<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019d0887-db78-7caa-9cb5-c520fd6b9e46,g:3c6ae74b-9a3f-47a4-bddd-e305aca1b2e7-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://mygreendot.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED" xlink:type="simple" xlink:href="gdot-20260331.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019d0887-dcfc-7b27-801d-1fd7f0496f6b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_StatementTable_019d0887-dcfc-7b27-801d-1fd7f0496f6b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019d0887-dcfc-7082-8874-00e19ae49994" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019d0887-dcfc-7b27-801d-1fd7f0496f6b" xlink:to="loc_srt_ProductOrServiceAxis_019d0887-dcfc-7082-8874-00e19ae49994" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019d0887-dcfc-7082-8874-00e19ae49994_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019d0887-dcfc-7082-8874-00e19ae49994" xlink:to="loc_srt_ProductsAndServicesDomain_019d0887-dcfc-7082-8874-00e19ae49994_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019d0887-dcfc-7239-9e74-8e06aa22be3c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019d0887-dcfc-7082-8874-00e19ae49994" xlink:to="loc_srt_ProductsAndServicesDomain_019d0887-dcfc-7239-9e74-8e06aa22be3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_CardRevenuesAndOtherFeesMember_019d0887-dcfc-750f-a5c3-c7a1f3a31040" xlink:href="gdot-20260331.xsd#gdot_CardRevenuesAndOtherFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019d0887-dcfc-7239-9e74-8e06aa22be3c" xlink:to="loc_gdot_CardRevenuesAndOtherFeesMember_019d0887-dcfc-750f-a5c3-c7a1f3a31040" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_ProcessingAndSettlementServiceMember_019d0887-dcfc-7699-99b6-16491af09381" xlink:href="gdot-20260331.xsd#gdot_ProcessingAndSettlementServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019d0887-dcfc-7239-9e74-8e06aa22be3c" xlink:to="loc_gdot_ProcessingAndSettlementServiceMember_019d0887-dcfc-7699-99b6-16491af09381" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_InterchangeRevenuesMember_019d0887-dcfc-74d6-af85-eea805bdd7c9" xlink:href="gdot-20260331.xsd#gdot_InterchangeRevenuesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019d0887-dcfc-7239-9e74-8e06aa22be3c" xlink:to="loc_gdot_InterchangeRevenuesMember_019d0887-dcfc-74d6-af85-eea805bdd7c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_019d0887-dcfc-72f6-b29f-8b3ee46c1aed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_RevenuesAbstract_019d0887-dcfc-72f6-b29f-8b3ee46c1aed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019d0887-dcfc-7827-8601-607dbda407aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019d0887-dcfc-72f6-b29f-8b3ee46c1aed" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019d0887-dcfc-7827-8601-607dbda407aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueNotFromContractWithCustomer_019d0887-dcfc-77ec-9fe9-252742d8326c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueNotFromContractWithCustomer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019d0887-dcfc-72f6-b29f-8b3ee46c1aed" xlink:to="loc_us-gaap_RevenueNotFromContractWithCustomer_019d0887-dcfc-77ec-9fe9-252742d8326c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019d0887-dcfc-73a1-8b1a-eeb71fbdc536" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019d0887-dcfc-72f6-b29f-8b3ee46c1aed" xlink:to="loc_us-gaap_Revenues_019d0887-dcfc-73a1-8b1a-eeb71fbdc536" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbc-717e-aeaf-aa72ae586f19" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbc-717e-aeaf-aa72ae586f19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_019d0887-ddbc-7277-b2f7-0bcd6ba37871" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbc-717e-aeaf-aa72ae586f19" xlink:to="loc_us-gaap_SellingAndMarketingExpense_019d0887-ddbc-7277-b2f7-0bcd6ba37871" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019d0887-ddbc-74e7-abd8-6f7aa1012b30" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbc-717e-aeaf-aa72ae586f19" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019d0887-ddbc-74e7-abd8-6f7aa1012b30" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommunicationsAndInformationTechnology_019d0887-ddbc-7845-ac9f-0fe80de892b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommunicationsAndInformationTechnology"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbc-717e-aeaf-aa72ae586f19" xlink:to="loc_us-gaap_CommunicationsAndInformationTechnology_019d0887-ddbc-7845-ac9f-0fe80de892b9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherGeneralAndAdministrativeExpense_019d0887-ddbc-7e7f-be31-bbc2840a025e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbc-717e-aeaf-aa72ae586f19" xlink:to="loc_us-gaap_OtherGeneralAndAdministrativeExpense_019d0887-ddbc-7e7f-be31-bbc2840a025e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019d0887-ddbc-733a-90cc-f182b4c2d056" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbc-717e-aeaf-aa72ae586f19" xlink:to="loc_us-gaap_RestructuringCharges_019d0887-ddbc-733a-90cc-f182b4c2d056" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019d0887-ddbc-7cf8-8d42-934e038da306" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbc-717e-aeaf-aa72ae586f19" xlink:to="loc_us-gaap_OperatingExpenses_019d0887-ddbc-7cf8-8d42-934e038da306" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019d0887-ddbc-7a1d-a5d8-776c724c67b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_OperatingIncomeLoss_019d0887-ddbc-7a1d-a5d8-776c724c67b9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019d0887-ddbc-7c1e-b868-14eb7b7f476b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019d0887-ddbc-7c1e-b868-14eb7b7f476b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019d0887-ddbc-7452-ab16-587e3120420d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019d0887-ddbc-7452-ab16-587e3120420d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019d0887-ddbc-75e6-beb3-c3eed00c6b71" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019d0887-ddbc-75e6-beb3-c3eed00c6b71" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019d0887-ddbc-700e-ae93-57a40b38fc34" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019d0887-ddbc-700e-ae93-57a40b38fc34" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019d0887-ddbc-7310-b8a1-9754560cf18e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_NetIncomeLoss_019d0887-ddbc-7310-b8a1-9754560cf18e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicUndistributed_019d0887-ddbc-7c3e-88d7-747c254b87cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasicUndistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_EarningsPerShareBasicUndistributed_019d0887-ddbc-7c3e-88d7-747c254b87cc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedUndistributed_019d0887-ddbc-7e12-8f82-092335e3b40c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDilutedUndistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_EarningsPerShareDilutedUndistributed_019d0887-ddbc-7e12-8f82-092335e3b40c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019d0887-ddbc-78f0-a621-f261d7c6f636" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019d0887-ddbc-78f0-a621-f261d7c6f636" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019d0887-ddbc-78f8-baee-60e8baa98dc2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-dcfc-7439-ada5-254f2a4f5289" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019d0887-ddbc-78f8-baee-60e8baa98dc2" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITED" xlink:type="simple" xlink:href="gdot-20260331.xsd#CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITED"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITED" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019d0887-ddbc-7f4f-b1de-615bf8c0fbf8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019d0887-ddbc-7b0f-8192-b28ae5b00bf0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019d0887-ddbc-7f4f-b1de-615bf8c0fbf8" xlink:to="loc_us-gaap_StatementTable_019d0887-ddbc-7b0f-8192-b28ae5b00bf0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019d0887-ddbc-72f3-b917-bcd4f1cff538" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019d0887-ddbc-7b0f-8192-b28ae5b00bf0" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019d0887-ddbc-72f3-b917-bcd4f1cff538" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019d0887-ddbc-72f3-b917-bcd4f1cff538_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019d0887-ddbc-72f3-b917-bcd4f1cff538" xlink:to="loc_us-gaap_EquityComponentDomain_019d0887-ddbc-72f3-b917-bcd4f1cff538_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019d0887-ddbc-750e-8601-732919c87602" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019d0887-ddbc-72f3-b917-bcd4f1cff538" xlink:to="loc_us-gaap_EquityComponentDomain_019d0887-ddbc-750e-8601-732919c87602" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019d0887-ddbc-79d1-8d28-129b51526d7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019d0887-ddbc-750e-8601-732919c87602" xlink:to="loc_us-gaap_CommonStockMember_019d0887-ddbc-79d1-8d28-129b51526d7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019d0887-ddbc-75c8-9fa1-a0e6d5fe0673" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019d0887-ddbc-750e-8601-732919c87602" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019d0887-ddbc-75c8-9fa1-a0e6d5fe0673" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019d0887-ddbc-7560-9b61-de4661760a0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019d0887-ddbc-750e-8601-732919c87602" xlink:to="loc_us-gaap_RetainedEarningsMember_019d0887-ddbc-7560-9b61-de4661760a0a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019d0887-ddbc-73dd-96c8-2ac4188f75a1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019d0887-ddbc-750e-8601-732919c87602" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019d0887-ddbc-73dd-96c8-2ac4188f75a1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019d0887-ddbc-7f4f-b1de-615bf8c0fbf8" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_019d0887-ddbc-7a9b-ab16-affe47dd88ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:to="loc_us-gaap_SharesOutstanding_019d0887-ddbc-7a9b-ab16-affe47dd88ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019d0887-ddbc-7907-98ac-9512da676a9e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:to="loc_us-gaap_StockholdersEquity_019d0887-ddbc-7907-98ac-9512da676a9e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019d0887-ddbc-7bef-9a9f-da6271c9d5c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019d0887-ddbc-7bef-9a9f-da6271c9d5c3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_019d0887-ddbc-71b8-86b9-abfb3e5d096c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_019d0887-ddbc-71b8-86b9-abfb3e5d096c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019d0887-ddbc-74a8-9a01-99489987db91" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019d0887-ddbc-74a8-9a01-99489987db91" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019d0887-ddbc-7099-a108-c047a3f6c503" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:to="loc_us-gaap_NetIncomeLoss_019d0887-ddbc-7099-a108-c047a3f6c503" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019d0887-ddbc-7e92-ae50-fe6f1ae41c02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019d0887-ddbc-7aa8-b388-34a3e40e128d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019d0887-ddbc-7e92-ae50-fe6f1ae41c02" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_019d0887-ddbc-75c3-88fb-a59c660acd19" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019d0887-ddbc-7fa0-bc2a-49a074c37e1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/OrganizationDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#OrganizationDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/OrganizationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_019d7677-3d05-7532-87c2-3cc04bc0cc95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019d7677-3d05-7106-a8cc-0e0ea540a7b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019d7677-3d05-7532-87c2-3cc04bc0cc95" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019d7677-3d05-7106-a8cc-0e0ea540a7b8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019d7677-3d05-7fbd-9c21-2343d2ec0360" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019d7677-3d05-7106-a8cc-0e0ea540a7b8" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019d7677-3d05-7fbd-9c21-2343d2ec0360" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019d7677-3d05-7fbd-9c21-2343d2ec0360_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019d7677-3d05-7fbd-9c21-2343d2ec0360" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019d7677-3d05-7fbd-9c21-2343d2ec0360_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019d7677-3d05-7f65-97af-8504d6bcfdff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019d7677-3d05-7fbd-9c21-2343d2ec0360" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019d7677-3d05-7f65-97af-8504d6bcfdff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_MergerAgreementMember_019d7677-3d05-71b4-822c-b4e2931f74a4" xlink:href="gdot-20260331.xsd#gdot_MergerAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019d7677-3d05-7f65-97af-8504d6bcfdff" xlink:to="loc_gdot_MergerAgreementMember_019d7677-3d05-71b4-822c-b4e2931f74a4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_GreenDotCorporationMember_019d7677-c637-7d33-abe2-d5adec3a3205" xlink:href="gdot-20260331.xsd#gdot_GreenDotCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019d7677-3d05-7f65-97af-8504d6bcfdff" xlink:to="loc_gdot_GreenDotCorporationMember_019d7677-c637-7d33-abe2-d5adec3a3205" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019d7677-c637-7912-8bed-e4bd41d74c59" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019d7677-3d05-7106-a8cc-0e0ea540a7b8" xlink:to="loc_dei_LegalEntityAxis_019d7677-c637-7912-8bed-e4bd41d74c59" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019d7677-c637-7912-8bed-e4bd41d74c59_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019d7677-c637-7912-8bed-e4bd41d74c59" xlink:to="loc_dei_EntityDomain_019d7677-c637-7912-8bed-e4bd41d74c59_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019d7677-c637-77ac-a622-5576dbe1880e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019d7677-c637-7912-8bed-e4bd41d74c59" xlink:to="loc_dei_EntityDomain_019d7677-c637-77ac-a622-5576dbe1880e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_PaymentsBuyerMember_019d7677-c637-7c43-aaf3-5bbd0f84d1ca" xlink:href="gdot-20260331.xsd#gdot_PaymentsBuyerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019d7677-c637-77ac-a622-5576dbe1880e" xlink:to="loc_gdot_PaymentsBuyerMember_019d7677-c637-7c43-aaf3-5bbd0f84d1ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_BusinessAcquisitionExchangeRatio_019d7677-3d05-7b08-ade5-a9b79ecdbf44" xlink:href="gdot-20260331.xsd#gdot_BusinessAcquisitionExchangeRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019d7677-3d05-7532-87c2-3cc04bc0cc95" xlink:to="loc_gdot_BusinessAcquisitionExchangeRatio_019d7677-3d05-7b08-ade5-a9b79ecdbf44" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_019d7677-8102-72ed-8244-225060816274" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019d7677-3d05-7532-87c2-3cc04bc0cc95" xlink:to="loc_us-gaap_BusinessAcquisitionSharePrice_019d7677-8102-72ed-8244-225060816274" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationPriceOfAcquisitionExpected_019d7677-c637-770d-bd1d-c72537233c6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationPriceOfAcquisitionExpected"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019d7677-3d05-7532-87c2-3cc04bc0cc95" xlink:to="loc_us-gaap_BusinessCombinationPriceOfAcquisitionExpected_019d7677-c637-770d-bd1d-c72537233c6f" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/RevenuesScheduleofDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#RevenuesScheduleofDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/RevenuesScheduleofDisaggregationofRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019d0887-ddbc-7825-8fb7-3894e1b7b10a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019d0887-ddbc-79f1-b1d8-27ecc20f562f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019d0887-ddbc-7825-8fb7-3894e1b7b10a" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019d0887-ddbc-79f1-b1d8-27ecc20f562f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019d0887-ddbc-7ec6-b74b-e3f9b66696fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019d0887-ddbc-79f1-b1d8-27ecc20f562f" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019d0887-ddbc-7ec6-b74b-e3f9b66696fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019d0887-ddbc-7ec6-b74b-e3f9b66696fd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019d0887-ddbc-7ec6-b74b-e3f9b66696fd" xlink:to="loc_us-gaap_SegmentDomain_019d0887-ddbc-7ec6-b74b-e3f9b66696fd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019d0887-ddbc-7999-8433-d388b01aae4d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019d0887-ddbc-7ec6-b74b-e3f9b66696fd" xlink:to="loc_us-gaap_SegmentDomain_019d0887-ddbc-7999-8433-d388b01aae4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_B2BServicesMember_019d0887-ddbc-7e60-afd8-05e9b1d0d550" xlink:href="gdot-20260331.xsd#gdot_B2BServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019d0887-ddbc-7999-8433-d388b01aae4d" xlink:to="loc_gdot_B2BServicesMember_019d0887-ddbc-7e60-afd8-05e9b1d0d550" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_ConsumerServicesMember_019d0887-ddbc-7ac2-bb2f-bf23a2b52a18" xlink:href="gdot-20260331.xsd#gdot_ConsumerServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019d0887-ddbc-7999-8433-d388b01aae4d" xlink:to="loc_gdot_ConsumerServicesMember_019d0887-ddbc-7ac2-bb2f-bf23a2b52a18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_MoneyMovementServicesMember_019d0887-ddbc-70c8-99f1-26efa7f3eba8" xlink:href="gdot-20260331.xsd#gdot_MoneyMovementServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019d0887-ddbc-7999-8433-d388b01aae4d" xlink:to="loc_gdot_MoneyMovementServicesMember_019d0887-ddbc-70c8-99f1-26efa7f3eba8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_019d0887-ddbc-7913-bbce-07a273566996" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TimingOfTransferOfGoodOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019d0887-ddbc-79f1-b1d8-27ecc20f562f" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_019d0887-ddbc-7913-bbce-07a273566996" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_019d0887-ddbc-7913-bbce-07a273566996_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_019d0887-ddbc-7913-bbce-07a273566996" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_019d0887-ddbc-7913-bbce-07a273566996_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_019d0887-ddbc-72bd-b1c0-978e59a9be5b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_019d0887-ddbc-7913-bbce-07a273566996" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_019d0887-ddbc-72bd-b1c0-978e59a9be5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferredAtPointInTimeMember_019d0887-ddbc-76cc-acdd-3fd8c69b7d39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransferredAtPointInTimeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_019d0887-ddbc-72bd-b1c0-978e59a9be5b" xlink:to="loc_us-gaap_TransferredAtPointInTimeMember_019d0887-ddbc-76cc-acdd-3fd8c69b7d39" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferredOverTimeMember_019d0887-ddbc-7173-8ddf-135a9924f7dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransferredOverTimeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_019d0887-ddbc-72bd-b1c0-978e59a9be5b" xlink:to="loc_us-gaap_TransferredOverTimeMember_019d0887-ddbc-7173-8ddf-135a9924f7dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019d0887-ddbc-7afc-aa69-b3026ad7c6c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019d0887-ddbc-7825-8fb7-3894e1b7b10a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019d0887-ddbc-7afc-aa69-b3026ad7c6c1" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/InvestmentSecuritiesScheduleofGrossGainsandLossesDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#InvestmentSecuritiesScheduleofGrossGainsandLossesDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/InvestmentSecuritiesScheduleofGrossGainsandLossesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-76e2-97d8-2ee4259b8a6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019d0887-ddbc-7ed8-bf31-c24a43166066" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-76e2-97d8-2ee4259b8a6e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019d0887-ddbc-7ed8-bf31-c24a43166066" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbc-7283-ac60-ef89ec85171d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019d0887-ddbc-7ed8-bf31-c24a43166066" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbc-7283-ac60-ef89ec85171d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-7283-ac60-ef89ec85171d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbc-7283-ac60-ef89ec85171d" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-7283-ac60-ef89ec85171d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-7a98-8624-bc5b11e98622" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbc-7283-ac60-ef89ec85171d" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-7a98-8624-bc5b11e98622" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_019d0887-ddbc-702e-b839-deb1a206dc75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-7a98-8624-bc5b11e98622" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_019d0887-ddbc-702e-b839-deb1a206dc75" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019d0887-ddbc-7458-9613-c3f092a86aa2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-7a98-8624-bc5b11e98622" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019d0887-ddbc-7458-9613-c3f092a86aa2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_019d0887-ddbc-7845-bc18-45d8d3ef940f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MunicipalBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-7a98-8624-bc5b11e98622" xlink:to="loc_us-gaap_MunicipalBondsMember_019d0887-ddbc-7845-bc18-45d8d3ef940f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_019d0887-ddbc-7b33-a60c-322b74c80b9a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-7a98-8624-bc5b11e98622" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_019d0887-ddbc-7b33-a60c-322b74c80b9a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_019d0887-ddbc-70a4-944e-ecfdd5dcf3d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-76e2-97d8-2ee4259b8a6e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_019d0887-ddbc-70a4-944e-ecfdd5dcf3d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019d0887-ddbc-7533-881e-b007f129e9c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-76e2-97d8-2ee4259b8a6e" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019d0887-ddbc-7533-881e-b007f129e9c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019d0887-ddbc-73fb-b161-9d65996447c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-76e2-97d8-2ee4259b8a6e" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019d0887-ddbc-73fb-b161-9d65996447c1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019d0887-ddbc-78bb-8521-6fae5dc5a068" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-76e2-97d8-2ee4259b8a6e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_019d0887-ddbc-78bb-8521-6fae5dc5a068" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/InvestmentSecuritiesScheduleofContinuousUnrealizedLossDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#InvestmentSecuritiesScheduleofContinuousUnrealizedLossDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/InvestmentSecuritiesScheduleofContinuousUnrealizedLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-7a74-9226-e05a5ff0c27f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019d0887-ddbc-7498-b5bf-0a372e53669e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-7a74-9226-e05a5ff0c27f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019d0887-ddbc-7498-b5bf-0a372e53669e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbc-752c-9df5-f6868808b5de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019d0887-ddbc-7498-b5bf-0a372e53669e" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbc-752c-9df5-f6868808b5de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-752c-9df5-f6868808b5de_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbc-752c-9df5-f6868808b5de" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-752c-9df5-f6868808b5de_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-74e8-8b17-d7f2fa3a2cf2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbc-752c-9df5-f6868808b5de" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-74e8-8b17-d7f2fa3a2cf2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_019d0887-ddbc-70c9-be52-d3f10926286b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-74e8-8b17-d7f2fa3a2cf2" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_019d0887-ddbc-70c9-be52-d3f10926286b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019d0887-ddbc-7fb5-b4de-c923c9651d14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-74e8-8b17-d7f2fa3a2cf2" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019d0887-ddbc-7fb5-b4de-c923c9651d14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_019d0887-ddbc-7571-8fc4-10a62cc2b733" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MunicipalBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-74e8-8b17-d7f2fa3a2cf2" xlink:to="loc_us-gaap_MunicipalBondsMember_019d0887-ddbc-7571-8fc4-10a62cc2b733" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_019d0887-ddbc-7a01-9176-1edc07ea6956" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbc-74e8-8b17-d7f2fa3a2cf2" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_019d0887-ddbc-7a01-9176-1edc07ea6956" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019d0887-ddbc-784b-be4c-1351a0ea33cb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-7a74-9226-e05a5ff0c27f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019d0887-ddbc-784b-be4c-1351a0ea33cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_019d0887-ddbc-7380-90aa-ce67d6d89285" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019d0887-ddbc-784b-be4c-1351a0ea33cb" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_019d0887-ddbc-7380-90aa-ce67d6d89285" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_019d0887-ddbc-7936-9557-15e5b1849f7f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019d0887-ddbc-784b-be4c-1351a0ea33cb" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_019d0887-ddbc-7936-9557-15e5b1849f7f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_019d0887-ddbc-7607-998b-a99ab0934c31" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_019d0887-ddbc-784b-be4c-1351a0ea33cb" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_019d0887-ddbc-7607-998b-a99ab0934c31" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract_019d0887-ddbc-7f67-ac2f-4e305c5cba30" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019d0887-ddbc-7a74-9226-e05a5ff0c27f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract_019d0887-ddbc-7f67-ac2f-4e305c5cba30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_019d0887-ddbc-7fd9-a057-6bfbd893d04e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract_019d0887-ddbc-7f67-ac2f-4e305c5cba30" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_019d0887-ddbc-7fd9-a057-6bfbd893d04e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_019d0887-ddbc-7307-913f-c470493a25a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract_019d0887-ddbc-7f67-ac2f-4e305c5cba30" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_019d0887-ddbc-7307-913f-c470493a25a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_019d0887-ddbc-7ab3-ba08-9fe75354e14a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract_019d0887-ddbc-7f67-ac2f-4e305c5cba30" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_019d0887-ddbc-7ab3-ba08-9fe75354e14a" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/AccountsReceivableScheduleofAccountsReceivableNetDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#AccountsReceivableScheduleofAccountsReceivableNetDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/AccountsReceivableScheduleofAccountsReceivableNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7c14-9add-b252549accdf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-7e46-94c4-92c171a3940a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7c14-9add-b252549accdf" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-7e46-94c4-92c171a3940a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019d0887-ddbc-7d5b-8c47-276c2dbe9d4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-7e46-94c4-92c171a3940a" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019d0887-ddbc-7d5b-8c47-276c2dbe9d4a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-7d5b-8c47-276c2dbe9d4a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019d0887-ddbc-7d5b-8c47-276c2dbe9d4a" xlink:to="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-7d5b-8c47-276c2dbe9d4a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-737e-b2eb-a7664ffdcf73" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019d0887-ddbc-7d5b-8c47-276c2dbe9d4a" xlink:to="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-737e-b2eb-a7664ffdcf73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_019d0887-ddbc-7590-961e-45f2fcf439bd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TradeAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-737e-b2eb-a7664ffdcf73" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_019d0887-ddbc-7590-961e-45f2fcf439bd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_OverdrawnCardholderBalancesFromPurchaseTransactionsMember_019d0887-ddbc-748d-b067-b05e382535e1" xlink:href="gdot-20260331.xsd#gdot_OverdrawnCardholderBalancesFromPurchaseTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-737e-b2eb-a7664ffdcf73" xlink:to="loc_gdot_OverdrawnCardholderBalancesFromPurchaseTransactionsMember_019d0887-ddbc-748d-b067-b05e382535e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_OverdrawnCardholderBalancesFromMaintenanceFeesMember_019d0887-ddbc-7f59-bf0b-01160de3b5c2" xlink:href="gdot-20260331.xsd#gdot_OverdrawnCardholderBalancesFromMaintenanceFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-737e-b2eb-a7664ffdcf73" xlink:to="loc_gdot_OverdrawnCardholderBalancesFromMaintenanceFeesMember_019d0887-ddbc-7f59-bf0b-01160de3b5c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_ReceivablesDueFromCardIssuingBanksMember_019d0887-ddbc-7ead-9a6e-2d66fbc64029" xlink:href="gdot-20260331.xsd#gdot_ReceivablesDueFromCardIssuingBanksMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-737e-b2eb-a7664ffdcf73" xlink:to="loc_gdot_ReceivablesDueFromCardIssuingBanksMember_019d0887-ddbc-7ead-9a6e-2d66fbc64029" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_FeeAdvancesMember_019d0887-ddbc-7abb-b0a6-4c03989e295b" xlink:href="gdot-20260331.xsd#gdot_FeeAdvancesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-737e-b2eb-a7664ffdcf73" xlink:to="loc_gdot_FeeAdvancesMember_019d0887-ddbc-7abb-b0a6-4c03989e295b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_OtherReceivablesMember_019d0887-ddbc-7811-8e0b-f353708c8fa1" xlink:href="gdot-20260331.xsd#gdot_OtherReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-737e-b2eb-a7664ffdcf73" xlink:to="loc_gdot_OtherReceivablesMember_019d0887-ddbc-7811-8e0b-f353708c8fa1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGross_019d0887-ddbc-74b7-a990-088bfb9569dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7c14-9add-b252549accdf" xlink:to="loc_us-gaap_AccountsReceivableGross_019d0887-ddbc-74b7-a990-088bfb9569dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_019d0887-ddbc-7f7f-b073-65efdb35d705" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7c14-9add-b252549accdf" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_019d0887-ddbc-7f7f-b073-65efdb35d705" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNet_019d0887-ddbc-7823-a430-b8b02bfa2639" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7c14-9add-b252549accdf" xlink:to="loc_us-gaap_AccountsReceivableNet_019d0887-ddbc-7823-a430-b8b02bfa2639" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/AccountsReceivableScheduleofReserveForUncollectibleOverdrawnAccountsDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#AccountsReceivableScheduleofReserveForUncollectibleOverdrawnAccountsDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/AccountsReceivableScheduleofReserveForUncollectibleOverdrawnAccountsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-794c-a0fd-db13a82cffcf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-74a7-8f67-80c70c0b8ead" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-794c-a0fd-db13a82cffcf" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-74a7-8f67-80c70c0b8ead" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019d0887-ddbc-7d20-83b9-5199422682ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-74a7-8f67-80c70c0b8ead" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019d0887-ddbc-7d20-83b9-5199422682ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-7d20-83b9-5199422682ce_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019d0887-ddbc-7d20-83b9-5199422682ce" xlink:to="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-7d20-83b9-5199422682ce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-7f3e-a095-85546cf459a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019d0887-ddbc-7d20-83b9-5199422682ce" xlink:to="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-7f3e-a095-85546cf459a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_OverdrawnCardholderBalancesFromPurchaseTransactionsMember_019d0887-ddbc-7e8d-98c1-4e93a6a68095" xlink:href="gdot-20260331.xsd#gdot_OverdrawnCardholderBalancesFromPurchaseTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019d0887-ddbc-7f3e-a095-85546cf459a2" xlink:to="loc_gdot_OverdrawnCardholderBalancesFromPurchaseTransactionsMember_019d0887-ddbc-7e8d-98c1-4e93a6a68095" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_019d0887-ddbc-7781-b786-b6d9eb1af362" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-794c-a0fd-db13a82cffcf" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_019d0887-ddbc-7781-b786-b6d9eb1af362" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_019d0887-ddbc-7cc0-9515-83b806ebb3f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_019d0887-ddbc-7781-b786-b6d9eb1af362" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_019d0887-ddbc-7cc0-9515-83b806ebb3f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_019d0887-ddbc-7669-886b-ebac085e5af2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_019d0887-ddbc-7781-b786-b6d9eb1af362" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_019d0887-ddbc-7669-886b-ebac085e5af2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_019d0887-ddbc-7914-85bd-032152825daa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_019d0887-ddbc-7781-b786-b6d9eb1af362" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_019d0887-ddbc-7914-85bd-032152825daa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_019d0887-ddbc-7600-a725-cdeda88fd17a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/LoanstoBankCustomersScheduleofLoanSummaryDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#LoanstoBankCustomersScheduleofLoanSummaryDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/LoanstoBankCustomersScheduleofLoanSummaryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7fd5-a4bb-b59b270564b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-7e79-b980-c0bba018f92d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7fd5-a4bb-b59b270564b5" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-7e79-b980-c0bba018f92d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7b07-848f-2bae6c475bdb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-7e79-b980-c0bba018f92d" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7b07-848f-2bae6c475bdb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b07-848f-2bae6c475bdb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7b07-848f-2bae6c475bdb" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b07-848f-2bae6c475bdb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-79eb-98fa-0fda6fce32e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7b07-848f-2bae6c475bdb" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-79eb-98fa-0fda6fce32e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_019d0887-ddbc-7748-95e1-8eeabaf0e257" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-79eb-98fa-0fda6fce32e9" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_019d0887-ddbc-7748-95e1-8eeabaf0e257" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_019d0887-ddbc-70c8-8627-3465493c8074" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-79eb-98fa-0fda6fce32e9" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_019d0887-ddbc-70c8-8627-3465493c8074" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_InstallmentMember_019d0887-ddbc-7436-9dd8-7dcefb0feac1" xlink:href="gdot-20260331.xsd#gdot_InstallmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-79eb-98fa-0fda6fce32e9" xlink:to="loc_gdot_InstallmentMember_019d0887-ddbc-7436-9dd8-7dcefb0feac1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_019d0887-ddbc-7a95-b44e-b6e7915fc583" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-79eb-98fa-0fda6fce32e9" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_019d0887-ddbc-7a95-b44e-b6e7915fc583" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditCardReceivablesMember_019d0887-ddbc-7cf3-8e22-608dae9634db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditCardReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-79eb-98fa-0fda6fce32e9" xlink:to="loc_us-gaap_CreditCardReceivablesMember_019d0887-ddbc-7cf3-8e22-608dae9634db" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_019d0887-ddbc-7047-b7e5-1d7ad5a7e212" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019d0887-ddbc-7e79-b980-c0bba018f92d" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_019d0887-ddbc-7047-b7e5-1d7ad5a7e212" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_019d0887-ddbc-7047-b7e5-1d7ad5a7e212_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_019d0887-ddbc-7047-b7e5-1d7ad5a7e212" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_019d0887-ddbc-7047-b7e5-1d7ad5a7e212_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_019d0887-ddbc-7105-b05d-537bab45e73c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_019d0887-ddbc-7047-b7e5-1d7ad5a7e212" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_019d0887-ddbc-7105-b05d-537bab45e73c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialAssetPastDueMember_019d0887-ddbc-7642-98fc-5451f18b7866" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialAssetPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_019d0887-ddbc-7105-b05d-537bab45e73c" xlink:to="loc_us-gaap_FinancialAssetPastDueMember_019d0887-ddbc-7642-98fc-5451f18b7866" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_019d0887-ddbc-72a2-9f1a-9e7a3e5fd72d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivables30To59DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialAssetPastDueMember_019d0887-ddbc-7642-98fc-5451f18b7866" xlink:to="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_019d0887-ddbc-72a2-9f1a-9e7a3e5fd72d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_019d0887-ddbc-7d0b-b03a-e7df4784b7e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivables60To89DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialAssetPastDueMember_019d0887-ddbc-7642-98fc-5451f18b7866" xlink:to="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_019d0887-ddbc-7d0b-b03a-e7df4784b7e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_019d0887-ddbc-7264-b55a-b61a679865ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialAssetPastDueMember_019d0887-ddbc-7642-98fc-5451f18b7866" xlink:to="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_019d0887-ddbc-7264-b55a-b61a679865ed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialAssetNotPastDueMember_019d0887-ddbc-7ebd-96e5-fb8caee0a687" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialAssetNotPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_019d0887-ddbc-7105-b05d-537bab45e73c" xlink:to="loc_us-gaap_FinancialAssetNotPastDueMember_019d0887-ddbc-7ebd-96e5-fb8caee0a687" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_019d0887-ddbc-76de-a7f2-fb7e41d01db4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7fd5-a4bb-b59b270564b5" xlink:to="loc_us-gaap_NotesReceivableGross_019d0887-ddbc-76de-a7f2-fb7e41d01db4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePercentPastDue1_019d0887-ddbc-7194-b757-2560016b17d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePercentPastDue1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7fd5-a4bb-b59b270564b5" xlink:to="loc_us-gaap_FinancingReceivablePercentPastDue1_019d0887-ddbc-7194-b757-2560016b17d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_FinancingReceivableRecordedInvestmentPercentCurrent_019d0887-ddbc-7ddf-aa05-648beb535f46" xlink:href="gdot-20260331.xsd#gdot_FinancingReceivableRecordedInvestmentPercentCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7fd5-a4bb-b59b270564b5" xlink:to="loc_gdot_FinancingReceivableRecordedInvestmentPercentCurrent_019d0887-ddbc-7ddf-aa05-648beb535f46" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_FinancingReceivableRecordedInvestmentPercent_019d0887-ddbc-75b4-898c-b2b3bd11721f" xlink:href="gdot-20260331.xsd#gdot_FinancingReceivableRecordedInvestmentPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019d0887-ddbc-7fd5-a4bb-b59b270564b5" xlink:to="loc_gdot_FinancingReceivableRecordedInvestmentPercent_019d0887-ddbc-75b4-898c-b2b3bd11721f" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/LoanstoBankCustomersScheduleofNonperformingLoansDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#LoanstoBankCustomersScheduleofNonperformingLoansDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/LoanstoBankCustomersScheduleofNonperformingLoansDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_019d0887-ddbc-7f1d-a15a-6f9efc6ced76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfImpairedFinancingReceivableTable_019d0887-ddbc-75f0-9ea7-f2005105faf0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfImpairedFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_019d0887-ddbc-7f1d-a15a-6f9efc6ced76" xlink:to="loc_us-gaap_ScheduleOfImpairedFinancingReceivableTable_019d0887-ddbc-75f0-9ea7-f2005105faf0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7192-b87f-a7a63746fe19" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfImpairedFinancingReceivableTable_019d0887-ddbc-75f0-9ea7-f2005105faf0" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7192-b87f-a7a63746fe19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7192-b87f-a7a63746fe19_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7192-b87f-a7a63746fe19" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7192-b87f-a7a63746fe19_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-773e-9ac5-43bf93ee10c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7192-b87f-a7a63746fe19" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-773e-9ac5-43bf93ee10c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_019d0887-ddbc-7ef3-ac0a-05397d1a5ab1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-773e-9ac5-43bf93ee10c1" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_019d0887-ddbc-7ef3-ac0a-05397d1a5ab1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditCardReceivablesMember_019d0887-ddbc-77cd-8cf7-d5874b439ea1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditCardReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-773e-9ac5-43bf93ee10c1" xlink:to="loc_us-gaap_CreditCardReceivablesMember_019d0887-ddbc-77cd-8cf7-d5874b439ea1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_019d0887-ddbc-7f4c-ab28-d75a645e89b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_019d0887-ddbc-7f1d-a15a-6f9efc6ced76" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_019d0887-ddbc-7f4c-ab28-d75a645e89b0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/LoanstoBankCustomersScheduleofCreditQualityIndicatorsDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#LoanstoBankCustomersScheduleofCreditQualityIndicatorsDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/LoanstoBankCustomersScheduleofCreditQualityIndicatorsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_019d0887-ddbc-7ab8-a00b-be98b2b87982" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_019d0887-ddbc-7efb-9127-18bcbdcbabbd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_019d0887-ddbc-7ab8-a00b-be98b2b87982" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_019d0887-ddbc-7efb-9127-18bcbdcbabbd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7752-9caf-2f57cbc17e28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_019d0887-ddbc-7efb-9127-18bcbdcbabbd" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7752-9caf-2f57cbc17e28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7752-9caf-2f57cbc17e28_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7752-9caf-2f57cbc17e28" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7752-9caf-2f57cbc17e28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b8d-a328-8e949062f762" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_019d0887-ddbc-7752-9caf-2f57cbc17e28" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b8d-a328-8e949062f762" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_019d0887-ddbc-750d-8213-2193fd339560" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b8d-a328-8e949062f762" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_019d0887-ddbc-750d-8213-2193fd339560" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_019d0887-ddbc-7ead-a69a-985c64979091" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b8d-a328-8e949062f762" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_019d0887-ddbc-7ead-a69a-985c64979091" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_InstallmentMember_019d0887-ddbc-7550-9c79-784e2a6fb7b9" xlink:href="gdot-20260331.xsd#gdot_InstallmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b8d-a328-8e949062f762" xlink:to="loc_gdot_InstallmentMember_019d0887-ddbc-7550-9c79-784e2a6fb7b9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_019d0887-ddbc-7505-8dc8-65f0a461a013" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConsumerPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b8d-a328-8e949062f762" xlink:to="loc_us-gaap_ConsumerPortfolioSegmentMember_019d0887-ddbc-7505-8dc8-65f0a461a013" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditCardReceivablesMember_019d0887-ddbc-7e73-89d7-b12db3da1234" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditCardReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_019d0887-ddbc-7b8d-a328-8e949062f762" xlink:to="loc_us-gaap_CreditCardReceivablesMember_019d0887-ddbc-7e73-89d7-b12db3da1234" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_019d0887-ddbc-7ddb-8f63-65291fc6936f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InternalCreditAssessmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_019d0887-ddbc-7efb-9127-18bcbdcbabbd" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis_019d0887-ddbc-7ddb-8f63-65291fc6936f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_019d0887-ddbc-7ddb-8f63-65291fc6936f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_019d0887-ddbc-7ddb-8f63-65291fc6936f" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_019d0887-ddbc-7ddb-8f63-65291fc6936f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_019d0887-ddbc-7727-8474-17299d45fd2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_019d0887-ddbc-7ddb-8f63-65291fc6936f" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_019d0887-ddbc-7727-8474-17299d45fd2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassMember_019d0887-ddbc-76af-9afc-83aaac7c812f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PassMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_019d0887-ddbc-7727-8474-17299d45fd2c" xlink:to="loc_us-gaap_PassMember_019d0887-ddbc-76af-9afc-83aaac7c812f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonperformingFinancingReceivableMember_019d0887-ddbc-773b-9939-478d857266b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonperformingFinancingReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_019d0887-ddbc-7727-8474-17299d45fd2c" xlink:to="loc_us-gaap_NonperformingFinancingReceivableMember_019d0887-ddbc-773b-9939-478d857266b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_019d0887-ddbc-7ba6-8368-a0c9522efd82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_019d0887-ddbc-7ab8-a00b-be98b2b87982" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_019d0887-ddbc-7ba6-8368-a0c9522efd82" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/EquityMethodInvestmentsNarrativeDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#EquityMethodInvestmentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/EquityMethodInvestmentsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019d0887-ddbc-735d-9740-27de4cd2683f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019d0887-ddbc-735d-9740-27de4cd2683f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_019d0887-ddbc-7230-8efa-7643f44dccc8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019d0887-ddbc-735d-9740-27de4cd2683f" xlink:to="loc_us-gaap_TypeOfArrangementAxis_019d0887-ddbc-7230-8efa-7643f44dccc8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019d0887-ddbc-7230-8efa-7643f44dccc8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_019d0887-ddbc-7230-8efa-7643f44dccc8" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019d0887-ddbc-7230-8efa-7643f44dccc8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019d0887-ddbc-7773-92aa-00093f030a7f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_019d0887-ddbc-7230-8efa-7643f44dccc8" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019d0887-ddbc-7773-92aa-00093f030a7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_WalmartProgramAgreementMember_019d0887-ddbc-75fd-8c50-4efb9af691dd" xlink:href="gdot-20260331.xsd#gdot_WalmartProgramAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_019d0887-ddbc-7773-92aa-00093f030a7f" xlink:to="loc_gdot_WalmartProgramAgreementMember_019d0887-ddbc-75fd-8c50-4efb9af691dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019d0887-ddbc-70ef-8b8f-731a6561ac56" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019d0887-ddbc-735d-9740-27de4cd2683f" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019d0887-ddbc-70ef-8b8f-731a6561ac56" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-70ef-8b8f-731a6561ac56_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019d0887-ddbc-70ef-8b8f-731a6561ac56" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-70ef-8b8f-731a6561ac56_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-7b29-a4d8-a48af0aba863" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019d0887-ddbc-70ef-8b8f-731a6561ac56" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-7b29-a4d8-a48af0aba863" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_TailFinLabsMember_019d0887-ddbc-78a3-8f1f-985d6be653b1" xlink:href="gdot-20260331.xsd#gdot_TailFinLabsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-7b29-a4d8-a48af0aba863" xlink:to="loc_gdot_TailFinLabsMember_019d0887-ddbc-78a3-8f1f-985d6be653b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_InvestmentHeldByBankMember_019d0887-ddbc-7c04-a971-a83b8e74b9bb" xlink:href="gdot-20260331.xsd#gdot_InvestmentHeldByBankMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-7b29-a4d8-a48af0aba863" xlink:to="loc_gdot_InvestmentHeldByBankMember_019d0887-ddbc-7c04-a971-a83b8e74b9bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019d0887-ddbc-77cd-b88a-61e8228783fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019d0887-ddbc-77cd-b88a-61e8228783fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_LimitedPartnersAnnualContributedCapitalAuthorizedAmount_019d0887-ddbc-7be8-aeda-b8c0dd6f4050" xlink:href="gdot-20260331.xsd#gdot_LimitedPartnersAnnualContributedCapitalAuthorizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_gdot_LimitedPartnersAnnualContributedCapitalAuthorizedAmount_019d0887-ddbc-7be8-aeda-b8c0dd6f4050" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_EquityMethodInvestmentPercentageOfInterestOfAnyNetProfits_019d0887-ddbc-7c4f-b4f3-3036d4968389" xlink:href="gdot-20260331.xsd#gdot_EquityMethodInvestmentPercentageOfInterestOfAnyNetProfits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_gdot_EquityMethodInvestmentPercentageOfInterestOfAnyNetProfits_019d0887-ddbc-7c4f-b4f3-3036d4968389" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_EquityMethodInvestmentPercentageOfInterestOfAnyNetLosses_019d0887-ddbc-7b5f-8c99-915e0c3cc2f5" xlink:href="gdot-20260331.xsd#gdot_EquityMethodInvestmentPercentageOfInterestOfAnyNetLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_gdot_EquityMethodInvestmentPercentageOfInterestOfAnyNetLosses_019d0887-ddbc-7b5f-8c99-915e0c3cc2f5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_019d0887-ddbc-7699-a51d-7c4c56ab513e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_us-gaap_EquityMethodInvestments_019d0887-ddbc-7699-a51d-7c4c56ab513e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019d0887-ddbc-702d-8051-a16c4b486727" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019d0887-ddbc-702d-8051-a16c4b486727" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_RenewalAgreementTerm_019d0887-ddbc-7176-901d-0d2c86140e45" xlink:href="gdot-20260331.xsd#gdot_RenewalAgreementTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_gdot_RenewalAgreementTerm_019d0887-ddbc-7176-901d-0d2c86140e45" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_LimitedPartnersNonRefundablePaymentForIncentiveFee_019d0887-ddbc-7796-8321-38ab8e942d80" xlink:href="gdot-20260331.xsd#gdot_LimitedPartnersNonRefundablePaymentForIncentiveFee"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7d62-befa-90b2ff9c6cb8" xlink:to="loc_gdot_LimitedPartnersNonRefundablePaymentForIncentiveFee_019d0887-ddbc-7796-8321-38ab8e942d80" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/EquityMethodInvestmentsScheduleofStatementsofOperationsDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#EquityMethodInvestmentsScheduleofStatementsofOperationsDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/EquityMethodInvestmentsScheduleofStatementsofOperationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7363-92e7-a43c98a1dfab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019d0887-ddbc-7914-b4c6-c45bcd97d41f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7363-92e7-a43c98a1dfab" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019d0887-ddbc-7914-b4c6-c45bcd97d41f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019d0887-ddbc-75f5-ad8d-c0796895bb4e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019d0887-ddbc-7914-b4c6-c45bcd97d41f" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019d0887-ddbc-75f5-ad8d-c0796895bb4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-75f5-ad8d-c0796895bb4e_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019d0887-ddbc-75f5-ad8d-c0796895bb4e" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-75f5-ad8d-c0796895bb4e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-7169-9a04-85cff23e3f71" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019d0887-ddbc-75f5-ad8d-c0796895bb4e" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-7169-9a04-85cff23e3f71" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_TailFinLabsMember_019d0887-ddbc-7018-ab87-349bf7efec96" xlink:href="gdot-20260331.xsd#gdot_TailFinLabsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019d0887-ddbc-7169-9a04-85cff23e3f71" xlink:to="loc_gdot_TailFinLabsMember_019d0887-ddbc-7018-ab87-349bf7efec96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019d0887-ddbc-7645-b615-dd75c58c4a67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7363-92e7-a43c98a1dfab" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019d0887-ddbc-7645-b615-dd75c58c4a67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_019d0887-ddbc-70a6-98c8-0bdc97fff857" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7363-92e7-a43c98a1dfab" xlink:to="loc_us-gaap_SellingAndMarketingExpense_019d0887-ddbc-70a6-98c8-0bdc97fff857" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019d0887-ddbc-71db-accb-995962172457" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7363-92e7-a43c98a1dfab" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019d0887-ddbc-71db-accb-995962172457" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019d0887-ddbc-75d1-bf2e-4fa759251068" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019d0887-ddbc-7363-92e7-a43c98a1dfab" xlink:to="loc_us-gaap_NetIncomeLoss_019d0887-ddbc-75d1-bf2e-4fa759251068" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/DebtNarrativeDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#DebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/DebtNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-7c68-8a49-59f104479cfb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-7c68-8a49-59f104479cfb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019d0887-ddbc-7334-891d-aca7eeb9de8c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-7c68-8a49-59f104479cfb" xlink:to="loc_us-gaap_DebtInstrumentAxis_019d0887-ddbc-7334-891d-aca7eeb9de8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7334-891d-aca7eeb9de8c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019d0887-ddbc-7334-891d-aca7eeb9de8c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7334-891d-aca7eeb9de8c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7fd7-9d8f-77607e334b83" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019d0887-ddbc-7334-891d-aca7eeb9de8c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7fd7-9d8f-77607e334b83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_FixedRateSeniorNotesDue2029Member_019d0887-ddbc-7599-981f-5e612ec0605c" xlink:href="gdot-20260331.xsd#gdot_FixedRateSeniorNotesDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7fd7-9d8f-77607e334b83" xlink:to="loc_gdot_FixedRateSeniorNotesDue2029Member_019d0887-ddbc-7599-981f-5e612ec0605c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_VariableRateSeniorNotesDue2026Member_019d0887-ddbc-72b9-b80d-4b3fcd0f6476" xlink:href="gdot-20260331.xsd#gdot_VariableRateSeniorNotesDue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7fd7-9d8f-77607e334b83" xlink:to="loc_gdot_VariableRateSeniorNotesDue2026Member_019d0887-ddbc-72b9-b80d-4b3fcd0f6476" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019d0887-ddbc-76c2-b9ae-7a7b19983f1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-7c68-8a49-59f104479cfb" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019d0887-ddbc-76c2-b9ae-7a7b19983f1b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-76c2-b9ae-7a7b19983f1b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019d0887-ddbc-76c2-b9ae-7a7b19983f1b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-76c2-b9ae-7a7b19983f1b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-7fd1-b036-9a4d5ea14040" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019d0887-ddbc-76c2-b9ae-7a7b19983f1b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-7fd1-b036-9a4d5ea14040" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019d0887-ddbc-702b-be5b-b8c84c97892a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-7fd1-b036-9a4d5ea14040" xlink:to="loc_us-gaap_SeniorNotesMember_019d0887-ddbc-702b-be5b-b8c84c97892a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019d0887-ddbc-7a74-81e3-f005d9db5ae6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-7fd1-b036-9a4d5ea14040" xlink:to="loc_us-gaap_LineOfCreditMember_019d0887-ddbc-7a74-81e3-f005d9db5ae6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesMember_019e0859-b212-787d-aaa0-24ba540f6709" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FederalHomeLoanBankAdvancesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-7fd1-b036-9a4d5ea14040" xlink:to="loc_us-gaap_FederalHomeLoanBankAdvancesMember_019e0859-b212-787d-aaa0-24ba540f6709" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_019d0887-ddbc-7244-ac6e-d4de5e53b362" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-7c68-8a49-59f104479cfb" xlink:to="loc_srt_StatementScenarioAxis_019d0887-ddbc-7244-ac6e-d4de5e53b362" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_019d0887-ddbc-7244-ac6e-d4de5e53b362_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_019d0887-ddbc-7244-ac6e-d4de5e53b362" xlink:to="loc_srt_ScenarioUnspecifiedDomain_019d0887-ddbc-7244-ac6e-d4de5e53b362_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_019d0887-ddbc-73c4-8226-0d967cb2bd82" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_019d0887-ddbc-7244-ac6e-d4de5e53b362" xlink:to="loc_srt_ScenarioUnspecifiedDomain_019d0887-ddbc-73c4-8226-0d967cb2bd82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_019d0887-ddbc-709b-b0d6-a8c5ff8880f1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_019d0887-ddbc-73c4-8226-0d967cb2bd82" xlink:to="loc_srt_ScenarioForecastMember_019d0887-ddbc-709b-b0d6-a8c5ff8880f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019d0887-ddbc-7b64-95b9-6e6bddb247df" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-7c68-8a49-59f104479cfb" xlink:to="loc_us-gaap_CreditFacilityAxis_019d0887-ddbc-7b64-95b9-6e6bddb247df" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019d0887-ddbc-7b64-95b9-6e6bddb247df_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019d0887-ddbc-7b64-95b9-6e6bddb247df" xlink:to="loc_us-gaap_CreditFacilityDomain_019d0887-ddbc-7b64-95b9-6e6bddb247df_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019d0887-ddbc-72d4-8caf-9c8ee495225e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019d0887-ddbc-7b64-95b9-6e6bddb247df" xlink:to="loc_us-gaap_CreditFacilityDomain_019d0887-ddbc-72d4-8caf-9c8ee495225e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019d0887-ddbc-7d76-a92f-454d94690950" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019d0887-ddbc-72d4-8caf-9c8ee495225e" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019d0887-ddbc-7d76-a92f-454d94690950" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019d0887-ddbc-7ca5-91d3-ba6cb7851817" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019d0887-ddbc-7ca5-91d3-ba6cb7851817" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_019d0887-ddbc-7462-aa08-8b910e02ee33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_DebtInstrumentTerm_019d0887-ddbc-7462-aa08-8b910e02ee33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019d0887-ddbc-70c3-bf29-04b3049ff690" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019d0887-ddbc-70c3-bf29-04b3049ff690" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_019d0887-ddbc-739b-ac7c-147bd48374d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_019d0887-ddbc-739b-ac7c-147bd48374d2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_019d0887-ddbc-797f-8797-32f6d05fd57d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_InterestExpenseDebt_019d0887-ddbc-797f-8797-32f6d05fd57d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvancesFromFederalHomeLoanBanks_019da97e-37c8-7ca6-927b-16fefa7b401e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdvancesFromFederalHomeLoanBanks"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_AdvancesFromFederalHomeLoanBanks_019da97e-37c8-7ca6-927b-16fefa7b401e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019d0887-ddbc-7db9-b52a-2381ab0a9522" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019d0887-ddbc-7db9-b52a-2381ab0a9522" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019d0887-ddbc-7fd6-b672-7a9dc939a6ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e01-85ba-38a7710749b1" xlink:to="loc_us-gaap_LineOfCredit_019d0887-ddbc-7fd6-b672-7a9dc939a6ad" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/DebtScheduleofDebtDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#DebtScheduleofDebtDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/DebtScheduleofDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e2a-bbad-24fcad85264a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-71a5-a234-cb1003aeba5a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e2a-bbad-24fcad85264a" xlink:to="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-71a5-a234-cb1003aeba5a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019d0887-ddbc-76d5-9bdc-624b6b2f5d1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-71a5-a234-cb1003aeba5a" xlink:to="loc_us-gaap_DebtInstrumentAxis_019d0887-ddbc-76d5-9bdc-624b6b2f5d1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-76d5-9bdc-624b6b2f5d1e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019d0887-ddbc-76d5-9bdc-624b6b2f5d1e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-76d5-9bdc-624b6b2f5d1e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7f74-9cb8-547242cdf718" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019d0887-ddbc-76d5-9bdc-624b6b2f5d1e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7f74-9cb8-547242cdf718" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_FixedRateSeniorNotesDue2029Member_019d0887-ddbc-707c-b93d-ffff1af8880d" xlink:href="gdot-20260331.xsd#gdot_FixedRateSeniorNotesDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019d0887-ddbc-7f74-9cb8-547242cdf718" xlink:to="loc_gdot_FixedRateSeniorNotesDue2029Member_019d0887-ddbc-707c-b93d-ffff1af8880d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019d0887-ddbc-7199-b16a-29b521f9c5b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d0887-ddbc-71a5-a234-cb1003aeba5a" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019d0887-ddbc-7199-b16a-29b521f9c5b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-7199-b16a-29b521f9c5b3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019d0887-ddbc-7199-b16a-29b521f9c5b3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-7199-b16a-29b521f9c5b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-72f6-ac51-7fa4542bbaf6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019d0887-ddbc-7199-b16a-29b521f9c5b3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-72f6-ac51-7fa4542bbaf6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019d0887-ddbc-7aa2-87e0-90dfd6a11cb7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019d0887-ddbc-72f6-ac51-7fa4542bbaf6" xlink:to="loc_us-gaap_SeniorNotesMember_019d0887-ddbc-7aa2-87e0-90dfd6a11cb7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019d0887-ddbc-7f94-9dd6-a80eb8274107" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e2a-bbad-24fcad85264a" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019d0887-ddbc-7f94-9dd6-a80eb8274107" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019d0887-ddbc-7afd-ad06-e46bb85a1bc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e2a-bbad-24fcad85264a" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019d0887-ddbc-7afd-ad06-e46bb85a1bc4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019d0887-ddbc-791f-8b47-61791484fc4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d0887-ddbc-7e2a-bbad-24fcad85264a" xlink:to="loc_us-gaap_LongTermDebt_019d0887-ddbc-791f-8b47-61791484fc4a" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/IncomeTaxesNarrativeDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#IncomeTaxesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/IncomeTaxesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLossCarryforwardsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_019d0887-ddbc-78eb-aa4e-8381437b56d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLossCarryforwardsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_019d0887-ddbc-78eb-aa4e-8381437b56d3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019d0887-ddbc-7e7d-9788-a6c690dd47f8" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_019d0887-ddbc-78eb-aa4e-8381437b56d3" xlink:to="loc_srt_RangeAxis_019d0887-ddbc-7e7d-9788-a6c690dd47f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019d0887-ddbc-7e7d-9788-a6c690dd47f8_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019d0887-ddbc-7e7d-9788-a6c690dd47f8" xlink:to="loc_srt_RangeMember_019d0887-ddbc-7e7d-9788-a6c690dd47f8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019d0887-ddbc-782a-99d6-1b41fe91105c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019d0887-ddbc-7e7d-9788-a6c690dd47f8" xlink:to="loc_srt_RangeMember_019d0887-ddbc-782a-99d6-1b41fe91105c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019d0887-ddbc-7a3d-82b1-8d909990c732" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019d0887-ddbc-782a-99d6-1b41fe91105c" xlink:to="loc_srt_MinimumMember_019d0887-ddbc-7a3d-82b1-8d909990c732" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019d0887-ddbc-7aab-bda9-22d9a5aa2317" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019d0887-ddbc-782a-99d6-1b41fe91105c" xlink:to="loc_srt_MaximumMember_019d0887-ddbc-7aab-bda9-22d9a5aa2317" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_019d0887-ddbc-7e14-ab37-21e71fdfd313" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_019d0887-ddbc-78eb-aa4e-8381437b56d3" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_019d0887-ddbc-7e14-ab37-21e71fdfd313" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019d0887-ddbc-7e14-ab37-21e71fdfd313_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019d0887-ddbc-7e14-ab37-21e71fdfd313" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019d0887-ddbc-7e14-ab37-21e71fdfd313_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019d0887-ddbc-7faa-91e0-2e52369330bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019d0887-ddbc-7e14-ab37-21e71fdfd313" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019d0887-ddbc-7faa-91e0-2e52369330bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_019d0887-ddbc-7e32-82f4-8c576400e43e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019d0887-ddbc-7faa-91e0-2e52369330bb" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_019d0887-ddbc-7e32-82f4-8c576400e43e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_019d0887-ddbc-7373-a189-1329abcf05fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DomesticCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019d0887-ddbc-7faa-91e0-2e52369330bb" xlink:to="loc_us-gaap_DomesticCountryMember_019d0887-ddbc-7373-a189-1329abcf05fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameAxis_019d0887-ddbc-729d-ac6b-dcfbf18c8b97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_019d0887-ddbc-78eb-aa4e-8381437b56d3" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameAxis_019d0887-ddbc-729d-ac6b-dcfbf18c8b97" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_019d0887-ddbc-729d-ac6b-dcfbf18c8b97_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_019d0887-ddbc-729d-ac6b-dcfbf18c8b97" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_019d0887-ddbc-729d-ac6b-dcfbf18c8b97_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_019d0887-ddbc-710e-8946-a2d2ad6d78e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_019d0887-ddbc-729d-ac6b-dcfbf18c8b97" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_019d0887-ddbc-710e-8946-a2d2ad6d78e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalRevenueServiceIRSMember_019d0887-ddbc-7a14-9819-4648448ca993" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InternalRevenueServiceIRSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_019d0887-ddbc-710e-8946-a2d2ad6d78e1" xlink:to="loc_us-gaap_InternalRevenueServiceIRSMember_019d0887-ddbc-7a14-9819-4648448ca993" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodAxis_019d0887-ddbc-774a-aab8-184de3075bba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_019d0887-ddbc-78eb-aa4e-8381437b56d3" xlink:to="loc_us-gaap_TaxPeriodAxis_019d0887-ddbc-774a-aab8-184de3075bba" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodDomain_019d0887-ddbc-774a-aab8-184de3075bba_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxPeriodAxis_019d0887-ddbc-774a-aab8-184de3075bba" xlink:to="loc_us-gaap_TaxPeriodDomain_019d0887-ddbc-774a-aab8-184de3075bba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodDomain_019d0887-ddbc-7ad6-8842-c5f2c28af51e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxPeriodAxis_019d0887-ddbc-774a-aab8-184de3075bba" xlink:to="loc_us-gaap_TaxPeriodDomain_019d0887-ddbc-7ad6-8842-c5f2c28af51e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_TaxYear20282045Member_019d0887-ddbc-748d-b4b1-b93190233688" xlink:href="gdot-20260331.xsd#gdot_TaxYear20282045Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxPeriodDomain_019d0887-ddbc-7ad6-8842-c5f2c28af51e" xlink:to="loc_gdot_TaxYear20282045Member_019d0887-ddbc-748d-b4b1-b93190233688" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_IndefinitelyMember_019d0887-ddbc-7891-ad7e-3386f78f44cf" xlink:href="gdot-20260331.xsd#gdot_IndefinitelyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxPeriodDomain_019d0887-ddbc-7ad6-8842-c5f2c28af51e" xlink:to="loc_gdot_IndefinitelyMember_019d0887-ddbc-7891-ad7e-3386f78f44cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_TaxYear20302034Member_019db089-e23c-72ee-bdc7-e33a58f0a489" xlink:href="gdot-20260331.xsd#gdot_TaxYear20302034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxPeriodDomain_019d0887-ddbc-7ad6-8842-c5f2c28af51e" xlink:to="loc_gdot_TaxYear20302034Member_019db089-e23c-72ee-bdc7-e33a58f0a489" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis_019d0887-ddbc-7439-88b9-8c5f3856f50d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxCreditCarryforwardAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_019d0887-ddbc-78eb-aa4e-8381437b56d3" xlink:to="loc_us-gaap_TaxCreditCarryforwardAxis_019d0887-ddbc-7439-88b9-8c5f3856f50d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_019d0887-ddbc-7439-88b9-8c5f3856f50d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_019d0887-ddbc-7439-88b9-8c5f3856f50d" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_019d0887-ddbc-7439-88b9-8c5f3856f50d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_019d0887-ddbc-7552-96a3-be1d50de68fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_019d0887-ddbc-7439-88b9-8c5f3856f50d" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_019d0887-ddbc-7552-96a3-be1d50de68fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalLossCarryforwardMember_019d0887-ddbc-773a-b5de-597db1bb46dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalLossCarryforwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_019d0887-ddbc-7552-96a3-be1d50de68fe" xlink:to="loc_us-gaap_CapitalLossCarryforwardMember_019d0887-ddbc-773a-b5de-597db1bb46dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralBusinessMember_019db088-c390-7dee-864f-78cb1005c143" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_019d0887-ddbc-7552-96a3-be1d50de68fe" xlink:to="loc_us-gaap_GeneralBusinessMember_019db088-c390-7dee-864f-78cb1005c143" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchMember_019dffd0-5eae-73db-8057-5061cc6da069" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_019d0887-ddbc-7552-96a3-be1d50de68fe" xlink:to="loc_us-gaap_ResearchMember_019dffd0-5eae-73db-8057-5061cc6da069" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_IncreaseDecreaseInStateAndLocalIncomeTaxes_019d0887-ddbc-7044-a6bc-3dcd5f1792f4" xlink:href="gdot-20260331.xsd#gdot_IncreaseDecreaseInStateAndLocalIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_gdot_IncreaseDecreaseInStateAndLocalIncomeTaxes_019d0887-ddbc-7044-a6bc-3dcd5f1792f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_IncreaseDecreaseInExcessTaxBenefitShareBasedBasedCompensationAndAdditionalExpenses_019d0887-ddbc-7481-8b5e-f4264138c121" xlink:href="gdot-20260331.xsd#gdot_IncreaseDecreaseInExcessTaxBenefitShareBasedBasedCompensationAndAdditionalExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_gdot_IncreaseDecreaseInExcessTaxBenefitShareBasedBasedCompensationAndAdditionalExpenses_019d0887-ddbc-7481-8b5e-f4264138c121" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_IncreaseDecreaseInBankOwnedLifeInsurancePoliciesAmounts_019e085e-5cc8-7590-96bb-7b06d76bffe6" xlink:href="gdot-20260331.xsd#gdot_IncreaseDecreaseInBankOwnedLifeInsurancePoliciesAmounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_gdot_IncreaseDecreaseInBankOwnedLifeInsurancePoliciesAmounts_019e085e-5cc8-7590-96bb-7b06d76bffe6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_IncreaseDecreaseInTaxCreditAmounts_019d0887-ddbc-735e-9bb0-3ee45a43dbab" xlink:href="gdot-20260331.xsd#gdot_IncreaseDecreaseInTaxCreditAmounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_gdot_IncreaseDecreaseInTaxCreditAmounts_019d0887-ddbc-735e-9bb0-3ee45a43dbab" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_IncreaseDecreaseInIRC162mLimitation_019d0887-ddbc-7491-9b64-4ff935b88702" xlink:href="gdot-20260331.xsd#gdot_IncreaseDecreaseInIRC162mLimitation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_gdot_IncreaseDecreaseInIRC162mLimitation_019d0887-ddbc-7491-9b64-4ff935b88702" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardValuationAllowance_019dffcf-e64b-7722-bd0f-9d978e5a2381" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxCreditCarryforwardValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_us-gaap_TaxCreditCarryforwardValuationAllowance_019dffcf-e64b-7722-bd0f-9d978e5a2381" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_019e085b-4f01-7336-8eaa-ccb76078b672" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_019e085b-4f01-7336-8eaa-ccb76078b672" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_IncomeTaxExaminationPeriod_019d0887-ddbc-7ee1-91f3-b2820ec90030" xlink:href="gdot-20260331.xsd#gdot_IncomeTaxExaminationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_gdot_IncomeTaxExaminationPeriod_019d0887-ddbc-7ee1-91f3-b2820ec90030" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_019d0887-ddbc-755f-ad7c-ffb0a713b967" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_us-gaap_OperatingLossCarryforwards_019d0887-ddbc-755f-ad7c-ffb0a713b967" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAmount_019d0887-ddbc-7d36-abcb-22b5e745d84e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxCreditCarryforwardAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_us-gaap_TaxCreditCarryforwardAmount_019d0887-ddbc-7d36-abcb-22b5e745d84e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_019d0887-ddbc-7adf-b0b0-344e29d56dd5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_019d0887-ddbc-7adf-b0b0-344e29d56dd5" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_019d0887-ddbc-76f1-ab40-48f943af77fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_019d0887-ddbc-7af9-a21d-aa20921eb4b1" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_019d0887-ddbc-76f1-ab40-48f943af77fe" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/StockholdersEquityDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#StockholdersEquityDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/StockholdersEquityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_019d0887-ddbc-7383-909e-daa2b30c2724" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_019d0887-ddbc-7e22-97ac-84aa8b7a50f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_019d0887-ddbc-7383-909e-daa2b30c2724" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_019d0887-ddbc-7e22-97ac-84aa8b7a50f2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019d0887-ddbc-7421-aae1-488f7828d492" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_019d0887-ddbc-7e22-97ac-84aa8b7a50f2" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019d0887-ddbc-7421-aae1-488f7828d492" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019d0887-ddbc-7421-aae1-488f7828d492_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019d0887-ddbc-7421-aae1-488f7828d492" xlink:to="loc_us-gaap_ClassOfStockDomain_019d0887-ddbc-7421-aae1-488f7828d492_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019d0887-ddbc-7257-b2b3-edcb691bd5d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019d0887-ddbc-7421-aae1-488f7828d492" xlink:to="loc_us-gaap_ClassOfStockDomain_019d0887-ddbc-7257-b2b3-edcb691bd5d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019d0887-ddbc-74ff-a062-1cf9b7831aca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019d0887-ddbc-7257-b2b3-edcb691bd5d8" xlink:to="loc_us-gaap_CommonClassAMember_019d0887-ddbc-74ff-a062-1cf9b7831aca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019d0887-ddbc-72a2-b05b-633bed0f56c0" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_019d0887-ddbc-7383-909e-daa2b30c2724" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019d0887-ddbc-72a2-b05b-633bed0f56c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019d0887-ddbc-7b08-9114-78631f6cc6ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_019d0887-ddbc-7383-909e-daa2b30c2724" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019d0887-ddbc-7b08-9114-78631f6cc6ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_019d0887-ddbc-7e71-a0d7-5917b1fa6c94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_019d0887-ddbc-7383-909e-daa2b30c2724" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_019d0887-ddbc-7e71-a0d7-5917b1fa6c94" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/StockBasedCompensationNarrativeDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#StockBasedCompensationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/StockBasedCompensationNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019d0887-ddbc-7bb3-8fb8-08cf42d02695" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019d0887-ddbc-7e27-b041-a2fea7b13dff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019d0887-ddbc-7bb3-8fb8-08cf42d02695" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019d0887-ddbc-7e27-b041-a2fea7b13dff" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_019d0887-ddbc-78ab-a93b-293f93eceb5e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019d0887-ddbc-7e27-b041-a2fea7b13dff" xlink:to="loc_us-gaap_PlanNameAxis_019d0887-ddbc-78ab-a93b-293f93eceb5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019d0887-ddbc-78ab-a93b-293f93eceb5e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_019d0887-ddbc-78ab-a93b-293f93eceb5e" xlink:to="loc_us-gaap_PlanNameDomain_019d0887-ddbc-78ab-a93b-293f93eceb5e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019d0887-ddbc-7ede-9418-99d2bb541632" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_019d0887-ddbc-78ab-a93b-293f93eceb5e" xlink:to="loc_us-gaap_PlanNameDomain_019d0887-ddbc-7ede-9418-99d2bb541632" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_A2010EquityIncentivePlanMember_019d0887-ddbc-7bcd-bfd5-e3a8708d5968" xlink:href="gdot-20260331.xsd#gdot_A2010EquityIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_019d0887-ddbc-7ede-9418-99d2bb541632" xlink:to="loc_gdot_A2010EquityIncentivePlanMember_019d0887-ddbc-7bcd-bfd5-e3a8708d5968" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019d0887-ddbc-771f-8a28-156deb60850b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019d0887-ddbc-7e27-b041-a2fea7b13dff" xlink:to="loc_srt_RangeAxis_019d0887-ddbc-771f-8a28-156deb60850b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019d0887-ddbc-771f-8a28-156deb60850b_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019d0887-ddbc-771f-8a28-156deb60850b" xlink:to="loc_srt_RangeMember_019d0887-ddbc-771f-8a28-156deb60850b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019d0887-ddbc-75b1-8bdd-2fcd038104c2" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019d0887-ddbc-771f-8a28-156deb60850b" xlink:to="loc_srt_RangeMember_019d0887-ddbc-75b1-8bdd-2fcd038104c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019d0887-ddbc-7f31-8c48-c8f69f1cd949" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019d0887-ddbc-75b1-8bdd-2fcd038104c2" xlink:to="loc_srt_MinimumMember_019d0887-ddbc-7f31-8c48-c8f69f1cd949" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019d0887-ddbc-7d9b-9334-e9b35d94427e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019d0887-ddbc-75b1-8bdd-2fcd038104c2" xlink:to="loc_srt_MaximumMember_019d0887-ddbc-7d9b-9334-e9b35d94427e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019d0887-ddbc-793f-a73c-9449bc043d3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019d0887-ddbc-7e27-b041-a2fea7b13dff" xlink:to="loc_us-gaap_AwardTypeAxis_019d0887-ddbc-793f-a73c-9449bc043d3a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-793f-a73c-9449bc043d3a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019d0887-ddbc-793f-a73c-9449bc043d3a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-793f-a73c-9449bc043d3a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7f95-b769-0654420f4d68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019d0887-ddbc-793f-a73c-9449bc043d3a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7f95-b769-0654420f4d68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_019d0887-ddbc-73d7-a0f7-0ef0bdb41b2d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7f95-b769-0654420f4d68" xlink:to="loc_us-gaap_PerformanceSharesMember_019d0887-ddbc-73d7-a0f7-0ef0bdb41b2d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_019d0887-ddbc-73b1-a99f-8add4d094f93" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019d0887-ddbc-7bb3-8fb8-08cf42d02695" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_019d0887-ddbc-73b1-a99f-8add4d094f93" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_SharebasedCompensationArrangementSharesIssuedTargetSharePercentage_019d0887-ddbc-7170-8102-72307a65792c" xlink:href="gdot-20260331.xsd#gdot_SharebasedCompensationArrangementSharesIssuedTargetSharePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019d0887-ddbc-7bb3-8fb8-08cf42d02695" xlink:to="loc_gdot_SharebasedCompensationArrangementSharesIssuedTargetSharePercentage_019d0887-ddbc-7170-8102-72307a65792c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/StockBasedCompensationScheduleofRestrictedStockandPerformanceStockUnitsDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#StockBasedCompensationScheduleofRestrictedStockandPerformanceStockUnitsDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/StockBasedCompensationScheduleofRestrictedStockandPerformanceStockUnitsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019d0887-ddbc-7448-a1a8-a72b9797a1b1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019d0887-ddbc-731e-b689-482f5d913588" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019d0887-ddbc-7448-a1a8-a72b9797a1b1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019d0887-ddbc-731e-b689-482f5d913588" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019d0887-ddbc-7acb-84d1-952f6292223a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019d0887-ddbc-731e-b689-482f5d913588" xlink:to="loc_us-gaap_AwardTypeAxis_019d0887-ddbc-7acb-84d1-952f6292223a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7acb-84d1-952f6292223a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019d0887-ddbc-7acb-84d1-952f6292223a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7acb-84d1-952f6292223a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7465-a1f3-cc93a06b80d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019d0887-ddbc-7acb-84d1-952f6292223a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7465-a1f3-cc93a06b80d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_019d0887-ddbc-7836-b5ac-bdc3ab8a18b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7465-a1f3-cc93a06b80d2" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_019d0887-ddbc-7836-b5ac-bdc3ab8a18b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_019d0887-ddbc-7a54-bcc2-b47d4c75c319" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbc-7465-a1f3-cc93a06b80d2" xlink:to="loc_us-gaap_PerformanceSharesMember_019d0887-ddbc-7a54-bcc2-b47d4c75c319" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019d0887-ddbc-7132-bbea-04e1a746800d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019d0887-ddbc-7448-a1a8-a72b9797a1b1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019d0887-ddbc-7132-bbea-04e1a746800d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_019d0887-ddbd-74ce-92a5-8d6742574c3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019d0887-ddbc-7132-bbea-04e1a746800d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_019d0887-ddbd-74ce-92a5-8d6742574c3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_019d0887-ddbd-7b7e-b3c8-164d1c888ab1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019d0887-ddbc-7132-bbea-04e1a746800d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_019d0887-ddbd-7b7e-b3c8-164d1c888ab1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_019d0887-ddbd-7709-b386-75cdf73d4c48" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019d0887-ddbc-7132-bbea-04e1a746800d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_019d0887-ddbd-7709-b386-75cdf73d4c48" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations_019d0887-ddbd-7041-9a09-8877e737fde8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019d0887-ddbc-7132-bbea-04e1a746800d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations_019d0887-ddbd-7041-9a09-8877e737fde8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_019d0887-ddbd-7a7b-a9e8-7b4f24648ccd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019d0887-ddbd-76ca-98af-9eca795b5d5a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019d0887-ddbc-7448-a1a8-a72b9797a1b1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019d0887-ddbd-76ca-98af-9eca795b5d5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_019d0887-ddbd-7fea-9bd2-4b17756db0e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019d0887-ddbd-76ca-98af-9eca795b5d5a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_019d0887-ddbd-7fea-9bd2-4b17756db0e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_019d0887-ddbd-7e24-aa51-28bb957ad630" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019d0887-ddbd-76ca-98af-9eca795b5d5a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_019d0887-ddbd-7e24-aa51-28bb957ad630" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_019d0887-ddbd-7367-abdb-e6e994d441b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019d0887-ddbd-76ca-98af-9eca795b5d5a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_019d0887-ddbd-7367-abdb-e6e994d441b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_019d0887-ddbd-70d9-b914-a73c20105528" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019d0887-ddbd-76ca-98af-9eca795b5d5a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_019d0887-ddbd-70d9-b914-a73c20105528" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_019d0887-ddbd-752a-8de8-77c024ddf2b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/EarningsperCommonShareScheduleofBasicandDilutedEarningsPerShareDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#EarningsperCommonShareScheduleofBasicandDilutedEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/EarningsperCommonShareScheduleofBasicandDilutedEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicLineItems_019d0887-ddbd-7d87-84f3-8a161cfeffdc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasicLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019d0887-ddbd-7a50-9915-db6c5e4c6e05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019d0887-ddbd-7d87-84f3-8a161cfeffdc" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019d0887-ddbd-7a50-9915-db6c5e4c6e05" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019d0887-ddbd-7707-8e4f-41e255d4968c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019d0887-ddbd-7a50-9915-db6c5e4c6e05" xlink:to="loc_us-gaap_AwardTypeAxis_019d0887-ddbd-7707-8e4f-41e255d4968c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbd-7707-8e4f-41e255d4968c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019d0887-ddbd-7707-8e4f-41e255d4968c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbd-7707-8e4f-41e255d4968c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbd-72c1-b8ca-ca2593524f31" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019d0887-ddbd-7707-8e4f-41e255d4968c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbd-72c1-b8ca-ca2593524f31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_019d0887-ddbd-7dcc-b891-7e070a15d4b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbd-72c1-b8ca-ca2593524f31" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_019d0887-ddbd-7dcc-b891-7e070a15d4b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_019d0887-ddbd-75d8-945f-2e29b5b06d79" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbd-72c1-b8ca-ca2593524f31" xlink:to="loc_us-gaap_PerformanceSharesMember_019d0887-ddbd-75d8-945f-2e29b5b06d79" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_019d0887-ddbd-789a-a3fb-864fa270e979" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019d0887-ddbd-72c1-b8ca-ca2593524f31" xlink:to="loc_us-gaap_EmployeeStockMember_019d0887-ddbd-789a-a3fb-864fa270e979" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_019d0887-ddbd-7643-9f14-4079a599d9cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019d0887-ddbd-7d87-84f3-8a161cfeffdc" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_019d0887-ddbd-7643-9f14-4079a599d9cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_019d0887-ddbd-71e4-8675-e91b07828548" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_019d0887-ddbd-7643-9f14-4079a599d9cf" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_019d0887-ddbd-71e4-8675-e91b07828548" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019d0887-ddbd-74f3-8920-7c815bae3d75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_019d0887-ddbd-71e4-8675-e91b07828548" xlink:to="loc_us-gaap_NetIncomeLoss_019d0887-ddbd-74f3-8920-7c815bae3d75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_019d0887-ddbd-7063-9ada-3bd5dae8c8bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_019d0887-ddbd-7643-9f14-4079a599d9cf" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_019d0887-ddbd-7063-9ada-3bd5dae8c8bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019d0887-ddbd-7845-a875-3257d4536ee2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_019d0887-ddbd-7063-9ada-3bd5dae8c8bb" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019d0887-ddbd-7845-a875-3257d4536ee2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicUndistributed_019d0887-ddbd-7aa0-af7c-2bd3be5364f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasicUndistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_019d0887-ddbd-7643-9f14-4079a599d9cf" xlink:to="loc_us-gaap_EarningsPerShareBasicUndistributed_019d0887-ddbd-7aa0-af7c-2bd3be5364f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_019d0887-ddbd-7925-a35a-84560b022dcd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019d0887-ddbd-7d87-84f3-8a161cfeffdc" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_019d0887-ddbd-7925-a35a-84560b022dcd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_019d0887-ddbd-7caa-b123-360f29e79964" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_019d0887-ddbd-7925-a35a-84560b022dcd" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_019d0887-ddbd-7caa-b123-360f29e79964" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_019d0887-ddbd-72c5-b180-f442ec553457" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_019d0887-ddbd-7caa-b123-360f29e79964" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_019d0887-ddbd-72c5-b180-f442ec553457" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019d0887-ddbd-778d-ae41-e0965c4f4d1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_019d0887-ddbd-7925-a35a-84560b022dcd" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019d0887-ddbd-778d-ae41-e0965c4f4d1b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019d0887-ddbd-780e-8e36-388821ff5064" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019d0887-ddbd-7241-ac38-065127a55cc2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019d0887-ddbd-778d-ae41-e0965c4f4d1b" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019d0887-ddbd-7241-ac38-065127a55cc2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019d0887-ddbd-7d10-b5cc-ca8056a2878e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_019d0887-ddbd-778d-ae41-e0965c4f4d1b" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019d0887-ddbd-7d10-b5cc-ca8056a2878e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedUndistributed_019d0887-ddbd-7ac1-bf9f-d959ffa5cd64" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDilutedUndistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_019d0887-ddbd-7925-a35a-84560b022dcd" xlink:to="loc_us-gaap_EarningsPerShareDilutedUndistributed_019d0887-ddbd-7ac1-bf9f-d959ffa5cd64" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/EarningsperCommonShareScheduleofAntidilutiveSharesDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#EarningsperCommonShareScheduleofAntidilutiveSharesDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/EarningsperCommonShareScheduleofAntidilutiveSharesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019d0887-ddbd-7de6-b483-e72e62125fdd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019d0887-ddbd-7ae5-9171-c460151d4c90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019d0887-ddbd-7de6-b483-e72e62125fdd" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019d0887-ddbd-7ae5-9171-c460151d4c90" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019d0887-ddbd-78c0-ba11-1340a6a18271" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019d0887-ddbd-7ae5-9171-c460151d4c90" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019d0887-ddbd-78c0-ba11-1340a6a18271" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019d0887-ddbd-78c0-ba11-1340a6a18271_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019d0887-ddbd-78c0-ba11-1340a6a18271" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019d0887-ddbd-78c0-ba11-1340a6a18271_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019d0887-ddbd-706b-9aee-4eedaf5f2868" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019d0887-ddbd-78c0-ba11-1340a6a18271" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019d0887-ddbd-706b-9aee-4eedaf5f2868" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_019d0887-ddbd-78bf-9b5c-e7ab4655cbdb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019d0887-ddbd-706b-9aee-4eedaf5f2868" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_019d0887-ddbd-78bf-9b5c-e7ab4655cbdb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_019d0887-ddbd-74e3-acb4-34276feb555a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019d0887-ddbd-706b-9aee-4eedaf5f2868" xlink:to="loc_us-gaap_PerformanceSharesMember_019d0887-ddbd-74e3-acb4-34276feb555a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_019d0887-ddbd-7af5-a5d7-d1bad9509e5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019d0887-ddbd-7de6-b483-e72e62125fdd" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_019d0887-ddbd-7af5-a5d7-d1bad9509e5d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/FairValueMeasurementsDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#FairValueMeasurementsDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/FairValueMeasurementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019d0887-ddbd-7947-a108-576a3af4783b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019d0887-ddbd-748b-abf2-136e8fb597b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019d0887-ddbd-7947-a108-576a3af4783b" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019d0887-ddbd-748b-abf2-136e8fb597b6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019d0887-ddbd-7fdb-af94-1df47242a82e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019d0887-ddbd-748b-abf2-136e8fb597b6" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019d0887-ddbd-7fdb-af94-1df47242a82e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019d0887-ddbd-7fdb-af94-1df47242a82e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019d0887-ddbd-7fdb-af94-1df47242a82e" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019d0887-ddbd-7fdb-af94-1df47242a82e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019d0887-ddbd-74fe-bd94-f99c72482a49" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019d0887-ddbd-7fdb-af94-1df47242a82e" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019d0887-ddbd-74fe-bd94-f99c72482a49" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_019d0887-ddbd-776f-b586-06ce5c0901d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_019d0887-ddbd-74fe-bd94-f99c72482a49" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_019d0887-ddbd-776f-b586-06ce5c0901d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019d0887-ddbd-76a7-b7e2-78abef239fde" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019d0887-ddbd-748b-abf2-136e8fb597b6" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019d0887-ddbd-76a7-b7e2-78abef239fde" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-76a7-b7e2-78abef239fde_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019d0887-ddbd-76a7-b7e2-78abef239fde" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-76a7-b7e2-78abef239fde_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-72fc-8f59-9fa170d8c206" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019d0887-ddbd-76a7-b7e2-78abef239fde" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-72fc-8f59-9fa170d8c206" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019d0887-ddbd-7884-9bb8-6c0b17b4acef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-72fc-8f59-9fa170d8c206" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019d0887-ddbd-7884-9bb8-6c0b17b4acef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019d0887-ddbd-7a3c-8f57-e33b926eb5b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-72fc-8f59-9fa170d8c206" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019d0887-ddbd-7a3c-8f57-e33b926eb5b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019d0887-ddbd-7193-8d60-5ec9c257e229" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-72fc-8f59-9fa170d8c206" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019d0887-ddbd-7193-8d60-5ec9c257e229" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbd-7cda-be7c-33e95a728b61" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019d0887-ddbd-748b-abf2-136e8fb597b6" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbd-7cda-be7c-33e95a728b61" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbd-7cda-be7c-33e95a728b61_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbd-7cda-be7c-33e95a728b61" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbd-7cda-be7c-33e95a728b61_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbd-719e-af37-3aaaff3ea42d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019d0887-ddbd-7cda-be7c-33e95a728b61" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbd-719e-af37-3aaaff3ea42d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_019d0887-ddbd-7db1-973a-6d9065bcc30a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbd-719e-af37-3aaaff3ea42d" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_019d0887-ddbd-7db1-973a-6d9065bcc30a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019d0887-ddbd-73b0-ae6f-b78e74da7383" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbd-719e-af37-3aaaff3ea42d" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_019d0887-ddbd-73b0-ae6f-b78e74da7383" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_019d0887-ddbd-751d-b08a-93b87521924a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MunicipalBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbd-719e-af37-3aaaff3ea42d" xlink:to="loc_us-gaap_MunicipalBondsMember_019d0887-ddbd-751d-b08a-93b87521924a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_019d0887-ddbd-78df-afc4-73d15d519c33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019d0887-ddbd-719e-af37-3aaaff3ea42d" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_019d0887-ddbd-78df-afc4-73d15d519c33" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_019d0887-ddbd-77da-8edd-f645b912ab97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019d0887-ddbd-7947-a108-576a3af4783b" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_019d0887-ddbd-77da-8edd-f645b912ab97" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_019d0887-ddbd-70fe-b465-97ca85fceaff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_019d0887-ddbd-77da-8edd-f645b912ab97" xlink:to="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_019d0887-ddbd-70fe-b465-97ca85fceaff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019d0887-ddbd-76c3-8dc3-531082b2703d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_019d0887-ddbd-70fe-b465-97ca85fceaff" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019d0887-ddbd-76c3-8dc3-531082b2703d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019d0887-ddbd-72e6-b7d9-2e2954cbfff3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_019d0887-ddbd-70fe-b465-97ca85fceaff" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019d0887-ddbd-72e6-b7d9-2e2954cbfff3" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/FairValueofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#FairValueofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/FairValueofFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019d0887-ddbd-7596-ba17-d595ee667f6c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019d0887-ddbd-7e87-bf79-a673a0a90563" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019d0887-ddbd-7596-ba17-d595ee667f6c" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019d0887-ddbd-7e87-bf79-a673a0a90563" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019d0887-ddbd-768b-b747-9f3a52fa371a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019d0887-ddbd-7e87-bf79-a673a0a90563" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019d0887-ddbd-768b-b747-9f3a52fa371a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-768b-b747-9f3a52fa371a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019d0887-ddbd-768b-b747-9f3a52fa371a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-768b-b747-9f3a52fa371a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-7ba4-9a5a-ce30facf48f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019d0887-ddbd-768b-b747-9f3a52fa371a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-7ba4-9a5a-ce30facf48f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019d0887-ddbd-7846-bae7-ee7d1b6114f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-7ba4-9a5a-ce30facf48f7" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019d0887-ddbd-7846-bae7-ee7d1b6114f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019d0887-ddbd-7649-ad04-140fbf3d0ac6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019d0887-ddbd-7ba4-9a5a-ce30facf48f7" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019d0887-ddbd-7649-ad04-140fbf3d0ac6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019d0887-ddbd-7c6d-b224-ca66e6dcb93a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019d0887-ddbd-7e87-bf79-a673a0a90563" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019d0887-ddbd-7c6d-b224-ca66e6dcb93a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019d0887-ddbd-7c6d-b224-ca66e6dcb93a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019d0887-ddbd-7c6d-b224-ca66e6dcb93a" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019d0887-ddbd-7c6d-b224-ca66e6dcb93a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019d0887-ddbd-743a-a5f0-0497fe4bdf02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019d0887-ddbd-7c6d-b224-ca66e6dcb93a" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019d0887-ddbd-743a-a5f0-0497fe4bdf02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019d0887-ddbd-7950-9962-456e267cc3ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019d0887-ddbd-743a-a5f0-0497fe4bdf02" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019d0887-ddbd-7950-9962-456e267cc3ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019d0887-ddbd-7f41-9d37-f844b2d0b2ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019d0887-ddbd-7950-9962-456e267cc3ad" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019d0887-ddbd-7f41-9d37-f844b2d0b2ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019d0887-ddbd-7ec3-8696-e5e31da195a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019d0887-ddbd-7950-9962-456e267cc3ad" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019d0887-ddbd-7ec3-8696-e5e31da195a5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019d0887-ddbd-7f7e-a21d-62dc8fb7e9de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019d0887-ddbd-7596-ba17-d595ee667f6c" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019d0887-ddbd-7f7e-a21d-62dc8fb7e9de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableFairValueDisclosure_019d0887-ddbd-7244-a152-a45398a76ee8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LoansReceivableFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019d0887-ddbd-7f7e-a21d-62dc8fb7e9de" xlink:to="loc_us-gaap_LoansReceivableFairValueDisclosure_019d0887-ddbd-7244-a152-a45398a76ee8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019d0887-ddbd-7b2d-b9c5-d266199a08f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019d0887-ddbd-7596-ba17-d595ee667f6c" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019d0887-ddbd-7b2d-b9c5-d266199a08f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsFairValueDisclosure_019d0887-ddbd-7dfa-a2f4-3c3e26156058" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepositsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019d0887-ddbd-7b2d-b9c5-d266199a08f4" xlink:to="loc_us-gaap_DepositsFairValueDisclosure_019d0887-ddbd-7dfa-a2f4-3c3e26156058" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/LeasesNarrativeDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#LeasesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/LeasesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_019d0887-ddbd-79e7-b855-f380b214e0cb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_019d0887-ddbd-77d1-ba22-b6379657f03f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019d0887-ddbd-79e7-b855-f380b214e0cb" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_019d0887-ddbd-77d1-ba22-b6379657f03f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019d0887-ddbd-7a7b-8c2d-76e12628a917" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_019d0887-ddbd-77d1-ba22-b6379657f03f" xlink:to="loc_srt_RangeAxis_019d0887-ddbd-7a7b-8c2d-76e12628a917" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019d0887-ddbd-7a7b-8c2d-76e12628a917_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019d0887-ddbd-7a7b-8c2d-76e12628a917" xlink:to="loc_srt_RangeMember_019d0887-ddbd-7a7b-8c2d-76e12628a917_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019d0887-ddbd-7271-91b5-b5b7f236a0e2" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019d0887-ddbd-7a7b-8c2d-76e12628a917" xlink:to="loc_srt_RangeMember_019d0887-ddbd-7271-91b5-b5b7f236a0e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019d0887-ddbd-7505-8265-8d467a064fda" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019d0887-ddbd-7271-91b5-b5b7f236a0e2" xlink:to="loc_srt_MinimumMember_019d0887-ddbd-7505-8265-8d467a064fda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019d0887-ddbd-7e1b-9717-8488158081b9" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019d0887-ddbd-7271-91b5-b5b7f236a0e2" xlink:to="loc_srt_MaximumMember_019d0887-ddbd-7e1b-9717-8488158081b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_019d0887-ddbd-79fc-91e3-b7d6880e714e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019d0887-ddbd-79e7-b855-f380b214e0cb" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_019d0887-ddbd-79fc-91e3-b7d6880e714e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_019d0887-ddbd-7ab8-883c-801cddb4a2ef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019d0887-ddbd-79e7-b855-f380b214e0cb" xlink:to="loc_us-gaap_OperatingLeaseExpense_019d0887-ddbd-7ab8-883c-801cddb4a2ef" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/SignificantConcentrationDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#SignificantConcentrationDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/SignificantConcentrationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_019d0887-ddbd-7beb-8038-510d300ea812" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_019d0887-ddbd-7e70-9774-79fc324d9d75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_019d0887-ddbd-7beb-8038-510d300ea812" xlink:to="loc_us-gaap_ConcentrationRiskTable_019d0887-ddbd-7e70-9774-79fc324d9d75" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_019d0887-ddbd-7a88-86e5-a428b183f5b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_019d0887-ddbd-7e70-9774-79fc324d9d75" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_019d0887-ddbd-7a88-86e5-a428b183f5b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_019d0887-ddbd-7a88-86e5-a428b183f5b8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_019d0887-ddbd-7a88-86e5-a428b183f5b8" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_019d0887-ddbd-7a88-86e5-a428b183f5b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_019d0887-ddbd-7afb-bdcd-71039f9f1dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_019d0887-ddbd-7a88-86e5-a428b183f5b8" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_019d0887-ddbd-7afb-bdcd-71039f9f1dd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_PartnerConcentrationRiskMember_019d0887-ddbd-7c9f-9b3b-8df1413b6fee" xlink:href="gdot-20260331.xsd#gdot_PartnerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_019d0887-ddbd-7afb-bdcd-71039f9f1dd4" xlink:to="loc_gdot_PartnerConcentrationRiskMember_019d0887-ddbd-7c9f-9b3b-8df1413b6fee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019d0887-ddbd-72d7-b0eb-9716086035fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_019d0887-ddbd-7e70-9774-79fc324d9d75" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019d0887-ddbd-72d7-b0eb-9716086035fb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019d0887-ddbd-72d7-b0eb-9716086035fb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019d0887-ddbd-72d7-b0eb-9716086035fb" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019d0887-ddbd-72d7-b0eb-9716086035fb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019d0887-ddbd-7a8e-8597-d9096dddd4b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019d0887-ddbd-72d7-b0eb-9716086035fb" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019d0887-ddbd-7a8e-8597-d9096dddd4b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_019d0887-ddbd-7df8-8694-564721afb5ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019d0887-ddbd-7a8e-8597-d9096dddd4b5" xlink:to="loc_us-gaap_SalesRevenueNetMember_019d0887-ddbd-7df8-8694-564721afb5ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_019d0887-ddbd-78fe-80c4-a5eafa800c99" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_019d0887-ddbd-7e70-9774-79fc324d9d75" xlink:to="loc_srt_CounterpartyNameAxis_019d0887-ddbd-78fe-80c4-a5eafa800c99" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019d0887-ddbd-78fe-80c4-a5eafa800c99_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_019d0887-ddbd-78fe-80c4-a5eafa800c99" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019d0887-ddbd-78fe-80c4-a5eafa800c99_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019d0887-ddbd-763a-9f13-f30318dd5277" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_019d0887-ddbd-78fe-80c4-a5eafa800c99" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019d0887-ddbd-763a-9f13-f30318dd5277" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_SingleBaaSPartnerMember_019d0887-ddbd-7321-a0be-9ae418481d3b" xlink:href="gdot-20260331.xsd#gdot_SingleBaaSPartnerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019d0887-ddbd-763a-9f13-f30318dd5277" xlink:to="loc_gdot_SingleBaaSPartnerMember_019d0887-ddbd-7321-a0be-9ae418481d3b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_019d0887-ddbd-78bc-976f-0f1ad1e1820a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_019d0887-ddbd-7beb-8038-510d300ea812" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_019d0887-ddbd-78bc-976f-0f1ad1e1820a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/SegmentInformationScheduleofReportableSegmentsDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#SegmentInformationScheduleofReportableSegmentsDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/SegmentInformationScheduleofReportableSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-724b-b2a1-7cab83c544c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019d0887-ddbd-7d29-9bec-a34ed243d711" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-724b-b2a1-7cab83c544c2" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019d0887-ddbd-7d29-9bec-a34ed243d711" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019d0887-ddbd-79c2-a022-e45de3552818" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019d0887-ddbd-7d29-9bec-a34ed243d711" xlink:to="loc_srt_ConsolidationItemsAxis_019d0887-ddbd-79c2-a022-e45de3552818" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-79c2-a022-e45de3552818_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019d0887-ddbd-79c2-a022-e45de3552818" xlink:to="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-79c2-a022-e45de3552818_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-7406-be23-bddf1c55c868" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019d0887-ddbd-79c2-a022-e45de3552818" xlink:to="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-7406-be23-bddf1c55c868" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019d0887-ddbd-7bea-90b3-73201a189a44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-7406-be23-bddf1c55c868" xlink:to="loc_us-gaap_OperatingSegmentsMember_019d0887-ddbd-7bea-90b3-73201a189a44" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019d0887-ddbd-7dc5-b525-cdfd1d98d4fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019d0887-ddbd-7d29-9bec-a34ed243d711" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019d0887-ddbd-7dc5-b525-cdfd1d98d4fb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019d0887-ddbd-7dc5-b525-cdfd1d98d4fb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019d0887-ddbd-7dc5-b525-cdfd1d98d4fb" xlink:to="loc_us-gaap_SegmentDomain_019d0887-ddbd-7dc5-b525-cdfd1d98d4fb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019d0887-ddbd-76b9-9d47-8d2e7864dd28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019d0887-ddbd-7dc5-b525-cdfd1d98d4fb" xlink:to="loc_us-gaap_SegmentDomain_019d0887-ddbd-76b9-9d47-8d2e7864dd28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_B2BServicesMember_019d0887-ddbd-7274-86f5-787a1a01c031" xlink:href="gdot-20260331.xsd#gdot_B2BServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019d0887-ddbd-76b9-9d47-8d2e7864dd28" xlink:to="loc_gdot_B2BServicesMember_019d0887-ddbd-7274-86f5-787a1a01c031" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_ConsumerServicesMember_019d0887-ddbd-797f-86f7-41c37c81fe0e" xlink:href="gdot-20260331.xsd#gdot_ConsumerServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019d0887-ddbd-76b9-9d47-8d2e7864dd28" xlink:to="loc_gdot_ConsumerServicesMember_019d0887-ddbd-797f-86f7-41c37c81fe0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_MoneyMovementServicesMember_019d0887-ddbd-703e-9379-f17b39090bd5" xlink:href="gdot-20260331.xsd#gdot_MoneyMovementServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019d0887-ddbd-76b9-9d47-8d2e7864dd28" xlink:to="loc_gdot_MoneyMovementServicesMember_019d0887-ddbd-703e-9379-f17b39090bd5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateAndOtherMember_019d0887-ddbd-780f-85d6-397e8c007710" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019d0887-ddbd-76b9-9d47-8d2e7864dd28" xlink:to="loc_us-gaap_CorporateAndOtherMember_019d0887-ddbd-780f-85d6-397e8c007710" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019d0887-ddbd-7a21-807e-c8ce69f1a7a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-724b-b2a1-7cab83c544c2" xlink:to="loc_us-gaap_Revenues_019d0887-ddbd-7a21-807e-c8ce69f1a7a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-724b-b2a1-7cab83c544c2" xlink:to="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_019d0887-ddbd-757a-b9ee-eff85e7a69cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:to="loc_us-gaap_SellingAndMarketingExpense_019d0887-ddbd-757a-b9ee-eff85e7a69cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommunicationsAndInformationTechnology_019d0887-ddbd-71af-9986-0bffa1f970ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommunicationsAndInformationTechnology"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:to="loc_us-gaap_CommunicationsAndInformationTechnology_019d0887-ddbd-71af-9986-0bffa1f970ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_TransactionLossesAndFraudManagement_019d0887-ddbd-7f94-8af5-27b1b52a6d4c" xlink:href="gdot-20260331.xsd#gdot_TransactionLossesAndFraudManagement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:to="loc_gdot_TransactionLossesAndFraudManagement_019d0887-ddbd-7f94-8af5-27b1b52a6d4c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfessionalAndContractServicesExpense_019d0887-ddbd-766a-ae5e-9e1c3eef2f1f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfessionalAndContractServicesExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:to="loc_us-gaap_ProfessionalAndContractServicesExpense_019d0887-ddbd-766a-ae5e-9e1c3eef2f1f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019d0887-ddbd-7c7e-b73a-1e67a322a5e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019d0887-ddbd-7c7e-b73a-1e67a322a5e1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_019d0887-ddbd-7a07-894d-2bc144f0cfab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_019d0887-ddbd-7a07-894d-2bc144f0cfab" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019d0887-ddbd-7c73-96b2-1b324bfe0035" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019d0887-ddbd-7797-a6c7-cd2f62502caf" xlink:to="loc_us-gaap_CostsAndExpenses_019d0887-ddbd-7c73-96b2-1b324bfe0035" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_gdot_SegmentProfitLoss_019d0887-ddbd-74ac-93e5-3ca2c6a8287f" xlink:href="gdot-20260331.xsd#gdot_SegmentProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-724b-b2a1-7cab83c544c2" xlink:to="loc_gdot_SegmentProfitLoss_019d0887-ddbd-74ac-93e5-3ca2c6a8287f" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://mygreendot.com/role/SegmentInformationScheduleofReconciliationsofSegmentProfittoIncomeDetails" xlink:type="simple" xlink:href="gdot-20260331.xsd#SegmentInformationScheduleofReconciliationsofSegmentProfittoIncomeDetails"/>
  <link:definitionLink xlink:role="http://mygreendot.com/role/SegmentInformationScheduleofReconciliationsofSegmentProfittoIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-7e8f-a8b2-d408d02a5e47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019d0887-ddbd-793d-b5c4-22bbf53a7b32" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-7e8f-a8b2-d408d02a5e47" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019d0887-ddbd-793d-b5c4-22bbf53a7b32" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019d0887-ddbd-75dc-a30d-b216d194b452" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019d0887-ddbd-793d-b5c4-22bbf53a7b32" xlink:to="loc_srt_ConsolidationItemsAxis_019d0887-ddbd-75dc-a30d-b216d194b452" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-75dc-a30d-b216d194b452_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019d0887-ddbd-75dc-a30d-b216d194b452" xlink:to="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-75dc-a30d-b216d194b452_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-77b8-9b6a-1609c03fab22" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019d0887-ddbd-75dc-a30d-b216d194b452" xlink:to="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-77b8-9b6a-1609c03fab22" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019d0887-ddbd-72a6-b2fc-55c1a9cb78c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-77b8-9b6a-1609c03fab22" xlink:to="loc_us-gaap_OperatingSegmentsMember_019d0887-ddbd-72a6-b2fc-55c1a9cb78c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_019d0887-ddbd-7c22-8e45-7dff3f2e1b6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MaterialReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019d0887-ddbd-77b8-9b6a-1609c03fab22" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_019d0887-ddbd-7c22-8e45-7dff3f2e1b6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019d0887-ddbd-7e3f-864b-144d754d5512" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-7e8f-a8b2-d408d02a5e47" xlink:to="loc_us-gaap_Revenues_019d0887-ddbd-7e3f-864b-144d754d5512" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_019d0887-ddbd-7257-b251-b4e40ef36a13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-7e8f-a8b2-d408d02a5e47" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_019d0887-ddbd-7257-b251-b4e40ef36a13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019d0887-ddbd-7ec3-b881-916a4d054139" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-7e8f-a8b2-d408d02a5e47" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019d0887-ddbd-7ec3-b881-916a4d054139" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019d0887-ddbd-7e8f-a8b2-d408d02a5e47" xlink:to="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019d0887-ddbd-70bc-9cf3-6067c674a001" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019d0887-ddbd-70bc-9cf3-6067c674a001" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_019d0887-de77-7b29-934d-a1b3bc7fb963" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_019d0887-de77-7b29-934d-a1b3bc7fb963" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019d0887-de77-7d3e-86ef-956538d86d8b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019d0887-de77-7d3e-86ef-956538d86d8b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_019d0887-de77-7aa9-ba7c-084725687e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_AssetImpairmentCharges_019d0887-de77-7aa9-ba7c-084725687e5c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationSettlementExpense_019d0887-de77-76f0-b131-a3e5bbb084e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LitigationSettlementExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_LitigationSettlementExpense_019d0887-de77-76f0-b131-a3e5bbb084e2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019d0887-de77-7841-9450-e4ba33bb27e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_RestructuringCharges_019d0887-de77-7841-9450-e4ba33bb27e8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019dcd56-20f4-7450-babf-e688c0e387aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019dcd56-20f4-7450-babf-e688c0e387aa" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_019d0887-de77-7b2b-b5c6-b46ad5d943e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_019d0887-de77-7b2b-b5c6-b46ad5d943e3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019d0887-de77-7fbb-9f70-6fbd31a9fab2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_OperatingIncomeLoss_019d0887-de77-7fbb-9f70-6fbd31a9fab2" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019d0887-de77-79f9-b8cf-4ad60741d382" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019d0887-de77-79f9-b8cf-4ad60741d382" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019d0887-de77-7e80-a497-482128f62080" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_019d0887-ddbd-7dcb-901b-21a0d94162ca" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019d0887-de77-7e80-a497-482128f62080" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_019d0887-de77-75d1-bd82-d3819f3495ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
  </link:definitionLink>
</link:linkbase>
