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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e42d5-00ea-793c-b91a-e5da585f656b,g:3a31f0cd-9524-4537-9e8b-e71bb1de1a16-->
<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" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://www.hillsbank.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="hbia-20260630.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e42d5-0744-7f9e-a7b8-dbd1055dcd8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e42d5-0744-7f9e-a7b8-dbd1055dcd8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e42d5-0744-785f-bb9f-b8b70c8aaaca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e42d5-0744-785f-bb9f-b8b70c8aaaca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankStock_019e42d5-0744-7480-97ff-176a3d229162" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalHomeLoanBankStock"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_FederalHomeLoanBankStock_019e42d5-0744-7480-97ff-176a3d229162" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_FinancingReceivableHeldForSale_019e42d5-0744-799e-ab46-d2093d31d623" xlink:href="hbia-20260630.xsd#hbia_FinancingReceivableHeldForSale"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_hbia_FinancingReceivableHeldForSale_019e42d5-0744-799e-ab46-d2093d31d623" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_019e42d5-0744-7f15-ade7-8a2e29d8484f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_NotesReceivableNet_019e42d5-0744-7f15-ade7-8a2e29d8484f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019e42d5-0744-7ee1-8e17-53dfe3fd0066" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019e42d5-0744-7ee1-8e17-53dfe3fd0066" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_TaxCreditRealEstate_019e42d5-0744-7ca4-92b4-4060ef86dfe1" xlink:href="hbia-20260630.xsd#hbia_TaxCreditRealEstate"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_hbia_TaxCreditRealEstate_019e42d5-0744-7ca4-92b4-4060ef86dfe1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestReceivable_019e42d5-0744-708c-80d8-e0b5f3da31df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestReceivable"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_InterestReceivable_019e42d5-0744-708c-80d8-e0b5f3da31df" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_019e42d5-0744-7370-a3c8-0b4003050894" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_019e42d5-0744-7370-a3c8-0b4003050894" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019e42d5-0744-7ea4-bde0-0d5d3fffd7d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_Goodwill_019e42d5-0744-7ea4-bde0-0d5d3fffd7d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_019e42d5-0744-7056-9152-a608c8d2a7e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssets"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e42d5-0744-74f4-8459-3ecd094698a5" xlink:to="loc_us-gaap_OtherAssets_019e42d5-0744-7056-9152-a608c8d2a7e9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e42d5-0824-7955-a5b2-8a8706d67573" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_TotalStockholdersEquity_019e42d5-0824-71ac-885e-b32f66fe43bc" xlink:href="hbia-20260630.xsd#hbia_TotalStockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e42d5-0824-7955-a5b2-8a8706d67573" xlink:to="loc_hbia_TotalStockholdersEquity_019e42d5-0824-71ac-885e-b32f66fe43bc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnearnedESOPShares_019e42d5-0824-7af0-b9e0-d86bc0eee3cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnearnedESOPShares"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e42d5-0824-7955-a5b2-8a8706d67573" xlink:to="loc_us-gaap_UnearnedESOPShares_019e42d5-0824-7af0-b9e0-d86bc0eee3cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e42d5-0744-7f83-b8a4-0096eccd2ab4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e42d5-0744-744d-8f76-45ba511e30bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e42d5-0744-7f83-b8a4-0096eccd2ab4" xlink:to="loc_us-gaap_Liabilities_019e42d5-0744-744d-8f76-45ba511e30bc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_TemporaryEquityRedeemableStockHeldByEmployeeStockOwnershipPlanESOP_019e42d5-0744-75e8-bdda-4540f3c6e563" xlink:href="hbia-20260630.xsd#hbia_TemporaryEquityRedeemableStockHeldByEmployeeStockOwnershipPlanESOP"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e42d5-0744-7f83-b8a4-0096eccd2ab4" xlink:to="loc_hbia_TemporaryEquityRedeemableStockHeldByEmployeeStockOwnershipPlanESOP_019e42d5-0744-75e8-bdda-4540f3c6e563" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e42d5-0744-7b8e-b8e5-4e3c96364245" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e42d5-0744-7f83-b8a4-0096eccd2ab4" xlink:to="loc_us-gaap_StockholdersEquity_019e42d5-0744-7b8e-b8e5-4e3c96364245" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_TotalStockholdersEquity_019e42d5-0744-70b2-a60e-58823b0ba4ed" xlink:href="hbia-20260630.xsd#hbia_TotalStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValueOutstanding_019e42d5-0744-734d-b2c8-3326a3ab0a9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValueOutstanding"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_hbia_TotalStockholdersEquity_019e42d5-0744-70b2-a60e-58823b0ba4ed" xlink:to="loc_us-gaap_CommonStockValueOutstanding_019e42d5-0744-734d-b2c8-3326a3ab0a9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019e42d5-0744-7ef1-bdc7-4ecb43334de0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_hbia_TotalStockholdersEquity_019e42d5-0744-70b2-a60e-58823b0ba4ed" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019e42d5-0744-7ef1-bdc7-4ecb43334de0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e42d5-0744-7de4-b457-6ad18200c168" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_hbia_TotalStockholdersEquity_019e42d5-0744-70b2-a60e-58823b0ba4ed" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e42d5-0744-7de4-b457-6ad18200c168" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e42d5-0744-7c41-a309-522abdc00d94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_hbia_TotalStockholdersEquity_019e42d5-0744-70b2-a60e-58823b0ba4ed" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e42d5-0744-7c41-a309-522abdc00d94" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_019e42d5-0744-735c-a86b-b7f1f051751d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValue"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_hbia_TotalStockholdersEquity_019e42d5-0744-70b2-a60e-58823b0ba4ed" xlink:to="loc_us-gaap_TreasuryStockValue_019e42d5-0744-735c-a86b-b7f1f051751d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Deposits_019e42d5-0744-721e-b686-2be41eab8336" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Deposits"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestBearingDepositLiabilities_019e42d5-0744-7b35-be3c-95c482f874b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestBearingDepositLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits_019e42d5-0744-721e-b686-2be41eab8336" xlink:to="loc_us-gaap_NoninterestBearingDepositLiabilities_019e42d5-0744-7b35-be3c-95c482f874b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestBearingDepositLiabilities_019e42d5-0744-7d04-8b26-ae5aa98fd3c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestBearingDepositLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits_019e42d5-0744-721e-b686-2be41eab8336" xlink:to="loc_us-gaap_InterestBearingDepositLiabilities_019e42d5-0744-7d04-8b26-ae5aa98fd3c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e42d5-0744-7bcd-94b5-10f63c4e579d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Deposits_019e42d5-0744-7798-852d-e804a0c17172" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Deposits"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e42d5-0744-7bcd-94b5-10f63c4e579d" xlink:to="loc_us-gaap_Deposits_019e42d5-0744-7798-852d-e804a0c17172" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_ShortTermDebtAndFederalFundsPurchased_019e42d5-0744-740d-a2b9-d9c261d02cb8" xlink:href="hbia-20260630.xsd#hbia_ShortTermDebtAndFederalFundsPurchased"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e42d5-0744-7bcd-94b5-10f63c4e579d" xlink:to="loc_hbia_ShortTermDebtAndFederalFundsPurchased_019e42d5-0744-740d-a2b9-d9c261d02cb8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesLongTerm_019e42d5-0744-76f1-818e-d40e7e7ed020" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalHomeLoanBankAdvancesLongTerm"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e42d5-0744-7bcd-94b5-10f63c4e579d" xlink:to="loc_us-gaap_FederalHomeLoanBankAdvancesLongTerm_019e42d5-0744-76f1-818e-d40e7e7ed020" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019e42d5-0744-712b-8976-9513dde6941c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e42d5-0744-7bcd-94b5-10f63c4e579d" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019e42d5-0744-712b-8976-9513dde6941c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OffBalanceSheetCreditLossLiability_019e42d5-0744-7dbf-8955-7540a7a30353" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OffBalanceSheetCreditLossLiability"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e42d5-0744-7bcd-94b5-10f63c4e579d" xlink:to="loc_us-gaap_OffBalanceSheetCreditLossLiability_019e42d5-0744-7dbf-8955-7540a7a30353" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilities_019e42d5-0744-7805-924a-f30cd06c0c90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilities"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e42d5-0744-7bcd-94b5-10f63c4e579d" xlink:to="loc_us-gaap_OtherLiabilities_019e42d5-0744-7805-924a-f30cd06c0c90" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/CONSOLIDATEDSTATEMENTSOFINCOMEUnaudited" xlink:type="simple" xlink:href="hbia-20260630.xsd#CONSOLIDATEDSTATEMENTSOFINCOMEUnaudited"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/CONSOLIDATEDSTATEMENTSOFINCOMEUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_019e42d5-0824-7781-87ff-1bfbc4f6825a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOperating_019e42d5-0824-7c8c-844e-afbc335a57e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeOperating"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_019e42d5-0824-7781-87ff-1bfbc4f6825a" xlink:to="loc_us-gaap_InterestIncomeOperating_019e42d5-0824-7c8c-844e-afbc335a57e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOperating_019e42d5-0824-7fc3-a3fe-6d47b7b3944d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseOperating"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_019e42d5-0824-7781-87ff-1bfbc4f6825a" xlink:to="loc_us-gaap_InterestExpenseOperating_019e42d5-0824-7fc3-a3fe-6d47b7b3944d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e42d5-0824-70ee-be40-a3df6999e32e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e42d5-0824-7d50-937f-984904700dca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e42d5-0824-70ee-be40-a3df6999e32e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e42d5-0824-7d50-937f-984904700dca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e42d5-0824-726c-95f2-b4e4d9156cdc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e42d5-0824-70ee-be40-a3df6999e32e" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e42d5-0824-726c-95f2-b4e4d9156cdc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_019e42d5-0824-7ff7-af03-b52f723929dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_019e42d5-0824-7a23-9d5a-93430e50de36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_019e42d5-0824-7ff7-af03-b52f723929dd" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_019e42d5-0824-7a23-9d5a-93430e50de36" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_019e42d5-0824-791e-94a0-faa8327ae7dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForLoanLossesExpensed"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_019e42d5-0824-7ff7-af03-b52f723929dd" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_019e42d5-0824-791e-94a0-faa8327ae7dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncome_019e42d5-0824-74dc-8f84-6c977e6d5694" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfLoansNet_019e42d5-0824-71f4-bd9d-dfe21b3b807b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSalesOfLoansNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_019e42d5-0824-74dc-8f84-6c977e6d5694" xlink:to="loc_us-gaap_GainLossOnSalesOfLoansNet_019e42d5-0824-71f4-bd9d-dfe21b3b807b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e42d5-0824-7745-ba20-04ea2d1943b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_019e42d5-0824-74dc-8f84-6c977e6d5694" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e42d5-0824-7745-ba20-04ea2d1943b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncomeOther_019e42d5-0824-7ca7-aa48-31a254efa88a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestIncomeOther"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_019e42d5-0824-74dc-8f84-6c977e6d5694" xlink:to="loc_us-gaap_NoninterestIncomeOther_019e42d5-0824-7ca7-aa48-31a254efa88a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_019e42d5-0824-7c60-a02e-4b9f06db45b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_019e42d5-0824-74dc-8f84-6c977e6d5694" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_019e42d5-0824-7c60-a02e-4b9f06db45b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019e42d5-0824-74e9-8bde-1561bda3158e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019e42d5-0824-74e9-8bde-1561bda3158e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_Occupancy_019e42d5-0824-7cfe-ae00-9cb70b807541" xlink:href="hbia-20260630.xsd#hbia_Occupancy"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:to="loc_hbia_Occupancy_019e42d5-0824-7cfe-ae00-9cb70b807541" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentExpense_019e42d5-0824-7b4c-94d2-02635cff884e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquipmentExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:to="loc_us-gaap_EquipmentExpense_019e42d5-0824-7b4c-94d2-02635cff884e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SuppliesAndPostageExpense_019e42d5-0824-7e3e-9798-f6ea8fc1833b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SuppliesAndPostageExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:to="loc_us-gaap_SuppliesAndPostageExpense_019e42d5-0824-7e3e-9798-f6ea8fc1833b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_AdvertisingAndBusinessDevelopment_019e42d5-0824-71b3-b91a-02cdfd8e3549" xlink:href="hbia-20260630.xsd#hbia_AdvertisingAndBusinessDevelopment"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:to="loc_hbia_AdvertisingAndBusinessDevelopment_019e42d5-0824-71b3-b91a-02cdfd8e3549" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_OutsideServices_019e42d5-0824-723e-badb-224717da4aa8" xlink:href="hbia-20260630.xsd#hbia_OutsideServices"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:to="loc_hbia_OutsideServices_019e42d5-0824-723e-badb-224717da4aa8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalDepositInsuranceCorporationPremiumExpense_019e42d5-0824-708e-b1e2-59593d1dfc01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalDepositInsuranceCorporationPremiumExpense"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:to="loc_us-gaap_FederalDepositInsuranceCorporationPremiumExpense_019e42d5-0824-708e-b1e2-59593d1dfc01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoninterestExpense_019e42d5-0824-703e-85f2-5b3175948d51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNoninterestExpense"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_019e42d5-0824-71f1-ade7-00c6e26d8628" xlink:to="loc_us-gaap_OtherNoninterestExpense_019e42d5-0824-703e-85f2-5b3175948d51" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOperating_019e42d5-0824-7509-90c8-adc0ebce6b9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseOperating"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOtherShortTermBorrowings_019e42d5-0824-7753-a7da-d2706f99f5da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseOtherShortTermBorrowings"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseOperating_019e42d5-0824-7509-90c8-adc0ebce6b9b" xlink:to="loc_us-gaap_InterestExpenseOtherShortTermBorrowings_019e42d5-0824-7753-a7da-d2706f99f5da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm_019e42d5-0824-7123-a32d-0ab45ca80212" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseOperating_019e42d5-0824-7509-90c8-adc0ebce6b9b" xlink:to="loc_us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm_019e42d5-0824-7123-a32d-0ab45ca80212" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDeposits_019e42d5-0824-729e-8f85-dc91592e99da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDeposits"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseOperating_019e42d5-0824-7509-90c8-adc0ebce6b9b" xlink:to="loc_us-gaap_InterestExpenseDeposits_019e42d5-0824-729e-8f85-dc91592e99da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOperating_019e42d5-0824-7a11-bf9a-8541113cda6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeOperating"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeFederalFundsSold_019e42d5-0824-7692-85fe-5b712b3f4702" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeFederalFundsSold"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeOperating_019e42d5-0824-7a11-bf9a-8541113cda6c" xlink:to="loc_us-gaap_InterestIncomeFederalFundsSold_019e42d5-0824-7692-85fe-5b712b3f4702" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeSecuritiesTaxExempt_019e42d5-0824-7f8b-a7cd-e285a16ec46f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeSecuritiesTaxExempt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeOperating_019e42d5-0824-7a11-bf9a-8541113cda6c" xlink:to="loc_us-gaap_InterestIncomeSecuritiesTaxExempt_019e42d5-0824-7f8b-a7cd-e285a16ec46f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeSecuritiesTaxable_019e42d5-0824-7242-9f15-d1233445717c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeSecuritiesTaxable"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeOperating_019e42d5-0824-7a11-bf9a-8541113cda6c" xlink:to="loc_us-gaap_InterestIncomeSecuritiesTaxable_019e42d5-0824-7242-9f15-d1233445717c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_019e42d5-0824-74b3-b58c-894f420f9583" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeOperating_019e42d5-0824-7a11-bf9a-8541113cda6c" xlink:to="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_019e42d5-0824-74b3-b58c-894f420f9583" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e42d5-0824-7631-838c-454063bb36e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_019e42d5-0824-7479-a545-b2c1ed6a9fce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e42d5-0824-7631-838c-454063bb36e1" xlink:to="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_019e42d5-0824-7479-a545-b2c1ed6a9fce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpense_019e42d5-0824-7b0a-934f-2fa9b7b3c546" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e42d5-0824-7631-838c-454063bb36e1" xlink:to="loc_us-gaap_NoninterestExpense_019e42d5-0824-7b0a-934f-2fa9b7b3c546" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncome_019e42d5-0824-7c8f-9496-3855c01041fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestIncome"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e42d5-0824-7631-838c-454063bb36e1" xlink:to="loc_us-gaap_NoninterestIncome_019e42d5-0824-7c8f-9496-3855c01041fb" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnaudited" xlink:type="simple" xlink:href="hbia-20260630.xsd#CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnaudited"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_019e42d5-0824-7326-976d-649acf2a1a6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_019e42d5-0824-7f54-85ee-e831c22b699a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_019e42d5-0824-7326-976d-649acf2a1a6c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_019e42d5-0824-7f54-85ee-e831c22b699a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_019e42d5-0824-7e1c-b899-a0bb8ab0c036" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_019e42d5-0824-7326-976d-649acf2a1a6c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_019e42d5-0824-7e1c-b899-a0bb8ab0c036" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_019e42d5-0824-7fde-83ca-8395d8e25866" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_019e42d5-0824-7326-976d-649acf2a1a6c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_019e42d5-0824-7fde-83ca-8395d8e25866" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019e42d5-0824-759d-b5fd-ce122183dfe6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e42d5-0824-76f3-8f3c-fbc7ee5b1202" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019e42d5-0824-759d-b5fd-ce122183dfe6" xlink:to="loc_us-gaap_NetIncomeLoss_019e42d5-0824-76f3-8f3c-fbc7ee5b1202" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e42d5-0824-7104-bc41-127b837f1a07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019e42d5-0824-759d-b5fd-ce122183dfe6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e42d5-0824-7104-bc41-127b837f1a07" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e42d5-0824-7bff-b8e9-c98e7a3de874" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_019e42d5-0824-78fa-a9f3-9ee6fc090b78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e42d5-0824-7bff-b8e9-c98e7a3de874" xlink:to="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_019e42d5-0824-78fa-a9f3-9ee6fc090b78" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_019e42d5-0824-7ad0-87a6-90c2a559752f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e42d5-0824-7bff-b8e9-c98e7a3de874" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_019e42d5-0824-7ad0-87a6-90c2a559752f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_019e42d5-0824-7f74-8f87-d9b0ca733324" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_019e42d5-0824-7e4c-a74e-82edf6a5ef93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_019e42d5-0824-7f74-8f87-d9b0ca733324" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_019e42d5-0824-7e4c-a74e-82edf6a5ef93" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_019e42d5-0824-7aa7-8b59-cccc13312d2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_019e42d5-0824-7f74-8f87-d9b0ca733324" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_019e42d5-0824-7aa7-8b59-cccc13312d2e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited" xlink:type="simple" xlink:href="hbia-20260630.xsd#CONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e42d5-0824-79f7-8462-4a0183cf90b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-73ab-99fc-090d4377110a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e42d5-0824-79f7-8462-4a0183cf90b6" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-73ab-99fc-090d4377110a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7cbe-9524-2bce35fba08d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e42d5-0824-79f7-8462-4a0183cf90b6" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7cbe-9524-2bce35fba08d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7d01-b841-e590b3d493f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e42d5-0824-79f7-8462-4a0183cf90b6" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7d01-b841-e590b3d493f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_019e42d5-0824-779a-809e-0e394d50dcf7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_019e42d5-0824-779a-809e-0e394d50dcf7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_019e42d5-0824-7d13-95ec-f8b5c0d8f41a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_019e42d5-0824-7d13-95ec-f8b5c0d8f41a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_019e42d5-0824-7752-98eb-b45355fade96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_019e42d5-0824-7752-98eb-b45355fade96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_019e42d5-0824-77ed-bcb1-a663e652a496" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_019e42d5-0824-77ed-bcb1-a663e652a496" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfFederalHomeLoanBankStock_019e42d5-0824-7258-9f3c-70ade4cc68d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfFederalHomeLoanBankStock"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_ProceedsFromSaleOfFederalHomeLoanBankStock_019e42d5-0824-7258-9f3c-70ade4cc68d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireFederalHomeLoanBankStock_019e42d5-0824-79a5-bb30-f287729b925a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireFederalHomeLoanBankStock"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_PaymentsToAcquireFederalHomeLoanBankStock_019e42d5-0824-79a5-bb30-f287729b925a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_019e42d5-0824-7b2e-92e5-81f7cdf6ad20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForProceedsFromLoansAndLeases"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_019e42d5-0824-7b2e-92e5-81f7cdf6ad20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfOtherRealEstate_019e42d5-0824-7bce-9501-5e19a9a5436a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfOtherRealEstate"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_ProceedsFromSaleOfOtherRealEstate_019e42d5-0824-7bce-9501-5e19a9a5436a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019f8d03-d830-7039-9896-c0ac9f642962" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019f8d03-d830-7039-9896-c0ac9f642962" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_PaymentsForEarnestMoney_019f8d03-d830-7b4b-8de5-3be25c5a68aa" xlink:href="hbia-20260630.xsd#hbia_PaymentsForEarnestMoney"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_hbia_PaymentsForEarnestMoney_019f8d03-d830-7b4b-8de5-3be25c5a68aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_InvestmentInTaxCreditRealEstateNet_019f8d03-d830-76ca-a438-e0b791490203" xlink:href="hbia-20260630.xsd#hbia_InvestmentInTaxCreditRealEstateNet"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e42d5-0824-7f0b-ba2f-4b2796590eb4" xlink:to="loc_hbia_InvestmentInTaxCreditRealEstateNet_019f8d03-d830-76ca-a438-e0b791490203" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e42d5-0824-7aa1-a9c5-2385b635a477" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_NetIncomeLoss_019e42d5-0824-7aa1-a9c5-2385b635a477" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_019e42d5-0824-71cb-997a-def9e829595c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_Depreciation_019e42d5-0824-71cb-997a-def9e829595c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_019e42d5-0824-7f42-a34f-35f230769a71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForLoanLossesExpensed"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_019e42d5-0824-7f42-a34f-35f230769a71" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_ForfeitureOfCommonStock_019e42d5-0824-7c75-8d91-ce7a262a5862" xlink:href="hbia-20260630.xsd#hbia_ForfeitureOfCommonStock"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_hbia_ForfeitureOfCommonStock_019e42d5-0824-7c75-8d91-ce7a262a5862" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019e42d5-0824-7e2f-9e81-574a24e4aa90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_ShareBasedCompensation_019e42d5-0824-7e2f-9e81-574a24e4aa90" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_CompensationExpensedThroughIssuanceOfCommonStock_019e42d5-0824-7768-9886-cbb345dbe7b7" xlink:href="hbia-20260630.xsd#hbia_CompensationExpensedThroughIssuanceOfCommonStock"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_hbia_CompensationExpensedThroughIssuanceOfCommonStock_019e42d5-0824-7768-9886-cbb345dbe7b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019e42d5-0824-7b4b-a140-2885bfbe99da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019e42d5-0824-7b4b-a140-2885bfbe99da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_NetGainLossOnSaleOfOtherRealEstateOwnedAndOtherRepossessedAssets_019e42d5-0824-70cf-831a-a3ef3339f266" xlink:href="hbia-20260630.xsd#hbia_NetGainLossOnSaleOfOtherRealEstateOwnedAndOtherRepossessedAssets"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_hbia_NetGainLossOnSaleOfOtherRealEstateOwnedAndOtherRepossessedAssets_019e42d5-0824-70cf-831a-a3ef3339f266" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_019e42d5-0824-7399-8181-630331857081" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_019e42d5-0824-7399-8181-630331857081" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_019e42d5-0824-77b2-81bb-1224dede0078" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_019e42d5-0824-77b2-81bb-1224dede0078" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_019e42d5-0824-7ec3-8d26-f8c52613a2f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_019e42d5-0824-7ec3-8d26-f8c52613a2f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_019e42d5-0824-762e-9c2a-176c65d57912" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_019e42d5-0824-762e-9c2a-176c65d57912" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_019e42d5-0824-7455-9644-4babc0830b55" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_019e42d5-0824-7455-9644-4babc0830b55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForOriginationOfMortgageLoansHeldForSale_019e42d5-0824-708a-81f6-f6c2dda274da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForOriginationOfMortgageLoansHeldForSale"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_PaymentsForOriginationOfMortgageLoansHeldForSale_019e42d5-0824-708a-81f6-f6c2dda274da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfLoansHeldForSale_019e42d5-0824-716b-bd05-44155d0d1e8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfLoansHeldForSale"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_ProceedsFromSaleOfLoansHeldForSale_019e42d5-0824-716b-bd05-44155d0d1e8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfLoansNet_019e42d5-0824-7ae4-b658-de49615127df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSalesOfLoansNet"/>
    <link:calculationArc order="16" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_GainLossOnSalesOfLoansNet_019e42d5-0824-7ae4-b658-de49615127df" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019e42d5-0824-7ae1-8620-06a4f987ecb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:calculationArc order="17" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019e42d5-0824-7ae1-8620-06a4f987ecb0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_019e42d5-0824-72c5-9fe9-5f3486725b92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_019e42d5-0824-72c5-9fe9-5f3486725b92" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfInvestments_019e42d5-0824-7344-b924-0fa48e6d9d0d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfInvestments"/>
    <link:calculationArc order="19" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_GainLossOnSaleOfInvestments_019e42d5-0824-7344-b924-0fa48e6d9d0d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_019e42d5-0824-7a91-9780-2421cd53df95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment"/>
    <link:calculationArc order="20" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_019e42d5-0824-7a91-9780-2421cd53df95" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxCreditsAndAdjustments_019e42d5-0824-798a-8677-8e2499b63344" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxCreditsAndAdjustments"/>
    <link:calculationArc order="21" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_us-gaap_IncomeTaxCreditsAndAdjustments_019e42d5-0824-798a-8677-8e2499b63344" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_GainLossOnSaleOfShares_019f8d07-ecd0-7314-866f-6531a338e3b7" xlink:href="hbia-20260630.xsd#hbia_GainLossOnSaleOfShares"/>
    <link:calculationArc order="22" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e42d5-0824-7dee-adda-12a21979e629" xlink:to="loc_hbia_GainLossOnSaleOfShares_019f8d07-ecd0-7314-866f-6531a338e3b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeposits_019e42d5-0824-716f-81bf-a21e6e9cfb17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInDeposits"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_us-gaap_IncreaseDecreaseInDeposits_019e42d5-0824-716f-81bf-a21e6e9cfb17" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_IncreaseDecreaseInShortTermBorrowings_019e42d5-0824-736d-b738-f072e239c0a2" xlink:href="hbia-20260630.xsd#hbia_IncreaseDecreaseInShortTermBorrowings"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_hbia_IncreaseDecreaseInShortTermBorrowings_019e42d5-0824-736d-b738-f072e239c0a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_019e42d5-0824-7632-909c-ad4fa711cb9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_019e42d5-0824-7632-909c-ad4fa711cb9a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockPlans_019e42d5-0824-7a9c-9d24-11f53c44bc15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromStockPlans"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_us-gaap_ProceedsFromStockPlans_019e42d5-0824-7a9c-9d24-11f53c44bc15" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromShortTermDebt_019e42d5-0824-7e88-93ff-1793006ebe18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromShortTermDebt"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_us-gaap_ProceedsFromShortTermDebt_019e42d5-0824-7e88-93ff-1793006ebe18" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_019e42d5-0824-7e78-bc92-ceee32485901" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDividends"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_us-gaap_PaymentsOfDividends_019e42d5-0824-7e78-bc92-ceee32485901" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019e42d5-0824-7f45-96a2-c180aa7a530f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019e42d5-0824-7f45-96a2-c180aa7a530f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfShortTermDebt_019e42d5-0824-736e-b3f0-b2ac4562de94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfShortTermDebt"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_us-gaap_RepaymentsOfShortTermDebt_019e42d5-0824-736e-b3f0-b2ac4562de94" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings_019e42d5-0824-7522-853c-0c2696f4f81f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e42d5-0824-7e3a-9eec-d838f96af8dd" xlink:to="loc_us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings_019e42d5-0824-7522-853c-0c2696f4f81f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#EarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e42d5-0824-7d96-975c-9cd5e28718ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019e42d5-0824-7f97-ad70-292e05e25c63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e42d5-0824-7d96-975c-9cd5e28718ae" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019e42d5-0824-7f97-ad70-292e05e25c63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e42d5-0824-77d5-93bf-e69df91cfaa2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e42d5-0824-7d96-975c-9cd5e28718ae" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e42d5-0824-77d5-93bf-e69df91cfaa2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/AccumulatedOtherComprehensiveLossDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#AccumulatedOtherComprehensiveLossDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/AccumulatedOtherComprehensiveLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e42d5-0824-756b-8698-0cef1015bf33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociBeforeTaxAttributableToParent_019e42d5-0824-79dd-9680-c266a2776b8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AociBeforeTaxAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e42d5-0824-756b-8698-0cef1015bf33" xlink:to="loc_us-gaap_AociBeforeTaxAttributableToParent_019e42d5-0824-79dd-9680-c266a2776b8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociTaxAttributableToParent_019e42d5-0824-713a-a93c-448698ad9867" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AociTaxAttributableToParent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e42d5-0824-756b-8698-0cef1015bf33" xlink:to="loc_us-gaap_AociTaxAttributableToParent_019e42d5-0824-713a-a93c-448698ad9867" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/SecuritiesDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#SecuritiesDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/SecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_019e42d5-0824-7ff9-9ac5-6012a1fbedb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_019e42d5-0824-75f0-86d6-80e2cba82269" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_019e42d5-0824-7ff9-9ac5-6012a1fbedb0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_019e42d5-0824-75f0-86d6-80e2cba82269" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions_019e42d5-0824-7480-ab54-f439215fe03d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_019e42d5-0824-7ff9-9ac5-6012a1fbedb0" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions_019e42d5-0824-7480-ab54-f439215fe03d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_019e42d5-0824-7d7f-b653-b74da6d2b686" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_019e42d5-0824-7ac5-870b-d12fe60e3d60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_019e42d5-0824-7d7f-b653-b74da6d2b686" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_019e42d5-0824-7ac5-870b-d12fe60e3d60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_019e42d5-0824-7672-aa87-bdf5f372e447" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_019e42d5-0824-7d7f-b653-b74da6d2b686" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_019e42d5-0824-7672-aa87-bdf5f372e447" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_019e42d5-0824-7175-8a4e-cc42d9574f88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_019e42d5-0824-7d7f-b653-b74da6d2b686" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_019e42d5-0824-7175-8a4e-cc42d9574f88" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_019e42d5-0824-7fba-89a2-8d78d8a0530b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_019e42d5-0824-7d7f-b653-b74da6d2b686" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_019e42d5-0824-7fba-89a2-8d78d8a0530b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_019e42d5-0824-7130-a2a6-5d35793a3820" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_019e42d5-0824-7468-a468-6c79ca2a08f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_019e42d5-0824-7130-a2a6-5d35793a3820" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_019e42d5-0824-7468-a468-6c79ca2a08f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_019e42d5-0824-7b7b-8c6d-9d0699c43c15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_019e42d5-0824-7130-a2a6-5d35793a3820" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_019e42d5-0824-7b7b-8c6d-9d0699c43c15" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019e42d5-0824-79c4-b2c2-e6b9de38960f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_019e42d5-0824-7870-bd84-92b9e3c095e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019e42d5-0824-79c4-b2c2-e6b9de38960f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_019e42d5-0824-7870-bd84-92b9e3c095e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_019e42d5-0824-7970-bf0e-d8ee660dc5cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019e42d5-0824-79c4-b2c2-e6b9de38960f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_019e42d5-0824-7970-bf0e-d8ee660dc5cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_019e42d5-0824-7d8e-997f-318e2fa2890a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_019e42d5-0824-7294-8671-84af5edb3357" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_019e42d5-0824-7d8e-997f-318e2fa2890a" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_019e42d5-0824-7294-8671-84af5edb3357" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_019e42d5-0824-7466-b349-db8c9f3569e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_019e42d5-0824-7d8e-997f-318e2fa2890a" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_019e42d5-0824-7466-b349-db8c9f3569e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_019e42d5-0824-7807-939c-df31bc35fcb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_019e42d5-0824-7967-927d-55ac832f08e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_019e42d5-0824-7807-939c-df31bc35fcb7" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_019e42d5-0824-7967-927d-55ac832f08e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_019e42d5-0824-7e77-baaa-1c044ea84bd0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_019e42d5-0824-7807-939c-df31bc35fcb7" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_019e42d5-0824-7e77-baaa-1c044ea84bd0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_019e42d5-0824-7c53-8bf7-2b61ab24aee3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_019e42d5-0824-7807-939c-df31bc35fcb7" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_019e42d5-0824-7c53-8bf7-2b61ab24aee3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_019e42d5-0824-779e-b880-5b701291ecb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_019e42d5-0824-7807-939c-df31bc35fcb7" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_019e42d5-0824-779e-b880-5b701291ecb9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e42d5-0824-70d9-94db-1a1c5ae6cef5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_019e42d5-0824-7694-9d78-d7f952b8b94d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e42d5-0824-70d9-94db-1a1c5ae6cef5" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_019e42d5-0824-7694-9d78-d7f952b8b94d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_019e42d5-0824-70c3-9ba9-f21bfd85e214" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e42d5-0824-70d9-94db-1a1c5ae6cef5" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_019e42d5-0824-70c3-9ba9-f21bfd85e214" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/LoansandAllowanceforCreditLossesClassesofLoansDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#LoansandAllowanceforCreditLossesClassesofLoansDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/LoansandAllowanceforCreditLossesClassesofLoansDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_019e42d5-0824-7036-9795-6edb4fabd24f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_019e42d5-0824-7a02-99e3-c24e7a7afdfe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NotesReceivableNet_019e42d5-0824-7036-9795-6edb4fabd24f" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_019e42d5-0824-7a02-99e3-c24e7a7afdfe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_019e42d5-0824-7295-b09b-9f1aab3aec69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NotesReceivableNet_019e42d5-0824-7036-9795-6edb4fabd24f" xlink:to="loc_us-gaap_NotesReceivableGross_019e42d5-0824-7295-b09b-9f1aab3aec69" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_019e42d5-0824-79d9-a822-a69d55de5e07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesReceivableGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-71da-a454-5bb424cba410" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NotesReceivableGross_019e42d5-0824-79d9-a822-a69d55de5e07" xlink:to="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-71da-a454-5bb424cba410" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_FinanceReceivableUnamortizedLoanFeeCost_019e42d5-0824-77a0-8dc9-fa90e58c021c" xlink:href="hbia-20260630.xsd#hbia_FinanceReceivableUnamortizedLoanFeeCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NotesReceivableGross_019e42d5-0824-79d9-a822-a69d55de5e07" xlink:to="loc_hbia_FinanceReceivableUnamortizedLoanFeeCost_019e42d5-0824-77a0-8dc9-fa90e58c021c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/LoansandAllowanceforCreditLossesCreditQualityIndicatorsDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#LoansandAllowanceforCreditLossesCreditQualityIndicatorsDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/LoansandAllowanceforCreditLossesCreditQualityIndicatorsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-72e6-8864-57b4ea159a90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_019e42d5-0824-7e66-aa02-f9dbb9e59977" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-72e6-8864-57b4ea159a90" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_019e42d5-0824-7e66-aa02-f9dbb9e59977" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_019e42d5-0824-7736-8751-1cd7ce8bab10" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-72e6-8864-57b4ea159a90" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_019e42d5-0824-7736-8751-1cd7ce8bab10" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_019e42d5-0824-7f3e-bcf5-d544ebcfae48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-72e6-8864-57b4ea159a90" xlink:to="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_019e42d5-0824-7f3e-bcf5-d544ebcfae48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_019e42d5-0824-781f-9005-5b9d20c21a04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-72e6-8864-57b4ea159a90" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_019e42d5-0824-781f-9005-5b9d20c21a04" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_019e42d5-0824-70b5-9c00-da457bde1516" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-72e6-8864-57b4ea159a90" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_019e42d5-0824-70b5-9c00-da457bde1516" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_019e42d5-0824-748a-99bf-5987d9fd924f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-72e6-8864-57b4ea159a90" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_019e42d5-0824-748a-99bf-5987d9fd924f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRevolving_019e42d5-0824-7861-a793-0ec5f56d6e0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRevolving"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_019e42d5-0824-72e6-8864-57b4ea159a90" xlink:to="loc_us-gaap_FinancingReceivableRevolving_019e42d5-0824-7861-a793-0ec5f56d6e0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_019e42d5-0824-7783-9492-a8efe568f9b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff_019e42d5-0824-70cd-9ceb-d1a5d3f375c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_019e42d5-0824-7783-9492-a8efe568f9b4" xlink:to="loc_us-gaap_FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff_019e42d5-0824-70cd-9ceb-d1a5d3f375c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_019e42d5-0824-76b8-bb9c-5bac851cde3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_019e42d5-0824-7783-9492-a8efe568f9b4" xlink:to="loc_us-gaap_FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_019e42d5-0824-76b8-bb9c-5bac851cde3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_019e42d5-0824-748c-b8f6-eaabec0e9825" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_019e42d5-0824-7783-9492-a8efe568f9b4" xlink:to="loc_us-gaap_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_019e42d5-0824-748c-b8f6-eaabec0e9825" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_019e42d5-0824-7d17-af26-6d907d389ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_019e42d5-0824-7783-9492-a8efe568f9b4" xlink:to="loc_us-gaap_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_019e42d5-0824-7d17-af26-6d907d389ed5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_019e42d5-0824-7428-b641-3dcaf9fbfa62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_019e42d5-0824-7783-9492-a8efe568f9b4" xlink:to="loc_us-gaap_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_019e42d5-0824-7428-b641-3dcaf9fbfa62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_019e42d5-0824-74ce-a02e-298cf99d5d38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_019e42d5-0824-7783-9492-a8efe568f9b4" xlink:to="loc_us-gaap_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_019e42d5-0824-74ce-a02e-298cf99d5d38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRevolvingWriteoff_019e42d5-0824-7e89-b666-2f3597980bfb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRevolvingWriteoff"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_019e42d5-0824-7783-9492-a8efe568f9b4" xlink:to="loc_us-gaap_FinancingReceivableRevolvingWriteoff_019e42d5-0824-7e89-b666-2f3597980bfb" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/LeasesMinimumFutureRentalCommitmentsTopic842Details" xlink:type="simple" xlink:href="hbia-20260630.xsd#LeasesMinimumFutureRentalCommitmentsTopic842Details"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/LeasesMinimumFutureRentalCommitmentsTopic842Details" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-7afc-888d-3e3ccaa5061d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_019e42d5-0825-7869-abc8-1a2421008752" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-7afc-888d-3e3ccaa5061d" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_019e42d5-0825-7869-abc8-1a2421008752" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_019e42d5-0825-7c4d-b692-c33916ea7d31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-7afc-888d-3e3ccaa5061d" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_019e42d5-0825-7c4d-b692-c33916ea7d31" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_019e42d5-0825-7393-a41f-5d05b81526e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-7afc-888d-3e3ccaa5061d" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_019e42d5-0825-7393-a41f-5d05b81526e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_019e42d5-0825-744a-bc10-1cd31a541cb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-7afc-888d-3e3ccaa5061d" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_019e42d5-0825-744a-bc10-1cd31a541cb0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_019e42d5-0825-731b-bc16-ec4ee1c69209" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-7afc-888d-3e3ccaa5061d" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_019e42d5-0825-731b-bc16-ec4ee1c69209" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_019e42d5-0825-7b99-bb2f-da792110cd0d" xlink:href="hbia-20260630.xsd#hbia_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-7afc-888d-3e3ccaa5061d" xlink:to="loc_hbia_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_019e42d5-0825-7b99-bb2f-da792110cd0d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/LeasesMinimumFutureRentalCommitmentsTopic842Details_1" xlink:type="simple" xlink:href="hbia-20260630.xsd#LeasesMinimumFutureRentalCommitmentsTopic842Details_1"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/LeasesMinimumFutureRentalCommitmentsTopic842Details_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-756e-96f0-93d40fbeaa1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_019e42d5-0825-7dfd-9981-8183d55c45b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-756e-96f0-93d40fbeaa1f" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_019e42d5-0825-7dfd-9981-8183d55c45b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_019e42d5-0825-73ab-9eee-df73b4900016" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e42d5-0825-756e-96f0-93d40fbeaa1f" xlink:to="loc_us-gaap_OperatingLeaseLiability_019e42d5-0825-73ab-9eee-df73b4900016" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/FairValueMeasurementsCarryingValueandEstimatedFairValueDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#FairValueMeasurementsCarryingValueandEstimatedFairValueDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/FairValueMeasurementsCarryingValueandEstimatedFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019e42d5-0825-7656-93d7-5f4028b1bb9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019e42d5-0825-7656-93d7-5f4028b1bb9b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_InvestmentSecuritiesFairValueDisclosure_019e42d5-0825-7582-83e6-e8ddd2cdd2fc" xlink:href="hbia-20260630.xsd#hbia_InvestmentSecuritiesFairValueDisclosure"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_InvestmentSecuritiesFairValueDisclosure_019e42d5-0825-7582-83e6-e8ddd2cdd2fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansHeldForSaleFairValueDisclosure_019e42d5-0825-7354-8a73-49686b6ebfbf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansHeldForSaleFairValueDisclosure"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_us-gaap_LoansHeldForSaleFairValueDisclosure_019e42d5-0825-7354-8a73-49686b6ebfbf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_AgriculturalLoansReceivableFairValueDisclosure_019e42d5-0825-74fe-877a-e43bafb71a74" xlink:href="hbia-20260630.xsd#hbia_AgriculturalLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_AgriculturalLoansReceivableFairValueDisclosure_019e42d5-0825-74fe-877a-e43bafb71a74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_CommercialAndFinancialLoansReceivableFairValueDisclosure_019e42d5-0825-724c-99da-62448beccd3b" xlink:href="hbia-20260630.xsd#hbia_CommercialAndFinancialLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_CommercialAndFinancialLoansReceivableFairValueDisclosure_019e42d5-0825-724c-99da-62448beccd3b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_RealEstateConstruction1To4FamilyResidentialLoansReceivableFairValueDisclosure_019e42d5-0825-775a-b66b-b477f32b6423" xlink:href="hbia-20260630.xsd#hbia_RealEstateConstruction1To4FamilyResidentialLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_RealEstateConstruction1To4FamilyResidentialLoansReceivableFairValueDisclosure_019e42d5-0825-775a-b66b-b477f32b6423" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_ConstructionLandDevelopmentAndCommercialLoansReceivableFairValueDisclosure_019e42d5-0825-71ce-ad64-2ee8dfcf6a9c" xlink:href="hbia-20260630.xsd#hbia_ConstructionLandDevelopmentAndCommercialLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_ConstructionLandDevelopmentAndCommercialLoansReceivableFairValueDisclosure_019e42d5-0825-71ce-ad64-2ee8dfcf6a9c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_FarmlandMortgageLoansReceivableFairValueDisclosure_019e42d5-0825-7a88-91f3-3f1fe43cd4e0" xlink:href="hbia-20260630.xsd#hbia_FarmlandMortgageLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_FarmlandMortgageLoansReceivableFairValueDisclosure_019e42d5-0825-7a88-91f3-3f1fe43cd4e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_Mortgage1To4FamilyResidentialFirstLiensFairValueDisclosure_019e42d5-0825-7025-a9af-c1037212ddc2" xlink:href="hbia-20260630.xsd#hbia_Mortgage1To4FamilyResidentialFirstLiensFairValueDisclosure"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_Mortgage1To4FamilyResidentialFirstLiensFairValueDisclosure_019e42d5-0825-7025-a9af-c1037212ddc2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_Mortgage1To4FamilyResidentialJuniorLiensFairValueDisclosure_019e42d5-0825-7aaf-a86b-e4a0b643bb91" xlink:href="hbia-20260630.xsd#hbia_Mortgage1To4FamilyResidentialJuniorLiensFairValueDisclosure"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_Mortgage1To4FamilyResidentialJuniorLiensFairValueDisclosure_019e42d5-0825-7aaf-a86b-e4a0b643bb91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_MortgageMultiFamilyLoanReceivableFairValueDisclosure_019e42d5-0825-773c-b18d-2582e2091390" xlink:href="hbia-20260630.xsd#hbia_MortgageMultiFamilyLoanReceivableFairValueDisclosure"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_MortgageMultiFamilyLoanReceivableFairValueDisclosure_019e42d5-0825-773c-b18d-2582e2091390" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_CommercialMortgageLoanReceivableFairValueDisclosure_019e42d5-0825-7e48-a05a-b286120d6429" xlink:href="hbia-20260630.xsd#hbia_CommercialMortgageLoanReceivableFairValueDisclosure"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_CommercialMortgageLoanReceivableFairValueDisclosure_019e42d5-0825-7e48-a05a-b286120d6429" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_LoansReceivableIndividualFairValueDisclosure_019e42d5-0825-7c41-9c0e-beb07e64cfd2" xlink:href="hbia-20260630.xsd#hbia_LoansReceivableIndividualFairValueDisclosure"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_LoansReceivableIndividualFairValueDisclosure_019e42d5-0825-7c41-9c0e-beb07e64cfd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_ObligationsStateAndPoliticalSubdivisionsFairValueDisclosure_019e42d5-0825-7d5e-ae23-62a1783ccc48" xlink:href="hbia-20260630.xsd#hbia_ObligationsStateAndPoliticalSubdivisionsFairValueDisclosure"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_ObligationsStateAndPoliticalSubdivisionsFairValueDisclosure_019e42d5-0825-7d5e-ae23-62a1783ccc48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_AccruedInterestReceivableFairValueDisclosure_019e42d5-0825-7d5e-a959-2791e176f886" xlink:href="hbia-20260630.xsd#hbia_AccruedInterestReceivableFairValueDisclosure"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ed8-951e-21c9e290a3f6" xlink:to="loc_hbia_AccruedInterestReceivableFairValueDisclosure_019e42d5-0825-7d5e-a959-2791e176f886" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_019e42d5-0825-7db9-813f-47d57c1fdc6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_DepositsNonInterestBearingFairValueDisclosure_019e42d5-0825-75e6-913b-7344c2470339" xlink:href="hbia-20260630.xsd#hbia_DepositsNonInterestBearingFairValueDisclosure"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_019e42d5-0825-7db9-813f-47d57c1fdc6c" xlink:to="loc_hbia_DepositsNonInterestBearingFairValueDisclosure_019e42d5-0825-75e6-913b-7344c2470339" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_AccruedInterestPayableFairValueDisclosure_019e42d5-0825-70c8-98b8-0745e9019602" xlink:href="hbia-20260630.xsd#hbia_AccruedInterestPayableFairValueDisclosure"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_019e42d5-0825-7db9-813f-47d57c1fdc6c" xlink:to="loc_hbia_AccruedInterestPayableFairValueDisclosure_019e42d5-0825-70c8-98b8-0745e9019602" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_DepositsInterestBearingFairValueDisclosure_019e42d5-0825-706f-8066-cd2dbf3a60b1" xlink:href="hbia-20260630.xsd#hbia_DepositsInterestBearingFairValueDisclosure"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_019e42d5-0825-7db9-813f-47d57c1fdc6c" xlink:to="loc_hbia_DepositsInterestBearingFairValueDisclosure_019e42d5-0825-706f-8066-cd2dbf3a60b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_019e42d5-0825-75e8-9463-ea6bcfc2c697" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_019e42d5-0825-7db9-813f-47d57c1fdc6c" xlink:to="loc_us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_019e42d5-0825-75e8-9463-ea6bcfc2c697" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherShortTermBorrowings_019e42d5-0825-7a5d-8dac-cb0e1952c191" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherShortTermBorrowings"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_019e42d5-0825-7db9-813f-47d57c1fdc6c" xlink:to="loc_us-gaap_OtherShortTermBorrowings_019e42d5-0825-7a5d-8dac-cb0e1952c191" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability_019e42d5-0825-7192-aed0-9b4d9144c214" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_LoanCommitmentsFairValueDisclosureOffbalanceSheetRisksAmountLiability_019e42d5-0825-740c-af2b-3f4fc181967a" xlink:href="hbia-20260630.xsd#hbia_LoanCommitmentsFairValueDisclosureOffbalanceSheetRisksAmountLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability_019e42d5-0825-7192-aed0-9b4d9144c214" xlink:to="loc_hbia_LoanCommitmentsFairValueDisclosureOffbalanceSheetRisksAmountLiability_019e42d5-0825-740c-af2b-3f4fc181967a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_LettersOfCreditFairValueDisclosureOffbalanceSheetRisksAmountLiability_019e42d5-0825-761a-925d-f9d08957fb84" xlink:href="hbia-20260630.xsd#hbia_LettersOfCreditFairValueDisclosureOffbalanceSheetRisksAmountLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability_019e42d5-0825-7192-aed0-9b4d9144c214" xlink:to="loc_hbia_LettersOfCreditFairValueDisclosureOffbalanceSheetRisksAmountLiability_019e42d5-0825-761a-925d-f9d08957fb84" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/FairValueMeasurementsAssetsandLiabilitiesRecurringBasisDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#FairValueMeasurementsAssetsandLiabilitiesRecurringBasisDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/FairValueMeasurementsAssetsandLiabilitiesRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetAssetLiability_019e42d5-0825-7829-8809-fff1b98b8024" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueNetAssetLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e42d5-0825-7b11-a08a-713944897e4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueNetAssetLiability_019e42d5-0825-7829-8809-fff1b98b8024" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e42d5-0825-7b11-a08a-713944897e4d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/FairValueMeasurementsAssetsandLiabilitiesonaNonrecurringBasisDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#FairValueMeasurementsAssetsandLiabilitiesonaNonrecurringBasisDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/FairValueMeasurementsAssetsandLiabilitiesonaNonrecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_OtherRealEstateFairValueDisclosure_019e42d5-0825-7ecc-936a-45ee6305b9e8" xlink:href="hbia-20260630.xsd#hbia_OtherRealEstateFairValueDisclosure"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_OtherRealEstateFairValueDisclosure_019e42d5-0825-7ecc-936a-45ee6305b9e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_FarmlandMortgageLoansReceivableFairValueDisclosure_019e42d5-0825-70c0-9552-e1dd7cccfc65" xlink:href="hbia-20260630.xsd#hbia_FarmlandMortgageLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_FarmlandMortgageLoansReceivableFairValueDisclosure_019e42d5-0825-70c0-9552-e1dd7cccfc65" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_Construction1To4FamilyResidentialFairValueDisclosure_019e42d5-0825-774e-b578-b252661e6d4b" xlink:href="hbia-20260630.xsd#hbia_Construction1To4FamilyResidentialFairValueDisclosure"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_Construction1To4FamilyResidentialFairValueDisclosure_019e42d5-0825-774e-b578-b252661e6d4b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_Mortgage1To4FamilyResidentialFirstLiensFairValueDisclosure_019e42d5-0825-74b0-bb03-513305116141" xlink:href="hbia-20260630.xsd#hbia_Mortgage1To4FamilyResidentialFirstLiensFairValueDisclosure"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_Mortgage1To4FamilyResidentialFirstLiensFairValueDisclosure_019e42d5-0825-74b0-bb03-513305116141" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_AgriculturalLoansReceivableFairValueDisclosure_019e42d5-0825-7443-8099-f72b5f49989c" xlink:href="hbia-20260630.xsd#hbia_AgriculturalLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_AgriculturalLoansReceivableFairValueDisclosure_019e42d5-0825-7443-8099-f72b5f49989c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_CommercialAndFinancialLoansReceivableFairValueDisclosure_019e42d5-0825-75da-ae14-f6891277431f" xlink:href="hbia-20260630.xsd#hbia_CommercialAndFinancialLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_CommercialAndFinancialLoansReceivableFairValueDisclosure_019e42d5-0825-75da-ae14-f6891277431f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_ConstructionLandDevelopmentAndCommercialLoansReceivableFairValueDisclosure_019e42d5-0825-74f3-9565-98e2a0ef779b" xlink:href="hbia-20260630.xsd#hbia_ConstructionLandDevelopmentAndCommercialLoansReceivableFairValueDisclosure"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_ConstructionLandDevelopmentAndCommercialLoansReceivableFairValueDisclosure_019e42d5-0825-74f3-9565-98e2a0ef779b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_Mortgage1To4FamilyResidentialJuniorLiensFairValueDisclosure_019e42d5-0825-7b4a-8831-ea8d9aae483f" xlink:href="hbia-20260630.xsd#hbia_Mortgage1To4FamilyResidentialJuniorLiensFairValueDisclosure"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_Mortgage1To4FamilyResidentialJuniorLiensFairValueDisclosure_019e42d5-0825-7b4a-8831-ea8d9aae483f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_MortgageMultiFamilyLoanReceivableFairValueDisclosure_019e42d5-0825-7250-bd30-4f3e7ed5e18b" xlink:href="hbia-20260630.xsd#hbia_MortgageMultiFamilyLoanReceivableFairValueDisclosure"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_MortgageMultiFamilyLoanReceivableFairValueDisclosure_019e42d5-0825-7250-bd30-4f3e7ed5e18b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_CommercialMortgageLoanReceivableFairValueDisclosure_019e42d5-0825-7abc-8087-25be8a2ddbb2" xlink:href="hbia-20260630.xsd#hbia_CommercialMortgageLoanReceivableFairValueDisclosure"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_CommercialMortgageLoanReceivableFairValueDisclosure_019e42d5-0825-7abc-8087-25be8a2ddbb2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hbia_LoansReceivableIndividualFairValueDisclosure_019e42d5-0825-7980-8732-6737f1746880" xlink:href="hbia-20260630.xsd#hbia_LoansReceivableIndividualFairValueDisclosure"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019e42d5-0825-7ae2-bd80-09a74f37c0f3" xlink:to="loc_hbia_LoansReceivableIndividualFairValueDisclosure_019e42d5-0825-7980-8732-6737f1746880" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.hillsbank.com/role/BorrowingsDetails" xlink:type="simple" xlink:href="hbia-20260630.xsd#BorrowingsDetails"/>
  <link:calculationLink xlink:role="http://www.hillsbank.com/role/BorrowingsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_019e42d5-0900-774e-804b-c59cb4768301" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermBorrowings"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsPurchased_019e42d5-0900-7a2c-9fbf-07610c65bb99" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalFundsPurchased"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ShortTermBorrowings_019e42d5-0900-774e-804b-c59cb4768301" xlink:to="loc_us-gaap_FederalFundsPurchased_019e42d5-0900-7a2c-9fbf-07610c65bb99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvancesFromFederalHomeLoanBanks_019e42d5-0900-77b9-a3a9-8c0acfce0a4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdvancesFromFederalHomeLoanBanks"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_019e42d5-0900-78b3-881a-74858f5b0170" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AdvancesFromFederalHomeLoanBanks_019e42d5-0900-77b9-a3a9-8c0acfce0a4d" xlink:to="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_019e42d5-0900-78b3-881a-74858f5b0170" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
