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  <xs:element id="efx_SharesIssuedUnderStockAndBenefitPlansNetOfMinimumTaxWithholdingsValues" abstract="false" name="SharesIssuedUnderStockAndBenefitPlansNetOfMinimumTaxWithholdingsValues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="efx_DividendsPaidToEmployeeBenefitsTrust" abstract="false" name="DividendsPaidToEmployeeBenefitsTrust" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="efx_NatureOfOperationsPolicyPolicyTextBlock" abstract="false" name="NatureOfOperationsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="efx_OtherCurrentAssetsPolicyPolicyTextBlock" abstract="false" name="OtherCurrentAssetsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="efx_OtherAssetsPolicyTextBlock" abstract="false" name="OtherAssetsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="efx_OtherCurrentLiabilitiesPolicyPolicyTextBlock" abstract="false" name="OtherCurrentLiabilitiesPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="efx_LongTermDebtCarryingAmount" abstract="false" name="LongTermDebtCarryingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="efx_TaxReceivableAndCustomerFundsHeldCurrent" abstract="false" name="TaxReceivableAndCustomerFundsHeldCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="efx_AccountsReceivableAllowanceForCreditLossWriteoffRecoveryNet" abstract="false" name="AccountsReceivableAllowanceForCreditLossWriteoffRecoveryNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="efx_WorkforceSolutionsMember" abstract="true" name="WorkforceSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="efx_VerificationServicesMember" abstract="true" name="VerificationServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_EmployerServicesMember" abstract="true" name="EmployerServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_OnlineInformationSolutionsMember" abstract="true" name="OnlineInformationSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_FinancialMarketingServicesMember" abstract="true" name="FinancialMarketingServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_IncreaseDecreaseinRevenueFromContractWithCustomerExcludingAssessedTaxAmount" abstract="false" name="IncreaseDecreaseinRevenueFromContractWithCustomerExcludingAssessedTaxAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="efx_IncreaseDecreaseInRevenueFromContractWithCustomerExcludingAssessedTaxPercent" abstract="false" name="IncreaseDecreaseInRevenueFromContractWithCustomerExcludingAssessedTaxPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="efx_ProprietaryDatabaseMember" abstract="true" name="ProprietaryDatabaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_TechnologyAndSoftwareMember" abstract="true" name="TechnologyAndSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_TradenamesAndOtherMember" abstract="true" name="TradenamesAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="efx_NotesThreePointTwoFiveDueJuneTwoThousandTwentySixMember" abstract="true" name="NotesThreePointTwoFiveDueJuneTwoThousandTwentySixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_NotesFivePointOnePercentDueDecember2027Member" abstract="true" name="NotesFivePointOnePercentDueDecember2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_NotesFivePointOnePercentDueJune2028Member" abstract="true" name="NotesFivePointOnePercentDueJune2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_DebenturesSixPointNineZeroPercentDueJulyTwentyTwentyEightMember" abstract="true" name="DebenturesSixPointNineZeroPercentDueJulyTwentyTwentyEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_NotesFourPointEightZeroPercentDueSeptember2029Member" abstract="true" name="NotesFourPointEightZeroPercentDueSeptember2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_NotesThreePointOnePercentDueMay2030Member" abstract="true" name="NotesThreePointOnePercentDueMay2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_NotesTwoPointThreeFivePercentDueSeptember2031Member" abstract="true" name="NotesTwoPointThreeFivePercentDueSeptember2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_NotesSevenPointZeroPercentDueJulyTwentyThirtySevenMember" abstract="true" name="NotesSevenPointZeroPercentDueJulyTwentyThirtySevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_DebtOtherMember" abstract="true" name="DebtOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_LineOfCreditFacilityExtensionOptionTerm" abstract="false" name="LineOfCreditFacilityExtensionOptionTerm" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="efx_CommercialPaperMaximumBorrowingCapacity" abstract="false" name="CommercialPaperMaximumBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="efx_CommercialPaperMaturityPeriodRange" abstract="false" name="CommercialPaperMaturityPeriodRange" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="efx_CommercialPaperMaximumBorrowingCapacityOutstandingAmount" abstract="false" name="CommercialPaperMaximumBorrowingCapacityOutstandingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="efx_CommercialPaperMaturityActualPeriodRange" abstract="false" name="CommercialPaperMaturityActualPeriodRange" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
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  <xs:element id="efx_FCPALitigationMember" abstract="true" name="FCPALitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_DataProcessingOutsourcingServicesAndOtherAgreementsMember" abstract="false" name="DataProcessingOutsourcingServicesAndOtherAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="efx_CommitmentsAndContingenciesDisclosureLineItems" abstract="true" name="CommitmentsAndContingenciesDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="efx_ServiceAgreementsExpirationPeriod" abstract="false" name="ServiceAgreementsExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:gYearItemType"/>
  <xs:element id="efx_JohnW.GambleJr.Member" abstract="true" name="JohnW.GambleJr.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
