<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.creditacceptance.com/20170331" xmlns:cacc="http://www.creditacceptance.com/20170331" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-roles-2016-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-types-2016-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2016-01-31" schemaLocation="http://xbrl.sec.gov/country/2016/country-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2016-01-31" schemaLocation="http://xbrl.sec.gov/currency/2016/currency-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2014-01-31" schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2016-01-31" schemaLocation="http://xbrl.sec.gov/exch/2016/exch-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cacc-20170331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cacc-20170331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cacc-20170331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cacc-20170331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="BasisOfPresentation" roleURI="http://www.creditacceptance.com/role/BasisOfPresentation">
        <link:definition>2101100 - Disclosure - Basis of Presentation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies" roleURI="http://www.creditacceptance.com/role/CommitmentsAndContingencies">
        <link:definition>2115100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesDetails" roleURI="http://www.creditacceptance.com/role/CommitmentsAndContingenciesDetails">
        <link:definition>2415401 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.creditacceptance.com/role/ConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.creditacceptance.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001501 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlowsUnaudited" roleURI="http://www.creditacceptance.com/role/ConsolidatedStatementsOfCashFlowsUnaudited">
        <link:definition>1004000 - Statement - Consolidated Statements of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfComprehensiveIncomeUnaudited" roleURI="http://www.creditacceptance.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited">
        <link:definition>1003000 - Statement - Consolidated Statements of Comprehensive Income (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfIncomeUnaudited" roleURI="http://www.creditacceptance.com/role/ConsolidatedStatementsOfIncomeUnaudited">
        <link:definition>1002000 - Statement - Consolidated Statements of Income (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.creditacceptance.com/role/Debt">
        <link:definition>2108100 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtDebtScheduleOfPrincipalDebtOutstandingDetails" roleURI="http://www.creditacceptance.com/role/DebtDebtScheduleOfPrincipalDebtOutstandingDetails">
        <link:definition>2408403 - Disclosure - Debt Debt (Schedule of Principal Debt Outstanding) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtNarrativeDetails" roleURI="http://www.creditacceptance.com/role/DebtNarrativeDetails">
        <link:definition>2408402 - Disclosure - Debt (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleOfAdditionalInformationRelatedToDebtInstrumentsDetails" roleURI="http://www.creditacceptance.com/role/DebtScheduleOfAdditionalInformationRelatedToDebtInstrumentsDetails">
        <link:definition>2408405 - Disclosure - Debt (Schedule of Additional Information Related to Debt Instruments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleOfGeneralInformationOfFinancingTransactionDetails" roleURI="http://www.creditacceptance.com/role/DebtScheduleOfGeneralInformationOfFinancingTransactionDetails">
        <link:definition>2408404 - Disclosure - Debt (Schedule of General Information of Financing Transaction) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtSummaryOfDebtDetails" roleURI="http://www.creditacceptance.com/role/DebtSummaryOfDebtDetails">
        <link:definition>2408406 - Disclosure - Debt (Summary of Debt) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtSummaryOfTermAbsFinancingsDetails" roleURI="http://www.creditacceptance.com/role/DebtSummaryOfTermAbsFinancingsDetails">
        <link:definition>2408407 - Disclosure - Debt (Summary of Term ABS Financings) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.creditacceptance.com/role/DebtTables">
        <link:definition>2308301 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeAndHedgingInstruments" roleURI="http://www.creditacceptance.com/role/DerivativeAndHedgingInstruments">
        <link:definition>2109100 - Disclosure - Derivative and Hedging Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeAndHedgingInstrumentsScheduleOfTermsOfInterestRateCapAgreementsDetails" roleURI="http://www.creditacceptance.com/role/DerivativeAndHedgingInstrumentsScheduleOfTermsOfInterestRateCapAgreementsDetails">
        <link:definition>2409402 - Disclosure - Derivative and Hedging Instruments (Schedule of Terms of Interest Rate Cap Agreements) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeAndHedgingInstrumentsTables" roleURI="http://www.creditacceptance.com/role/DerivativeAndHedgingInstrumentsTables">
        <link:definition>2309301 - Disclosure - Derivative and Hedging Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionOfBusiness" roleURI="http://www.creditacceptance.com/role/DescriptionOfBusiness">
        <link:definition>2102100 - Disclosure - Description of Business</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionOfBusinessNarrativeDetails" roleURI="http://www.creditacceptance.com/role/DescriptionOfBusinessNarrativeDetails">
        <link:definition>2402402 - Disclosure - Description of Business (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionOfBusinessPercentageOfConsumerLoansAssignedBasedOnVolumesDetails" roleURI="http://www.creditacceptance.com/role/DescriptionOfBusinessPercentageOfConsumerLoansAssignedBasedOnVolumesDetails">
        <link:definition>2402404 - Disclosure - Description of Business (Percentage of Consumer Loans Assigned Based on Volumes) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionOfBusinessPercentageOfConsumerLoansAssignedWithFicoScoreOfLessThan650OrNoFicoScoreDetails" roleURI="http://www.creditacceptance.com/role/DescriptionOfBusinessPercentageOfConsumerLoansAssignedWithFicoScoreOfLessThan650OrNoFicoScoreDetails">
        <link:definition>2402403 - Disclosure - Description of Business (Percentage of Consumer Loans Assigned with FICO Score of Less Than 650 or No FICO Score) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionOfBusinessTables" roleURI="http://www.creditacceptance.com/role/DescriptionOfBusinessTables">
        <link:definition>2302301 - Disclosure - Description of Business (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://www.creditacceptance.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - Document - Document And Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueOfFinancialInstruments" roleURI="http://www.creditacceptance.com/role/FairValueOfFinancialInstruments">
        <link:definition>2104100 - Disclosure - Fair Value of Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueOfFinancialInstrumentsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" roleURI="http://www.creditacceptance.com/role/FairValueOfFinancialInstrumentsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails">
        <link:definition>2404403 - Disclosure - Fair Value of Financial Instruments (Schedule of Assets and Liabilities, Measured at Fair Value on a Recurring Basis) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueOfFinancialInstrumentsScheduleOfComparisonOfCarryingValueAndEstimatedFairValueOfFinancialInstrumentsDetails" roleURI="http://www.creditacceptance.com/role/FairValueOfFinancialInstrumentsScheduleOfComparisonOfCarryingValueAndEstimatedFairValueOfFinancialInstrumentsDetails">
        <link:definition>2404402 - Disclosure - Fair Value of Financial Instruments (Schedule of Comparison of the Carrying Value and Estimated Fair Value of Financial Instruments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueOfFinancialInstrumentsTables" roleURI="http://www.creditacceptance.com/role/FairValueOfFinancialInstrumentsTables">
        <link:definition>2304301 - Disclosure - Fair Value of Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.creditacceptance.com/role/IncomeTaxes">
        <link:definition>2111100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesIncomeTaxesNarrativeDetails" roleURI="http://www.creditacceptance.com/role/IncomeTaxesIncomeTaxesNarrativeDetails">
        <link:definition>2411402 - Disclosure - Income Taxes Income Taxes (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleOfReconciliationOfUSFederalStatutoryRateToEffectiveTaxRateDetails" roleURI="http://www.creditacceptance.com/role/IncomeTaxesScheduleOfReconciliationOfUSFederalStatutoryRateToEffectiveTaxRateDetails">
        <link:definition>2411403 - Disclosure - Income Taxes (Schedule of Reconciliation of the U.S. Federal Statutory Rate to Effective Tax Rate) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.creditacceptance.com/role/IncomeTaxesTables">
        <link:definition>2311301 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivable" roleURI="http://www.creditacceptance.com/role/LoansReceivable">
        <link:definition>2106100 - Disclosure - Loans Receivable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableNarrativeDetails" roleURI="http://www.creditacceptance.com/role/LoansReceivableNarrativeDetails">
        <link:definition>2406402 - Disclosure - Loans Receivable (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableScheduleOfConsumerLoansForecastedCollectionPercentageDetails" roleURI="http://www.creditacceptance.com/role/LoansReceivableScheduleOfConsumerLoansForecastedCollectionPercentageDetails">
        <link:definition>2406407 - Disclosure - Loans Receivable (Schedule of Consumer Loans Forecasted Collection Percentage) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableScheduleOfConsumerLoansPerformanceDetails" roleURI="http://www.creditacceptance.com/role/LoansReceivableScheduleOfConsumerLoansPerformanceDetails">
        <link:definition>2406408 - Disclosure - Loans Receivable (Schedule of Consumer Loans Performance) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableScheduleOfLoansReceivableDetails" roleURI="http://www.creditacceptance.com/role/LoansReceivableScheduleOfLoansReceivableDetails">
        <link:definition>2406403 - Disclosure - Loans Receivable (Schedule of Loans Receivable) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableSummaryOfChangesInAccretableYieldDetails" roleURI="http://www.creditacceptance.com/role/LoansReceivableSummaryOfChangesInAccretableYieldDetails">
        <link:definition>2406405 - Disclosure - Loans Receivable (Summary of Changes in Accretable Yield) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableSummaryOfChangesInAllowanceForCreditLossesDetails" roleURI="http://www.creditacceptance.com/role/LoansReceivableSummaryOfChangesInAllowanceForCreditLossesDetails">
        <link:definition>2406409 - Disclosure - Loans Receivable (Summary of Changes In Allowance for Credit Losses) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableSummaryOfChangesInLoansReceivableDetails" roleURI="http://www.creditacceptance.com/role/LoansReceivableSummaryOfChangesInLoansReceivableDetails">
        <link:definition>2406404 - Disclosure - Loans Receivable (Summary of Changes in Loans Receivable) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableSummaryOfInformationRelatedToNewConsumerLoanAssignmentsDetails" roleURI="http://www.creditacceptance.com/role/LoansReceivableSummaryOfInformationRelatedToNewConsumerLoanAssignmentsDetails">
        <link:definition>2406406 - Disclosure - Loans Receivable (Summary of Information Related to New Consumer Loan Assignments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansReceivableTables" roleURI="http://www.creditacceptance.com/role/LoansReceivableTables">
        <link:definition>2306301 - Disclosure - Loans Receivable (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomePerShare" roleURI="http://www.creditacceptance.com/role/NetIncomePerShare">
        <link:definition>2112100 - Disclosure - Net Income Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomePerShareComputationOfWeightedAverageSharesOutstandingBasicAndDilutedDetails" roleURI="http://www.creditacceptance.com/role/NetIncomePerShareComputationOfWeightedAverageSharesOutstandingBasicAndDilutedDetails">
        <link:definition>2412402 - Disclosure - Net Income Per Share (Computation of Weighted Average Shares Outstanding Basic and Diluted) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomePerShareTables" roleURI="http://www.creditacceptance.com/role/NetIncomePerShareTables">
        <link:definition>2312301 - Disclosure - Net Income Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ReinsuranceReinsuranceNotes" roleURI="http://www.creditacceptance.com/role/ReinsuranceReinsuranceNotes">
        <link:definition>2107100 - Disclosure - Reinsurance Reinsurance (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ReinsuranceReinsuranceScheduleOfTrustAssetsAndReinsuranceLiabilitiesDetails" roleURI="http://www.creditacceptance.com/role/ReinsuranceReinsuranceScheduleOfTrustAssetsAndReinsuranceLiabilitiesDetails">
        <link:definition>2407403 - Disclosure - Reinsurance Reinsurance (Schedule of Trust Assets and Reinsurance Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ReinsuranceReinsuranceSummaryOfReinsuranceActivityDetails" roleURI="http://www.creditacceptance.com/role/ReinsuranceReinsuranceSummaryOfReinsuranceActivityDetails">
        <link:definition>2407402 - Disclosure - Reinsurance Reinsurance (Summary of Reinsurance Activity) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ReinsuranceReinsuranceTables" roleURI="http://www.creditacceptance.com/role/ReinsuranceReinsuranceTables">
        <link:definition>2307301 - Disclosure - Reinsurance Reinsurance (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactions" roleURI="http://www.creditacceptance.com/role/RelatedPartyTransactions">
        <link:definition>2110100 - Disclosure - Related Party Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsDetails" roleURI="http://www.creditacceptance.com/role/RelatedPartyTransactionsDetails">
        <link:definition>2410402 - Disclosure - Related Party Transactions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsTables" roleURI="http://www.creditacceptance.com/role/RelatedPartyTransactionsTables">
        <link:definition>2310301 - Disclosure - Related Party Transactions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestrictedSecuritiesAvailableForSale" roleURI="http://www.creditacceptance.com/role/RestrictedSecuritiesAvailableForSale">
        <link:definition>2105100 - Disclosure - Restricted Securities Available for Sale</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestrictedSecuritiesAvailableForSaleScheduleOfCostAndEstimatedFairValuesOfDebtSecuritiesByContractualMaturityDetails" roleURI="http://www.creditacceptance.com/role/RestrictedSecuritiesAvailableForSaleScheduleOfCostAndEstimatedFairValuesOfDebtSecuritiesByContractualMaturityDetails">
        <link:definition>2405404 - Disclosure - Restricted Securities Available for Sale (Schedule of Cost and Estimated Fair Values of Debt Securities by Contractual Maturity) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestrictedSecuritiesAvailableForSaleScheduleOfRestrictedSecuritiesAvailableForSaleByAgingCatagoryDetails" roleURI="http://www.creditacceptance.com/role/RestrictedSecuritiesAvailableForSaleScheduleOfRestrictedSecuritiesAvailableForSaleByAgingCatagoryDetails">
        <link:definition>2405403 - Disclosure - Restricted Securities Available for Sale (Schedule of Restricted Securities Available for Sale by Aging Catagory) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestrictedSecuritiesAvailableForSaleScheduleOfRestrictedSecuritiesAvailableForSaleDetails" roleURI="http://www.creditacceptance.com/role/RestrictedSecuritiesAvailableForSaleScheduleOfRestrictedSecuritiesAvailableForSaleDetails">
        <link:definition>2405402 - Disclosure - Restricted Securities Available for Sale (Schedule of Restricted Securities Available for Sale) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestrictedSecuritiesAvailableForSaleTables" roleURI="http://www.creditacceptance.com/role/RestrictedSecuritiesAvailableForSaleTables">
        <link:definition>2305301 - Disclosure - Restricted Securities Available For Sale (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlans" roleURI="http://www.creditacceptance.com/role/StockBasedCompensationPlans">
        <link:definition>2114100 - Disclosure - Stock-Based Compensation Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlansScheduleOfStockBasedCompensationExpenseDetails" roleURI="http://www.creditacceptance.com/role/StockBasedCompensationPlansScheduleOfStockBasedCompensationExpenseDetails">
        <link:definition>2414402 - Disclosure - Stock-Based Compensation Plans (Schedule of Stock Based Compensation Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlansTables" roleURI="http://www.creditacceptance.com/role/StockBasedCompensationPlansTables">
        <link:definition>2314301 - Disclosure - Stock-Based Compensation Plans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockRepurchases" roleURI="http://www.creditacceptance.com/role/StockRepurchases">
        <link:definition>2113100 - Disclosure - Stock Repurchases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockRepurchasesDetails" roleURI="http://www.creditacceptance.com/role/StockRepurchasesDetails">
        <link:definition>2413402 - Disclosure - Stock Repurchases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockRepurchasesTables" roleURI="http://www.creditacceptance.com/role/StockRepurchasesTables">
        <link:definition>2313301 - Disclosure - Stock Repurchases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsSubsequentEvents" roleURI="http://www.creditacceptance.com/role/SubsequentEventsSubsequentEvents">
        <link:definition>2116100 - Disclosure - Subsequent Events Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsSubsequentEventsDetails" roleURI="http://www.creditacceptance.com/role/SubsequentEventsSubsequentEventsDetails">
        <link:definition>2416402 - Disclosure - Subsequent Events Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsTables" roleURI="http://www.creditacceptance.com/role/SubsequentEventsTables">
        <link:definition>2316301 - Disclosure - Subsequent Events (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://www.creditacceptance.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2103100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesNarrativeDetails" roleURI="http://www.creditacceptance.com/role/SummaryOfSignificantAccountingPoliciesNarrativeDetails">
        <link:definition>2403402 - Disclosure - Summary of Significant Accounting Policies (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicy" roleURI="http://www.creditacceptance.com/role/SummaryOfSignificantAccountingPoliciesPolicy">
        <link:definition>2203201 - Disclosure - Summary of Significant Accounting Policies (Policy)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesScheduleOfTrustAssetsAndReinsuranceLiabilitiesDetails" roleURI="http://www.creditacceptance.com/role/SummaryOfSignificantAccountingPoliciesScheduleOfTrustAssetsAndReinsuranceLiabilitiesDetails">
        <link:definition>2403403 - Disclosure - Summary of Significant Accounting Policies (Schedule of Trust Assets and Reinsurance Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="cacc_AcceleratedPaymentsOfDealerHoldback" name="AcceleratedPaymentsOfDealerHoldback" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cacc_AdvancesToDealers" name="AdvancesToDealers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_Cacc_FivePercentCapInterestRateMember" name="Cacc_FivePercentCapInterestRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_CertainLoansAcquiredInTransferAccountedForAsLoansAccretableYieldReclassificationsFromNonaccretableDifferenceForecastChanges" name="CertainLoansAcquiredInTransferAccountedForAsLoansAccretableYieldReclassificationsFromNonaccretableDifferenceForecastChanges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cacc_CertainLoansAcquiredInTransferAccountedForAsLoansAccretableYieldTransfers" name="CertainLoansAcquiredInTransferAccountedForAsLoansAccretableYieldTransfers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_ClaimsReserveMember" name="ClaimsReserveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_DealerLoansMember" name="DealerLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_DebtInstrumentAmountAvailableForBorrowing" name="DebtInstrumentAmountAvailableForBorrowing" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cacc_DebtInstrumentCovenantNetIncomeForPastTwoQuarters" name="DebtInstrumentCovenantNetIncomeForPastTwoQuarters" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cacc_Debtfinancingclosedate" name="Debtfinancingclosedate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:dateItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_DescriptionOfBusinessAbstract" name="DescriptionOfBusinessAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_DescriptionOfBusinessLineItems" name="DescriptionOfBusinessLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_DescriptionOfBusinessTable" name="DescriptionOfBusinessTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_DilutiveSecuritiesRestrictedStockAndRestrictedStockUnits" name="DilutiveSecuritiesRestrictedStockAndRestrictedStockUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_FivePointFivePercentCapInterestRateAdditionalMember" name="FivePointFivePercentCapInterestRateAdditionalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_FivePointFivePercentCapInterestRateMember" name="FivePointFivePercentCapInterestRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_FivePointFivePercentCapInterestRateOriginalMember" name="FivePointFivePercentCapInterestRateOriginalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_InterestRateContractsInceptionDate" name="InterestRateContractsInceptionDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:dateItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_InterestRateContractsMaturityDate" name="InterestRateContractsMaturityDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:dateItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoanPoolPerformanceLessThanInitialEstimatesMember" name="LoanPoolPerformanceLessThanInitialEstimatesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoanPoolPerformanceMeetsOrExceedsInitialEstimatesMember" name="LoanPoolPerformanceMeetsOrExceedsInitialEstimatesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_LoansAndLeasesReceivableTransfers" name="LoansAndLeasesReceivableTransfers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansAxis" name="LoansAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansDomain" name="LoansDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2008Member" name="LoansOriginatingIn2008Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2009Member" name="LoansOriginatingIn2009Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2010Member" name="LoansOriginatingIn2010Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2011Member" name="LoansOriginatingIn2011Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2012Member" name="LoansOriginatingIn2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2013Member" name="LoansOriginatingIn2013Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2014Member" name="LoansOriginatingIn2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2016Member" name="LoansOriginatingIn2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingIn2017Member" name="LoansOriginatingIn2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_LoansOriginatingin2015Member" name="LoansOriginatingin2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_LoansReceivableContractualNetCashFlowsAtAssignment" name="LoansReceivableContractualNetCashFlowsAtAssignment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cacc_LoansReceivableExpectedNetCashFlowsAtAssignment" name="LoansReceivableExpectedNetCashFlowsAtAssignment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cacc_LoansReceivableFairValueOfNetCashFlowsAtAssignment" name="LoansReceivableFairValueOfNetCashFlowsAtAssignment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cacc_LoansReceivableForecastedCollectionPercentage" name="LoansReceivableForecastedCollectionPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cacc_LoansReceivableInitialForecastedCollectionPercentage" name="LoansReceivableInitialForecastedCollectionPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cacc_LoansReceivableVarianceInForecastedCollectionPercentageFromPriorQuarterEnded" name="LoansReceivableVarianceInForecastedCollectionPercentageFromPriorQuarterEnded" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cacc_LoansReceivableVarianceInForecastedCollectionPercentageFromPriorYearEnded" name="LoansReceivableVarianceInForecastedCollectionPercentageFromPriorYearEnded" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage" name="LoansReceivableVarianceInInitialForecastedCollectionPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cacc_LoansandLeasesReceivableNetRollForward" name="LoansandLeasesReceivableNetRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_MaximumHedgingReserve" name="MaximumHedgingReserve" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cacc_MonthlyServicingFeePerFinancing" name="MonthlyServicingFeePerFinancing" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_NetBookValueOfLoansPledgedAsCollateral" name="NetBookValueOfLoansPledgedAsCollateral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cacc_NewConsumerLoanAssignments" name="NewConsumerLoanAssignments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cacc_NumberOfBusinessPrograms" name="NumberOfBusinessPrograms" nillable="true" substitutionGroup="xbrli:item" type="xbrli:positiveIntegerItemType" xbrli:periodType="instant" />
  <xsd:element id="cacc_NumberOfConsumerLoansAssignedToReceiveAcceleratedDealerHoldbackPayment" name="NumberOfConsumerLoansAssignedToReceiveAcceleratedDealerHoldbackPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:positiveIntegerItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_NumberOfConsumersRequiredToGroupAdvances" name="NumberOfConsumersRequiredToGroupAdvances" nillable="true" substitutionGroup="xbrli:item" type="xbrli:positiveIntegerItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_NumberWarehouseFacilities" name="NumberWarehouseFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_NumberofPortfolioSegments" name="NumberofPortfolioSegments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_OpenMarketMember" name="OpenMarketMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_PaymentsForProceedsFromLoansReceivableProgramsAxis" name="PaymentsForProceedsFromLoansReceivableProgramsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_PaymentsForProceedsFromLoansReceivableProgramsDomain" name="PaymentsForProceedsFromLoansReceivableProgramsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PaymentsOfDealerHoldback" name="PaymentsOfDealerHoldback" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cacc_PercentageOfAcceleratedPaymentsOfDealerHoldback" name="PercentageOfAcceleratedPaymentsOfDealerHoldback" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PercentageOfAdvancesToDealers" name="PercentageOfAdvancesToDealers" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PercentageOfCollectionsOnContributedLoans" name="PercentageOfCollectionsOnContributedLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_PercentageOfContractsWithFICOScoreLowerThan650OrNoFICOScoreMember" name="PercentageOfContractsWithFICOScoreLowerThan650OrNoFICOScoreMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PercentageOfDueFromAffiliates" name="PercentageOfDueFromAffiliates" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cacc_PercentageOfNetBookValueOfLoans" name="PercentageOfNetBookValueOfLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PercentageOfNewConsumerLoansInUnitVolume" name="PercentageOfNewConsumerLoansInUnitVolume" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PercentageOfPaymentsOfDealerHoldback" name="PercentageOfPaymentsOfDealerHoldback" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PercentageOfRelatedPartyTransactionRevenuesFromTransaction" name="PercentageOfRelatedPartyTransactionRevenuesFromTransaction" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PercentageOfRevenueFromEnrollmentAndRegistrationFeesInProgram" name="PercentageOfRevenueFromEnrollmentAndRegistrationFeesInProgram" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_Percentageofnewconsumerloansdollarvolume" name="Percentageofnewconsumerloansdollarvolume" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PeriodAfterConsumerLoansWithNoForecastedFutureNetCashFlows" name="PeriodAfterConsumerLoansWithNoForecastedFutureNetCashFlows" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PeriodAfterDeterminationDealerLoanWriteOff" name="PeriodAfterDeterminationDealerLoanWriteOff" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_PeriodAfterDeterminationPurchasedLoanWriteOff" name="PeriodAfterDeterminationPurchasedLoanWriteOff" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_PortfolioProgramMember" name="PortfolioProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_PurchaseProgramMember" name="PurchaseProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_PurchasedLoansMember" name="PurchasedLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_RestrictedCashAndCashEquivalentsFairValueDisclosure" name="RestrictedCashAndCashEquivalentsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cacc_RestrictedCashAndCashEquivalentsMember" name="RestrictedCashAndCashEquivalentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_RevenueFromEnrollmentAndRegistrationFeesInProgram" name="RevenueFromEnrollmentAndRegistrationFeesInProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfAdditionalInformationRelatedToDebtInstrumentsTableTextBlock" name="ScheduleOfAdditionalInformationRelatedToDebtInstrumentsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfAssetBackedDebtInstrumentsTextBlockTableTextBlock" name="ScheduleOfAssetBackedDebtInstrumentsTextBlockTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfChangesInAccountsNotesLoansAndFinancingReceivableTableTextBlock" name="ScheduleOfChangesInAccountsNotesLoansAndFinancingReceivableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfConsumerLoansForecastedCollectionPercentageTextBlock" name="ScheduleOfConsumerLoansForecastedCollectionPercentageTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfConsumerLoansPerformanceTableTextBlock" name="ScheduleOfConsumerLoansPerformanceTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfNewConsumerLoanAssignmentsTableTextBlock" name="ScheduleOfNewConsumerLoanAssignmentsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfPercentageOfConsumerLoansAssignedBasedOnUnitVolumesTableTextBlock" name="ScheduleOfPercentageOfConsumerLoansAssignedBasedOnUnitVolumesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfReinsuranceActivityTableTextBlock" name="ScheduleOfReinsuranceActivityTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleOfTrustAssetsAndReinsuranceLiabilitiesTableTextBlock" name="ScheduleOfTrustAssetsAndReinsuranceLiabilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ScheduleofPrincipalDebtOutstandingTableTextBlock" name="ScheduleofPrincipalDebtOutstandingTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_SecuredFinancingFairValueDisclosure" name="SecuredFinancingFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cacc_SecuredfinancingsMember" name="SecuredfinancingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_ServiceFeeIncomeAsPercentageOfCollections" name="ServiceFeeIncomeAsPercentageOfCollections" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchasedIncrease" name="StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchasedIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="cacc_StockRepurchasesTextBlock" name="StockRepurchasesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_SummaryOfChangesInAccretableYieldTableTextBlock" name="SummaryOfChangesInAccretableYieldTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TaxWithholdingsForShareBasedCompensationAwardsVestedMember" name="TaxWithholdingsForShareBasedCompensationAwardsVestedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandFifteenOneMember" name="TermAssetBackedSecuredFinancingsTwoThousandFifteenOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandFifteenTwoMember" name="TermAssetBackedSecuredFinancingsTwoThousandFifteenTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandFourteenOneMember" name="TermAssetBackedSecuredFinancingsTwoThousandFourteenOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandFourteenTwoMember" name="TermAssetBackedSecuredFinancingsTwoThousandFourteenTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandSeventeenOneMember" name="TermAssetBackedSecuredFinancingsTwoThousandSeventeenOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandSixteenOneMember" name="TermAssetBackedSecuredFinancingsTwoThousandSixteenOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandSixteenThreeMember" name="TermAssetBackedSecuredFinancingsTwoThousandSixteenThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandSixteenTwoMember" name="TermAssetBackedSecuredFinancingsTwoThousandSixteenTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredFinancingsTwoThousandThirteenOneMember" name="TermAssetBackedSecuredFinancingsTwoThousandThirteenOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TermAssetBackedSecuredfinancingsTwoThousandThirteenTwoMember" name="TermAssetBackedSecuredfinancingsTwoThousandThirteenTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TrustAssetsAndReinsuranceLiabilitiesAxis" name="TrustAssetsAndReinsuranceLiabilitiesAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TrustAssetsAndReinsuranceLiabilitiesDomain" name="TrustAssetsAndReinsuranceLiabilitiesDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TrustAssetsMember" name="TrustAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cacc_TwoThousandSeventeenSeniorNotesMember" name="TwoThousandSeventeenSeniorNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TwoThousandTwentyOneSeniorNotesMember" name="TwoThousandTwentyOneSeniorNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_TwoThousandTwentyThreeSeniorNotesMember" name="TwoThousandTwentyThreeSeniorNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_UnearnedPremiumMember" name="UnearnedPremiumMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_WarehouseFacilitiesMember" name="WarehouseFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_WarehouseFacilityIIMember" name="WarehouseFacilityIIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_WarehouseFacilityIVMember" name="WarehouseFacilityIVMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_WarehouseFacilityVIMember" name="WarehouseFacilityVIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cacc_WarehouseFacilityVMember" name="WarehouseFacilityVMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
