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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnotes to this Form 4."}],"balance_after":27302.7,"source":{"system":"sec-edgar","filing":"0000885550-26-000039","document":"wk-form4_1770843769.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555026000039/wk-form4_1770843769.xml","form_type":"4"}},{"id":910669,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-02-11T21:02:51.000Z","date":"2026-02-09","kind":"exercise","planned":false,"acquired":true,"shares":3000,"price":333.94,"value":1001820.0,"ownership":{"direct":true},"balance_after":30302.7,"source":{"system":"sec-edgar","filing":"0000885550-26-000039","document":"wk-form4_1770843769.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555026000039/wk-form4_1770843769.xml","form_type":"4"}},{"id":923074,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-02-03T21:09:37.000Z","date":"2026-01-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":695.9,"price":498.24,"value":346725.216,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld to satisfy tax withholding obligations in conjunction with the vesting and settlement of restricted stock units to shares of common stock."}],"balance_after":27302.7,"source":{"system":"sec-edgar","filing":"0000885550-26-000021","document":"wk-form4_1770152974.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555026000021/wk-form4_1770152974.xml","form_type":"4"}},{"id":1294856,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-01-27T21:04:25.000Z","date":"2025-01-23","kind":"tax_withholding","planned":false,"acquired":false,"shares":159.45,"price":524.14,"value":83574.123,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld to satisfy tax withholding obligations in conjunction with the vesting and settlement of restricted stock units to shares of common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 22,583 unvested restricted stock units that were granted under the Company's Incentive Compensation Plan. Each restricted stock unit represents and has a value equal to one share of\ncommon stock of Credit Acceptance Corporation."}],"balance_after":27998.55,"source":{"system":"sec-edgar","filing":"0000885550-25-000006","document":"wk-form4_1738011857.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555025000006/wk-form4_1738011857.xml","form_type":"4"}},{"id":1342076,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2024-12-05T21:12:51.000Z","date":"2024-12-03","kind":"grant","planned":false,"acquired":true,"shares":22583,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These restricted stock units, which vest over a ten-year period, are intended to provide incentive compensation to the reporting person for 2025 through 2034, with no additional equity awards anticipated to be granted to the reporting person prior to the end of the ten-year period except in certain circumstances including significant changes in performance, responsibility, or market conditions."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 23,183 unvested restricted stock units that were granted under the Company's Incentive Compensation Plan. Each restricted stock unit represents and has a value equal to one share of common\nstock of Credit Acceptance Corporation."}],"balance_after":28158,"source":{"system":"sec-edgar","filing":"0000885550-24-000133","document":"wk-form4_1733433161.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555024000133/wk-form4_1733433161.xml","form_type":"4"}},{"id":1671407,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2024-01-25T21:10:49.000Z","date":"2024-01-23","kind":"grant","planned":false,"acquired":true,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 600 unvested restricted stock units that were granted under the Company's Incentive Compensation Plan. Each restricted stock unit represents and has a value equal to one share of common stock of Credit Acceptance Corporation. 600 shares will vest and be distributed on January 23, 2025, which is the first anniversary of the date on which the restricted stock units were granted."}],"balance_after":5575,"source":{"system":"sec-edgar","filing":"0000885550-24-000013","document":"wk-form4_1706217037.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555024000013/wk-form4_1706217037.xml","form_type":"4"}},{"id":2039131,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP - Finance & Accounting"}}],"security":"Common Stock","published_at":"2023-02-01T21:11:41.000Z","date":"2023-01-30","kind":"tax_withholding","acquired":false,"shares":925,"price":448.75,"value":415093.75,"ownership":{"direct":true},"balance_after":4975,"source":{"system":"sec-edgar","filing":"0000885550-23-000011","document":"wf-form4_167528588568172.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555023000011/wf-form4_167528588568172.xml","form_type":"4"}},{"id":2580349,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP - Finance & Accounting"}}],"security":"Common Stock","published_at":"2021-09-03T20:12:16.000Z","date":"2021-09-02","kind":"sale","acquired":false,"shares":1769,"price":654.92,"value":1158553.48,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $654.27 to $655.13, inclusive. The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnotes to this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 3,400 vested restricted stock units that were granted under the Company's Incentive Compensation Plan."}],"balance_after":5900,"source":{"system":"sec-edgar","filing":"0000885550-21-000109","document":"wf-form4_163069991403473.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000109/wf-form4_163069991403473.xml","form_type":"4"}},{"id":2580348,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP - Finance & Accounting"}}],"security":"Common Stock","published_at":"2021-09-03T20:12:16.000Z","date":"2021-09-02","kind":"sale","acquired":false,"shares":231,"price":653.44,"value":150944.64,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $653.06 to $653.82, inclusive. The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnotes to this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 3,400 vested restricted stock units that were granted under the Company's Incentive Compensation Plan."}],"balance_after":7669,"source":{"system":"sec-edgar","filing":"0000885550-21-000109","document":"wf-form4_163069991403473.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000109/wf-form4_163069991403473.xml","form_type":"4"}},{"id":2627564,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP - Finance & Accounting"}}],"security":"Employee Stock Option (right to buy)","published_at":"2021-07-22T20:12:05.000Z","date":"2021-07-21","kind":"grant","acquired":true,"shares":2250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F4","text":"The option was granted on April 28, 2021 and was subject to shareholder approval of an amendment to the Company's Amended and Restated Incentive Compensation Plan. Shareholder approval was received at the annual meeting of shareholders on July 21, 2021."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option, representing a right to purchase 2,250 shares, is exercisable in four equal annual installments beginning on April 28, 2022, which is the first anniversary of the date on which the option was granted."}],"balance_after":2250,"derivative":{"exercise_price":390.39,"expiration_date":"2027-04-28","underlying":"Common Stock","underlying_shares":2250},"source":{"system":"sec-edgar","filing":"0000885550-21-000090","document":"wf-form4_162698470142081.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000090/wf-form4_162698470142081.xml","form_type":"4"}},{"id":2627563,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35277,"kind":"person","name":"Martin Jay D","position":1,"cik":"0001859812","reported_name":"Martin Jay D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP - Finance & Accounting"}}],"security":"Employee Stock Option (right to buy)","published_at":"2021-07-22T20:12:05.000Z","date":"2021-07-21","kind":"grant","acquired":true,"shares":19500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F2","text":"The option was granted on December 30, 2020 and was subject to shareholder approval of an amendment to the Company's Amended and Restated Incentive Compensation Plan. Shareholder approval was received at the annual meeting of shareholders on July 21, 2021."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option, representing a right to purchase 19,500 shares, is exercisable in four equal annual installments beginning on December 30, 2021, which is the first anniversary of the date on which the option was granted."}],"balance_after":19500,"derivative":{"exercise_price":333.94,"expiration_date":"2026-12-30","underlying":"Common Stock","underlying_shares":19500},"source":{"system":"sec-edgar","filing":"0000885550-21-000090","document":"wf-form4_162698470142081.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000090/wf-form4_162698470142081.xml","form_type":"4"}}]}