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Nature of Business and Summary of Significant Accounting Policies (Policies) | 9 Months Ended
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Sep. 30, 2025
Accounting Policies [Abstract] |
Nature of Business | Nature of Business – ACV Auctions Inc. (the "Company" or "ACV") operates in one industry segment, providing a wholesale auction marketplace (the “Marketplace” or “Marketplace Platform”) to facilitate business-to-business used vehicle sales between a selling dealership (“Seller”) and a buying dealership (“Buyer”). The Marketplace encompasses the digital marketplaces, remarketing centers, data services, and data and technology. Customers using the Marketplace are licensed automotive dealerships or other commercial automotive enterprises. At the election of the customer purchasing a vehicle, the Company can arrange third-party transportation services for the delivery of the purchased vehicle through its wholly owned subsidiary, ACV Transportation LLC. The Company can also provide the customer financing for the purchased vehicle through its wholly owned subsidiary, ACV Capital LLC (“ACV Capital”). ACV also provides data services that offer insights into the condition and value of used vehicles for transactions both on and off the Company's Marketplace, which help dealerships, their end customers, and commercial partners make more informed decisions to transact with confidence and efficiency. Customers using data services are licensed automotive dealerships or other commercial automotive enterprises. Services are primarily provided in the United States and certain data services are also provided internationally. Services are supported by the Company’s operations which are primarily in North America and India.
Basis of Consolidation | Basis of Consolidation – The condensed consolidated financial statements include the accounts of ACV Auctions Inc. and all of its controlled subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Basis of Preparation | Basis of Preparation – The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and pursuant to the applicable rules and regulations of the Securities and Exchange Commission ("SEC"). The Company has condensed or omitted certain information and notes normally included in complete annual financial statements prepared in accordance with GAAP. These financial statements have been prepared on the same basis as the Company's annual financial statements and, in the opinion of management, reflect all adjustments, consisting only of normal recurring adjustments, which are necessary for the fair statement of the Company's financial information. The unaudited interim condensed consolidated financial statements should therefore be read in conjunction with the audited consolidated financial statements and accompanying notes contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2024, as filed with the SEC on February 19, 2025 (the "Annual Report"). Any reference in these notes to applicable guidance is meant to refer to the authoritative GAAP as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) of the Financial Accounting Standards Board (“FASB”).
Recent Accounting Pronouncements | Recent Accounting Pronouncements – The following table provides a description of accounting standards that are not yet adopted that could have an impact to the consolidated financial statements upon adoption.
Accounting Standard Update | Description | Required date of adoption | Effect on consolidated financial statements
Accounting Standards Not Yet Adopted
Improvements to Income Tax Disclosures (ASU 2023-09) | The guidance enhances the transparency and decision usefulness of income tax disclosures. | December 31, 2025 | The Company will adopt the standard prospectively as of December 31, 2025. ASU 2023-09 requires additional tax related disclosures and is not expected to have a material impact on the Company's consolidated financial statements.
Reporting Comprehensive Income—Expense Disaggregation Disclosures (ASU 2024-03) | This guidance enhances the disaggregated disclosure of income statement expenses. | December 31, 2027 | The Company is currently evaluating the impact this guidance may have on the consolidated financial statements.
Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software (ASU 2025-06) | This update modernizes the guidance to reflect the software development approaches currently used. | December 31, 2028 | The Company is currently evaluating the impact this guidance may have on the consolidated financial statements.
Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets (ASU 2025-05) | This update provides a practical expedient that assumes that current conditions as of the balance sheet date do not change for the remaining life of an asset when developing reasonable and supportable forecasts as part of estimating expected credit losses | December 31, 2026 | The Company is currently evaluating the impact this guidance may have on the consolidated financial statements and whether the Company will adopt this practical expedient.

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483426/235-10-50-4 + Details
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- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483426/235-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-1 + Details
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