v3.26.1
Cover Page - USD ($)
$ in Billions
12 Months Ended
Jun. 30, 2026
Aug. 21, 2026
Dec. 31, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jun. 30, 2026    
Current Fiscal Year End Date --06-30    
Document Transition Report false    
Entity File Number 001-39888    
Entity Registrant Name Affirm Holdings, Inc.    
Entity Incorporation, State or Country Code NV    
Entity Tax Identification Number 84-2224323    
Entity Address, Address Line One 221 Main Street    
Entity Address, Address Line Two Floor 6    
Entity Address, City or Town San Francisco    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94105    
City Area Code 415    
Local Phone Number 960-1518    
Title of 12(b) Security Class A common stock, par value $0.00001 per share    
Trading Symbol AFRM    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction Flag false    
Entity Shell Company false    
Entity Public Float     $ 20.8
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
The information required by Part III of this Report, to the extent not set forth herein, is incorporated herein by reference from the registrant’s definitive proxy statement relating to the Annual Meeting of Stockholders to be held in 2026, which definitive proxy statement shall be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year to which this Report relates.
   
Amendment Flag false    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2026    
Entity Central Index Key 0001820953    
Class A common stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   296,881,962  
Class B common stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   40,539,294