v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 03, 2026
Document Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-41043  
Entity Registrant Name EXPENSIFY, INC.  
Entity Incorporation, State DE  
Entity Tax Identification Number 27-0239450  
Entity Address, Street 88 Kearny St, Ste 1600  
Entity Address, City San Francisco  
Entity Address, State CA  
Entity Address, Postal Zip Code 94108  
City Area Code (971)  
Local Phone Number 365-3939  
Title of each class Class A Common Stock, par value $0.0001 per share  
Trading Symbol EXFY  
Name of each exchange on which registered NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Central Index Key 0001476840  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Common Class A    
Document Information    
Entity Common Stock, Shares Outstanding   78,936,804
Common Stock, LT10    
Document Information    
Entity Common Stock, Shares Outstanding   4,209,827
Common Stock, LT50    
Document Information    
Entity Common Stock, Shares Outstanding   8,040,033