Quarterly report pursuant to Section 13 or 15(d)


Cover - shares
9 Months Ended
Sep. 30, 2021
Nov. 08, 2021
Entity Addresses [Line Items]    
Document Type 10-Q/A  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2021  
Document Transition Report false  
Entity File Number 001-39739  
Entity Registrant Name Sunlight Financial Holdings Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 85-2599566  
Entity Address, Address Line One 101 North Tryon Street  
Entity Address, Address Line Two Suite 1000  
Entity Address, City or Town Charlotte  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 28246  
City Area Code 888  
Local Phone Number 315-0822  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Central Index Key 0001821850  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Class A common stock    
Entity Addresses [Line Items]    
Title of 12(b) Security Class A Common Stock, par value $0.0001 per share  
Trading Symbol SUNL  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   84,815,297
Entity Addresses [Line Items]    
Title of 12(b) Security Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share  
Trading Symbol SUNL.WS  
Security Exchange Name NYSE  
Class C common stock    
Entity Addresses [Line Items]    
Entity Common Stock, Shares Outstanding   47,595,455