Cover - shares	6 Months Ended
	Jun. 30, 2023	Aug. 02, 2023
Entity Addresses [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
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	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Central Index Key	0001821850
Current Fiscal Year End Date	--12-31
Fiscal Year Focus	2023
Fiscal Period Focus	Q2
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		85,882,302
Warrants
Entity Addresses [Line Items]
Title of 12(b) Security	Warrants, each whole warrant is 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		44,973,227