Document and Entity Information - USD ($)	10 Months Ended
	Dec. 31, 2021	Mar. 30, 2022	Jun. 30, 2021
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2021
Entity File Number	001-40933
Entity Registrant Name	ExcelFin Acquisition Corp.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-2933776
Entity Address, Address Line One	473 Jackson St., Suite 300
Entity Address, City or Town	San Francisco
Entity Address State Or Province	CA
Entity Address, Postal Zip Code	94111
City Area Code	415
Local Phone Number	715-4377
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
ICFR Auditor Attestation Flag	false
Entity Ex Transition Period	false
Entity Shell Company	true
Entity Public Float			$ 0
Entity Central Index Key	0001852749
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Transition Report	true
Auditor Name	Marcum LLP
Auditor Firm ID	688
Auditor Location	Hartford, CT
Units, each consisting of one share of Class A Common Stock and one-half of one Warrant
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one share of Class A common stock and one-half of one redeemable warrant
Trading Symbol	XFINU
Security Exchange Name	NASDAQ
Class A Common Stock
Document Information [Line Items]
Title of 12(b) Security	Class A common stock, $0.0001 par value
Trading Symbol	XFIN
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		23,000,000
Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50
Document Information [Line Items]
Title of 12(b) Security	Redeemable warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50
Trading Symbol	XFINW
Security Exchange Name	NASDAQ
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		5,750,000