Cover - shares	9 Months Ended
	Sep. 30, 2022	Nov. 14, 2022
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-38633
Entity Registrant Name	BM Technologies, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-3410369
Entity Address, Address Line One	201 King of Prussia Road, Suite 350
Entity Address, City or Town	Wayne
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19087
City Area Code	877
Local Phone Number	327-9515
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
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		12,238,447
Entity Central Index Key	0001725872
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock
Trading Symbol	BMTX
Security Exchange Name	NYSEAMER
Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share
Entity Information [Line Items]
Title of 12(b) Security	Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share
Trading Symbol	BMTX-WT
Security Exchange Name	NYSEAMER