Cover Page - shares	9 Months Ended
	Sep. 30, 2023	Nov. 02, 2023
Cover [Abstract]
Document Type	10-Q
Document Period End Date	Sep. 30, 2023
Entity File Number	0-7818
Entity Registrant Name	INDEPENDENT BANK CORPORATION
Entity Incorporation, State or Country Code	MI
Entity Tax Identification Number	38-2032782
Entity Address, Address Line One	4200 East Beltline
Entity Address, City or Town	Grand Rapids
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	49525
City Area Code	616
Local Phone Number	527-5820
Title of 12(b) Security	Common stock, no par value
Trading Symbol	IBCP
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		20,840,318
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2023
Entity Central Index Key	0000039311
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false