Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2021

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Schedule of actual and required capital amounts and ratios

The following table shows the actual and required capital amounts and ratios for 1st Source Corporation and 1st Source Bank as of December 31, 2021 and 2020.

	Actual				Minimum Capital Adequacy				Minimum Capital Adequacy with Capital Buffer				To Be Well Capitalized Under Prompt Corrective Action Provisions
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
2021
Total Capital (to Risk-Weighted Assets):
1st Source Corporation	$	1,034,605	16.76	%	$	493,751	8.00	%	$	648,048	10.50	%	$	617,189	10.00	%
1st Source Bank	969,228		15.71		493,412		8.00		647,603		10.50		616,765		10.00
Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	956,783		15.50		370,313		6.00		524,611		8.50		493,751		8.00
1st Source Bank	891,458		14.45		370,059		6.00		524,250		8.50		493,412		8.00
Common Equity Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	846,573		13.72		277,735		4.50		432,032		7.00		401,173		6.50
1st Source Bank	838,248		13.59		277,544		4.50		431,735		7.00		400,897		6.50
Tier 1 Capital (to Average Assets):
1st Source Corporation	956,783		11.89		321,925		4.00		N/A		N/A		402,407		5.00
1st Source Bank	891,458		11.08		321,821		4.00		N/A		N/A		402,277		5.00
2020
Total Capital (to Risk-Weighted Assets):
1st Source Corporation	$	966,092	15.99	%	$	483,350	8.00	%	$	634,397	10.50	%	$	604,188	10.00	%
1st Source Bank	881,983		14.59		483,637		8.00		634,774		10.50		604,546		10.00
Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	889,709		14.73		362,513		6.00		513,560		8.50		483,350		8.00
1st Source Bank	805,556		13.32		362,728		6.00		513,864		8.50		483,637		8.00
Common Equity Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	788,884		13.06		271,884		4.50		422,931		7.00		392,722		6.50
1st Source Bank	761,731		12.60		272,046		4.50		423,182		7.00		392,955		6.50
Tier 1 Capital (to Average Assets):
1st Source Corporation	889,709		12.15		292,977		4.00		N/A		N/A		366,221		5.00
1st Source Bank	805,556		11.00		292,959		4.00		N/A		N/A		366,199		5.00