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Minimum Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2023

Banking Regulation, Risk-Based Information [Abstract]

Summary of compliance with regulatory capital requirements

Our actual capital amounts and ratios are also presented in the table.

			Actual												Minimum Capital Requirement												Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
			Amount						Ratio						Amount						Ratio						Amount						Ratio
December 31, 2023
Common equity Tier 1 capital to risk weighted assets
Isabella Bank			$	178,316					12.48		%				$	100,043					7.00		%				$	92,897					6.50		%
Consolidated			180,014						12.54		%				100,449						7.00		%				N/A						N/A
Tier 1 capital to risk weighted assets
Isabella Bank			178,316						12.48		%				121,481						8.50		%				114,335						8.00		%
Consolidated			180,014						12.54		%				121,973						8.50		%				N/A						N/A
Total capital to risk weighted assets
Isabella Bank			191,739						13.42		%				150,065						10.50		%				142,919						10.00		%
Consolidated			222,772						15.52		%				150,673						10.50		%				N/A						N/A
Tier 1 capital to average assets
Isabella Bank			178,316						8.71		%				81,935						4.00		%				102,419						5.00		%
Consolidated			180,014						8.76		%				82,154						4.00		%				N/A						N/A

			Actual												Minimum Capital Requirement												Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
			Amount						Ratio						Amount						Ratio						Amount						Ratio
December 31, 2022
Common equity Tier 1 capital to risk weighted assets
Isabella Bank			$	190,060					14.07		%				$	94,565					7.00		%				$	87,811					6.50		%
Consolidated			175,112						12.91		%				94,948						7.00		%				N/A						N/A
Tier 1 capital to risk weighted assets
Isabella Bank			190,060						14.07		%				114,829						8.50		%				108,075						8.00		%
Consolidated			175,112						12.91		%				115,295						8.50		%				N/A						N/A
Total capital to risk weighted assets
Isabella Bank			199,910						14.80		%				141,848						10.50		%				135,093						10.00		%
Consolidated			214,207						15.79		%				142,423						10.50		%				N/A						N/A
Tier 1 capital to average assets
Isabella Bank			190,060						9.36		%				81,181						4.00		%				101,476						5.00		%
Consolidated			175,112						8.61		%				81,392						4.00		%				N/A						N/A

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- References

No definition available.

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- Definition

Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480696/942-505-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B

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