Regulatory Matters (Tables)

12 Months Ended

Jun. 30, 2026

Regulatory Matters [Abstract]

Compliance with Regulatory Capital Requirements under Banking Regulations




																			To be well
																			capitalized under
											For capital								prompt corrective								Capital conservation
(Dollars in thousands)			Actual								adequacy purposes								action provisions								buffer
Greene County Bancorp, Inc.			Amount				Ratio				Amount				Ratio				Amount				Ratio				Actual				Required
As of June 30, 2026:
Total risk-based capital		$	343,112				17.9	%		$	153,618				8.0	%		$	192,023				10.0	%			9.87	%			2.50	%
Tier 1 risk-based capital			289,314				15.1				115,214				6.0				153,618				8.0				9.07				2.50
Common equity tier 1 capital			289,314				15.1				86,410				4.5				124,815				6.5				10.57				2.50
Tier 1 leverage ratio			289,314				9.4				123,301				4.0				154,126				5.0				5.39				2.50

As of June 30, 2025:
Total risk-based capital		$	324,323				18.4	%		$	141,308				8.0	%		$	176,636				10.0	%			10.36	%			2.50	%
Tier 1 risk-based capital			252,373				14.3				105,981				6.0				141,308				8.0				8.29				2.50
Common equity tier 1 capital			252,373				14.3				79,486				4.5				114,813				6.5				9.79				2.50
Tier 1 leverage ratio			252,373				8.6				117,627				4.0				147,034				5.0				4.58				2.50

The Bank of Greene County
As of June 30, 2026:
Total risk-based capital		$	328,258				17.1	%		$	153,615				8.0	%		$	192,018				10.0	%			9.10	%			2.50	%
Tier 1 risk-based capital			304,439				15.9				115,211				6.0				153,615				8.0				9.86				2.50
Common equity tier 1 capital			304,439				15.9				86,408				4.5				124,812				6.5				11.36				2.50
Tier 1 leverage ratio			304,439				9.9				123,300				4.0				154,125				5.0				5.88				2.50

As of June 30, 2025:
Total risk-based capital		$	293,952				16.6	%		$	141,305				8.0	%		$	176,632				10.0	%			8.64	%			2.50	%
Tier 1 risk-based capital			271,869				15.4				105,979				6.0				141,305				8.0				9.39				2.50
Common equity tier 1 capital			271,869				15.4				79,484				4.5				114,811				6.5				10.89				2.50
Tier 1 leverage ratio			271,869				9.2				117,646				4.0				147,057				5.0				5.24				2.50




Greene County Commercial Bank
As of June 30, 2026:
Total risk-based capital		$	136,943				51.3	%		$	21,365				8.0	%		$	26,706				10.0	%			43.28	%			2.50	%
Tier 1 risk-based capital			136,943				51.3				16,024				6.0				21,365				8.0				45.28				2.50
Common equity tier 1 capital			136,943				51.3				12,018				4.5				17,359				6.5				46.78				2.50
Tier 1 leverage ratio			136,943				10.1				54,484				4.0				68,105				5.0				6.05				2.50


As of June 30, 2025:
Total risk-based capital		$	122,243				46.9	%		$	20,871				8.0	%		$	26,089				10.0	%			38.86	%			2.50	%
Tier 1 risk-based capital			122,243				46.9				15,654				6.0				20,871				8.0				40.86				2.50
Common equity tier 1 capital			122,243				46.9				11740				4.5				16,958				6.5				42.36				2.50
Tier 1 leverage ratio			122,243				9.1				53,543				4.0				66,929				5.0				5.13				2.50