Regulatory Matters (Tables)

12 Months Ended

Sep. 30, 2024

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

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The following tables compare the Bank’s actual capital amounts at September 30, 2024 and 2023 to its minimum regulatory capital requirements and "Well Capitalized" regulatory capital at those dates (dollars in thousands):

	Actual				Regulatory Minimum To Be "Adequately Capitalized"				Regulatory Minimum To Be "Well Capitalized" Under Prompt Corrective Action Provisions
September 30, 2024	Amount		Ratio		Amount		Ratio		Amount		Ratio
Leverage Capital Ratio:
Tier 1 capital	$	229,206	12.0	%	$	76,319	4.0	%	$	95,399	5.0	%
Risk-based Capital Ratios:
CET1	229,206		18.0		57,318		4.5		82,793		6.5
Tier 1 capital	229,206		18.0		76,424		6.0		101,899		8.0
Total capital	245,152		19.3		101,899		8.0		127,374		10.0

September 30, 2023
Leverage Capital Ratio:
Tier 1 capital	$	218,749	12.0	%	$	72,983	4.0	%	$	91,229	5.0	%
Risk-based Capital Ratios:
CET1	218,749		18.0		54,549		4.5		78,792		6.5
Tier 1 capital	218,749		18.0		72,731		6.0		96,975		8.0
Total capital	233,914		19.3		96,975		8.0		121,219		10.0

The following table presents for informational purposes the regulatory capital ratios for Timberland Bancorp at September 30, 2024 and 2023 assuming that Timberland Bancorp was subject to regulatory guidelines for bank holding companies with $3.0 billion or more in assets (dollars in thousands):

	2024				2023
	Amount		Ratio		Amount		Ratio
Leverage Capital Ratio:
Tier 1 capital	$	231,092	12.1	%	$	219,851	12.1	%
Risk-based Capital Ratios:
CET1	231,092		18.1		219,851		18.1
Tier 1 capital	231,092		18.1		219,851		18.1
Total capital	247,044		19.4		235,023		19.4