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Regulatory Matters (Tables)
12 Months Ended
Sep. 30, 2020
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, 2020 and 2019 to its minimum regulatory capital requirements and "Well Capitalized" regulatory capital at those dates (dollars in thousands):
September 30, 2020ActualRegulatory Minimum To Be "Adequately Capitalized"Regulatory MinimumTo Be "Well Capitalized" Under Prompt Corrective Action Provisions
AmountRatioAmountRatioAmountRatio
Leverage Capital Ratio:
Tier 1 capital$168,937 11.1 %$60,993 4.0 %$76,241 5.0 %
Risk-based Capital Ratios:
Common equity Tier 1 capital168,937 19.7 38,504 4.5 55,618 6.5 
Tier 1 capital168,937 19.7 51,339 6.0 68,452 8.0 
Total capital179,671 21.0 68,452 8.0 85,566 10.0 
September 30, 2019ActualRegulatory Minimum To Be "Adequately Capitalized"Regulatory Minimum To Be "Well Capitalized" Under Prompt Corrective Action Provisions
AmountRatioAmountRatioAmountRatio
Leverage Capital Ratio:
Tier 1 capital$152,926 12.5 %$49,044 4.0 %$61,305 5.0 %
Risk-based Capital Ratios:
Common equity Tier 1 capital152,926 18.1 38,019 4.5 54,916 6.5 
Tier 1 capital152,926 18.1 50,692 6.0 67,589 8.0 
Total capital162,857 19.3 67,589 8.0 84,487 10.0 
The following table presents the regulatory capital ratios for Timberland Bancorp at September 30, 2020 and 2019 assuming Timberland Bancorp was subject to regulatory guidelines for bank holding companies with $3.0 billion or more in assets (dollars in thousands):
20202019
AmountRatioAmountRatio
Leverage Capital Ratio:
Tier 1 capital$172,000 11.3 %$155,468 12.7 %
Risk-based Capital Ratios:
Common equity Tier 1 capital172,000 20.1 155,468 18.4 
Tier 1 capital172,000 20.1 155,468 18.4 
Total capital182,805 21.3 165,399 19.6