Komori
Disclosure8386The Hyakujushi Bank,Ltd.Banks

Changes to the Calculation Method for the Equity Ratio

The calculation method for the capital adequacy ratio will change from the standardized approach to the foundation internal ratings-based approach for credit risk, and from ILM=1 to a method based on internal loss data for operational risk. The change will apply from the calculation as of the end of March 2026.

Worth reading
56In focus
Scored from 5 of 6 sections
Direction
Neutral
Direction inferred from the company’s description.
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—
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Wording
Definitive
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Decision and Details

Change in the calculation method for the capital adequacy ratio

Decision31 March 2026
Period CoveredCalculations of the capital adequacy ratio as of the end of March 2026 and thereafter
ImplementationApplication from the calculation as of the end of March 2026 (scheduled start of application)
Going forwardThe ratio is scheduled to be disclosed in mid-May 2026
Reason

To use internal data to calculate credit risk and operational risk more precisely and reflect changes in risk more appropriately in the capital adequacy ratio. To enhance the risk management framework and improve soundness, transparency and services.

Decision and Details
ItemDetails
Matter CoveredChange in the calculation method for the capital adequacy ratio
Decision Date31 March 2026
Implementation DateApplication from the calculation as of the end of March 2026 (scheduled start of application)
Period CoveredCalculations of the capital adequacy ratio as of the end of March 2026 and thereafter
ReasonTo use internal data to calculate credit risk and operational risk more precisely and reflect changes in risk more appropriately in the capital adequacy ratio. To enhance the risk management framework and improve soundness, transparency and services.
Future plansThe ratio is scheduled to be disclosed in mid-May 2026
Items this document does not state (6)
Decision-Making BodyAmountQuantity / scaleImpact on Business PerformanceGoverning RuleRelated previous disclosures

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

To use internal data to calculate credit and operational risk more precisely and appropriately reflect changes in risk in the capital adequacy ratio. The change is also intended to enhance the risk management framework and improve the bank’s soundness, transparency and customer services.

How to read this page

This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Changes to the Calculation Method for the Equity Ratio | The Hyakujushi Bank,Ltd. (8386) timely disclosure | Komori