Norinchukin’s credit RWAs up 31% on early Basel III opt-in

Bank’s standardised charges surge 19-fold following overhaul of models’ scope and parameters

The Norinchukin Bank’s credit risk charges surged 31% on its early adoption of the final Basel III reforms, in a preview of what may await other Japanese banks when implementation becomes mandatory next year.

Credit risk-weighted assets (RWAs) produced by the standardised approach (SA) went from ¥254 billion ($1.8 billion) to ¥4.87 trillion – a 19-fold increase – during the first three months of 2023, the bank’s financial fourth quarter.

Contextually, RWAs under the internal ratings-based

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