UK PRA near-final rules on retiring the refined methodology to Pillar 2A capital framework

The UK Prudential Regulation Authority (PRA) has published near-final policy statement PS18/25, confirming its intention to retire the refined methodology to Pillar 2A capital requirements. This decision follows the 2024 consultation and is aligned with the forthcoming implementation of the Basel 3.1 standardised approach to credit risk (CR SA), now scheduled for implementation on 1 January 2027. The PRA concludes that the refined methodology to Pillar 2A, originally introduced to address conservatism in CR SA relative to the Internal Ratings-Based (IRB) approach, is no longer necessary due to improvements in risk sensitivity under Basel 3.1.

Despite mixed feedback from respondents, the PRA maintains that the retirement will simplify the capital framework, reduce operational burdens and better reflect firms' risk profiles. Implementation will take effect from 1 January 2027, aligning with the extended implementation date of Basel 3.1. Final policy materials are expected in Q1 2026, following HM Treasury's revocation of relevant Capital Requirements Regulation (CRR) provisions. Final minor amendments to policies concerning interest rate risk in the banking book (IRRBB) and pension obligation risk have also been published, with implementation deferred to 1 July 2026. The appendices to this near-final policy statement contain the PRA's near-final policy materials regarding the retirement of the refined methodology, as well as final policy materials related to IRRBB and pension obligation risk.

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