On 20 January 2026, the PRA published PS1/26, finalising Basel 3.1 rules and related policy materials. The package largely confirms the near-final policy, with minor clarifications. This article provides an overview of the final rules. This article provides an overview of the final UK Basel 3.1 rules.

This article highlights the key changes to real estate exposures under the standardised approach to credit risk, as set out in the final Basel 3.1 rules (PS1/26).

This article highlights the key changes to exposures to corporates under the standardised approach to credit risk, as set out in the final Basel 3.1 rules (PS1/26).

This article highlights the key changes to the retail exposure class under the standardised approach to credit risk, as set out in the final Basel 3.1 rules (PS1/26).

This article outlines the changes relating to exposures to institutions under the standardised approach of credit risk, as part of the Basel 3.1 final rules (PS1/26).

This article highlights the key changes to exposures and default under the standardised approach to credit risk, as set out in the final Basel 3.1 rules (PS1/26).

This article outlines the reporting changes, as set out in the final Basel 3.1 rules (PS1/26).

Katalysys recently hosted a roundtable in collaboration with UK Finance and representatives from the PRA, where we discussed the practical challenges firms are facing in preparing for implementation. Based on those discussions and our ongoing work supporting several institutions with Basel 3.1 readiness, we have produced a white paper focusing on the key areas of implementation that carry the greatest risk.

As part of PS9/24, the PRA announced an off-cycle review of Pillar 2 capital requirements to address double-counting, rebase Pillar 2A, and mitigate unintended impacts from changes in Pillar 1 RWAs. Although delayed, the process has now resumed with revised reference dates. Firms must provide specified information as at 31 December 2025, with submissions due by 31 March 2026.

This article outlines the changes to exposures to MDBs under the standardised approach of credit risk, as part of UK’s implementation of Basel 3.1 (PS9/24).

This article provides an overview of the near-final rules regarding the off-balance sheet items under the standardised approach, as part of the UK's implementation of Basel 3.1 (PS9/24).

On 12 September 2024, the Prudential Regulation Authority (PRA) published the second part of its near-final rules on the implementation of Basel 3.1 standards through Policy Statement 9/24 (PS9/24). This article focuses on the key changes in comparison to the PRA’s earlier consultation paper(s), in each of the major risk areas.