Most firms have moved beyond impact assessment. The hard work now is documenting judgements, configuring reporting, running credible parallel calculations and securing board confidence before 1 January 2027.

On 19 February 2026, the Prudential Regulation Authority (PRA) published Consultation Paper CP3/26, setting out proposed amendments to the PRA Rulebook to reflect the implementation of HM Treasury's (HMT) Overseas Prudential Requirements Regime (OPRR). Following consultation, the PRA published Policy Statement PS16/26 on 14 July 2026, confirming its final rules.

The PRA has published Policy Statement 15/26, concluding the first phase of a two-stage review of its Pillar 2A methodologies and supporting guidance. This article summarises the impact for firms.

Explore how exposure sub-classifications shape risk weights under the Basel 3.1 real estate framework. Test different scenarios and see how individual factors drive the outcome.

For illustrative and educational purposes only. Not a substitute for formal regulatory analysis.

Regulatory reporting has traditionally been viewed by banks as a necessary but resource-intensive compliance exercise. However, with the introduction of Basel 3.1 and the UK’s Simplified Capital Regime, firms are now presented with a timely opportunity to re-think their approach. Rather than treating regulatory change as a constraint, firms can instead use it as a catalyst for a broader transformation that drives improvements in governance, data quality, systems, and overall operational efficiency.

Basel 3.1-compliant capital stress testing tool

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 outlines the key changes to the calculation of Credit valuation adjustment and counterparty credit risk, as part of the Basel 3.1 final rules (PS1/26).

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 the calculation of own funds requirement for operational 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 outlines the key changes to the calculation of market risk capital requirements 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).

On 20 January 2026, the PRA published PS4/26, finalising SDDT 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 highlights the key changes to the treatment of off-balance sheet items under the standardised approach to credit risk, 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.

Hosted by UK Finance, Katalysys is pleased to announce a training programme, “The Basel Breakthrough: Future-Proofing Regulatory Reporting for 2027”, aimed at equipping banks and financial institutions with the knowledge, tools and strategies to navigate the forthcoming Basel 3.1 reforms.