Banks gain faster approval for internal model changes
The European Central Bank is streamlining its assessment of changes to banks' internal models for credit risk, shifting from an ex ante to an ex post assessment. This reform, effective from 1 October 2026, aims to make the approval process faster and more predictable while maintaining bank resilience.
A new era for model changes
From 1 October 2026, the ECB will allow banks to implement material changes to their internal credit risk models shortly after submitting a complete application.
This marks a shift from an ex ante to an ex post assessment, making the approval process faster and more predictable.
Banks can now implement model changes quickly without maintaining old and new models in parallel.
This is conditional on a bank's internal control function credibly confirming compliance with regulatory requirements.
Where model changes result in lower risk weights, a floor of 98 percent of current risk weights will be applied to the capital benefit.
This floor can only be lifted after a thorough on-site investigation by the ECB.
Risk-based oversight takes center stage
The reform builds on successful supervisory work, including the ECB's Targeted Review of Internal Models (TRIM) and the European Banking Authority's (EBA) repair programme, which have enhanced model reliability.
This enables a more targeted, risk-based supervisory approach.
Material model changes will no longer automatically trigger on-site investigations, freeing resources to scrutinize higher-risk areas like models with outlier behavior.
Concurrently, the European Banking Authority (EBA) has recalibrated its materiality criteria for internal model changes, reducing the number of changes requiring ECB approval through quantitative thresholds, while maintaining supervisory visibility.
Efficiency meets oversight
This streamlining represents a pragmatic step towards supervisory efficiency, reducing administrative burden for banks and supervisors alike.
While the shift to ex-post assessment is significant, the safeguards and targeted on-site investigations ensure continued resilience.
The reform primarily optimizes existing processes rather than fundamentally altering the supervisory framework.