- The European Central Bank (ECB) publishes final revised guide to internal models, covering general topics, credit risk, market risk and counterparty credit risk
- Guide clarifies ECB’s understanding of rules on banks’ internal models
- Revision accounts for climate-related risks, details requirements for common definitions of default, counterparty credit risk, default risk in the trading book and how to return to standardised approach
The Guide explains how the ECB understands the rules banks must follow when they use internal models. Supervisors check compliance with these rules. With the ECB’s permission, banks may use their own internal models to calculate their risk-weighted assets, which reflect the risks banks have on their books and serve as the basis for calculating minimum regulatory requirements.
The revisions to the Guide clarify how banks should go about including material climate-related and environmental risks in their models. They also outline how banks can revert to the standardised approach for calculating risk-weighted assets, which might help support banks’ efforts to simplify their internal model landscapes.
Specifically on credit risk, the Guide helps all banks to move towards a common definition of default and a consistent treatment of “massive disposals” (bulk sales of non-performing loans). The update of the market risk chapter details how to measure default risk in trading book positions. The revised Guide also provides clarifications regarding counterparty credit risk, which is the risk that the counterparty to a transaction could default. Further information can be found under Frequently Asked Questions.