Key facts
- European Union banks have historically used internal credit risk models to determine a significant portion of their capital requirements.
- The Basel III framework's introduction of an output floor is reducing the reliance on these internal ratings-based (IRB) models.
- This regulatory shift favors standardized, regulator-set metrics over internal modeling for capital calculations.
- Some proponents of the IRB approach acknowledge that the models need to be re-evaluated or adjusted.
For years, banks within the European Union have predominantly utilized internal credit risk models to calculate the majority of their capital requirements. However, the era of these internal ratings-based (IRB) models may be drawing to a close. The implementation of an output floor under the Basel III regulatory framework is diminishing the popularity and effectiveness of these internal models. While some industry participants lament the shift towards more standardized, regulator-set metrics for determining capital levels, even some supporters of the IRB approach concede that the system needs to be re-evaluated or adjusted in light of the new regulations.