EBA Publishes RWA Assessment as the Next Step in Improving Consistency of Internal Model Outcomes

The European Banking Authority (EBA) has published two reports on the consistency of Risk-Weighted Assets (RWAs) across large EU institutions for large corporate, sovereign and institutions’ Internal Ratings-Based (IRB) portfolios (collectively referred to as “low default portfolios”, or LDP). The LDP analysis explains how much of the variability in RWAs is led by difference in riskiness (namely, idiosyncratic portfolio features), and tries to identify residual drivers that are linked to banks’ practices. The CCR benchmarking report considers the calculation of counterparty credit risk (CCR) exposures under the Internal Model Method (IMM) and the credit value adjustments (CVA) according to the advanced approach (ACVA).

The reports summarize the findings obtained from two benchmarking exercises aimed at improving the comparability of EU banks’ RWAs. A key finding is that around 75% of the observed difference in global charge (GC) levels across institutions could be explained by the proportion of defaulted exposures in the portfolio and the portfolio mix. As for the CCR and ACVA analyses, the report shows that there is significant variability across banks in the calculation of CCR and ACVA, especially for equity and foreign exchange OTC derivatives.