The Group of Central Bank Governors and Heads of Supervision (GHOS), has endorsed the outstanding Basel III post-crisis regulatory reforms, which include the following elements:
- a revised standardized approach for credit risk, which will improve the robustness and risk sensitivity of the existing approach;
- revisions to the internal ratings-based approach for credit risk, where the use of the most advanced internally modeled approaches for low-default portfolios will be limited;
- revisions to the credit valuation adjustment (CVA) framework, including the removal of the internally modeled approach and the introduction of a revised standardized approach;
- a revised standardized approach for operational risk, which will replace the existing standardized approaches and the advanced measurement approaches;
- revisions to the measurement of the leverage ratio and a leverage ratio buffer for global systemically important banks (G-SIBs), which will take the form of a Tier 1 capital buffer set at 50% of a G-SIB’s risk-weighted capital buffer; and
- an aggregate output floor, which will ensure that banks’ risk-weighted assets (RWAs) generated by internal models are no lower than 72.5% of RWAs as calculated by the Basel III framework’s standardized approaches. Banks will also be required to disclose their RWAs based on these standardized approaches.