The Basel Committee on Banking Supervision (BCBS) has issued revised standards for minimum capital requirements for market risk. The purpose of the revised market risk framework is to ensure that the standardised and internal model approaches to market risk deliver credible capital outcomes and promote consistent implementation of the standards across jurisdictions. The revisions focus on three key areas: revised boundary between banking book and trading book, revised internal models approach for market risk and revised standardised approach for market risk. The revised framework also includes a shift from value-at-risk to an expected shortfall measure of risk under stress and incorporation of the risk of market illiquidity.
The revised framework produces market risk risk-weighted assets (RWAs) that account for less than 10% of total RWAs, compared to approximately 6% under the current framework. The revised market risk standard would result in a medium (weighted mean) increase of approximately 22% (40%) in total market risk capital requirements as against the current market risk framework.
The revised market risk framework comes into effect on 1 January 2019. A detailed explanatory note of the new standards is available here.