The Basel Committee on Banking Supervision has issued in June 2105 a consultative document on the risk management, capital treatment and supervision of interest rate risk in the banking book (IRRBB). This consultative document expands upon and is intended to ultimately replace the Basel Committee’s 2004 Principles for the management and supervision of interest rate risk. The Committee’s review of the regulatory treatment of interest rate risk in the banking book is motivated by two objectives: First, to help ensure that banks have appropriate capital to cover potential losses from exposures to changes in interest rates. This is particularly important in the light of the current exceptionally low interest rate environment in many jurisdictions. Second, to limit capital arbitrage between the trading book and the banking book, as well as between banking book portfolios that are subject to different accounting treatments. The Committee is seeking comments on the proposed approaches, which share a number of common features. The full report can be found here.