Application of Own Credit Risk Adjustments to Derivatives

by the Basel Committee on Banking Supervision

December 2011

Abstract: A deterioration in a bank's own creditworthiness can lead to an increase in the bank's common equity as a result of a reduction in the value of its liabilities. The Basel III rules seek to prevent this. Paragraph 75 of the Basel III rules requires a bank to "[d]erecognise in the calculation of Common Equity Tier 1, all unrealised gains and losses that have resulted from changes in the fair value of liabilities that are due to changes in the bank's own credit risk". The application of paragraph 75 to fair valued derivatives is not straightforward since their valuations depend on a range of factors other than the bank's own creditworthiness. The consultative paper proposes that debit valuation adjustments (DVAs) for over-the-counter derivatives and securities financing transactions should be fully deducted in the calculation of Common Equity Tier 1. It briefly reviews other options for applying the underlying concept of paragraph 75 to these products and the reasons these alternatives were not supported by the Basel Committee.

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