Guarantees and Credit Derivatives

Where the bank transfers a portion of the risk of an exposure in one or more tranches to a protection seller or sellers and retains some level of the risk of the loan, and the risk transferred and the risk retained are of different seniority, banks may obtain credit protection for either the senior tranches (e.g. the second-loss portion) or the junior tranche (e.g. the first-loss portion). In this case the rules as set out in the securitization standard apply. Currency mismatches 9.81 Where the credit protection is denominated in a currency different from that in which the exposure is denominated – i.e. there is a currency mismatch – the amount of the exposure deemed to be protected must be reduced by the application of a haircut H FX , using the formula that follows, where: (1) G = nominal amount of the credit protection (2) H FX = haircut appropriate for currency mismatch between the credit protection and underlying obligation 9.82 The currency mismatch haircut for a 10-business day holding period (assuming daily marking to market) is 8%. This haircut must be scaled up using the square root of time formula, depending on the frequency of revaluation of the credit protection as described in paragraph 9.58 . Sovereign guarantees and counter-guarantees