On August 15, the OCC issued bulletin OCC 2013-17 regarding its final lending limits rule. In June 2012, the OCC promulgated an interim final rule to apply its existing lending limits rule to certain credit exposures arising from derivative transactions and securities financing transactions, as required by the Dodd-Frank Act. With the interim final rule and subsequent actions, the OCC extended the compliance date while it accepted comments and prepared a final rule. As explained in the bulletin, the final rule outlines permissible methods available to banks to measure credit exposures arising from derivative transactions and securities financing transactions. For derivative transactions, banks can generally choose to measure credit exposure through (i) the Conversion Factor Matrix Method, which uses a lookup table that locks in the attributable exposure at the execution of the transaction, (ii) the Current Exposure Method, which replaces the Remaining Maturity Method included in the interim final rule and provides a more precise calculation of credit exposure, or (iii) an OCC-approved internal model. For securities financing transactions, the final rule specifically exempts securities financing transactions relating to Type I securities and for other securities financing transactions allows banks to (i) lock in the attributable exposure based on the type of transaction, (ii) use an OCC-approved internal model, or (iii) use the Basel Collateral Haircut Method, which applies standard supervisory haircuts for measuring counterparty credit risk for such transactions under the capital rules’ Basel II Advanced Internal Ratings-Based Approach or the Basel III Advanced Approaches. The final rule also extends the compliance period through October 1, 2013.