The Office of the Comptroller of the Currency (OCC), the Board of Governors of the Federal Reserve System (Board), the Federal Deposit Insurance Corporation (FDIC), and the Office of Thrift Supervision (OTS) (collectively, the Agencies) are amending their respective risk- based capital standards for banks, bank holding companies, and thrifts (institutions) with regard to the regulatory capital treatment of unrealized holding gains on certain equity securities. These gains are reported as a component of equity capital under U.S. generally accepted accounting principles (GAAP), but have not been included in regulatory capital under the Agencies' capital standards. This final rule permits institutions to include in supplementary (Tier 2) capital up to 45 percent of the pretax net unrealized holding gains on certain available-for-sale (AFS) equity securities. The final rule is intended to make the regulatory capital treatment of these unrealized gains consistent with the international standards of the Basle Accord.