The Board of Governors of the Federal Reserve System is adopting a final rule that establishes risk-based capital surcharges for the largest, most interconnected U.S.-based bank holding companies pursuant to section 165 of the Dodd-Frank Wall Street Reform and Consumer Protection Act. The final rule requires a U.S. top-tier bank holding company that is an advanced approaches institution to calculate a measure of its systemic importance. A bank holding company whose measure of systemic importance exceeds a defined threshold would be identified as a global systemically important bank holding company and would be subject to a risk-based capital surcharge (GSIB surcharge). The GSIB surcharge is phased in beginning on January 1, 2016, through year-end 2018, and becomes fully effective on January 1, 2019. The final rule also revises the terminology used to identify the bank holding companies subject to the enhanced supplementary leverage ratio standards to ensure consistency in the scope of application between the enhanced supplementary leverage ratio standards and the GSIB surcharge framework.