A major aim of Basel II has been to revise the rules of the 1988 Basel Capital Accord in such a way as to align banks´ regulatory capital more closely with their risks, taking account of progress in the measurement and management of risk and of the opportunities which these provide for strengthened supervision. Achievement of this aim has involved the incorporation in Basel II of methods for quantifying banking risks introduced since the late 1980s. The task of the designers of Basel II has been complicated by the way in which the BCBS´s rules for banks´ capital, originally intended for the internationally active banks of its member countries, have become a global standard widely applied in developing as well as developed countries. Acceptance of this role by the BCBS has entailed a global consultation process, whose results have been reflected in three consultative papers and the RF, and the different approaches and options for setting numerical capital requirements which are intended to accommodate banks and supervisors of different levels of sophistication. As well as providing a commentary on the main features of the RF this paper documents the response of the BCBS to some of the more important points which were raised during this consultation process, including the outcome of decisions taken at a meeting in Madrid in October 2003 following comments on the consultative paper of April 2003, and summarises the results of the most recent of the BCBS´s initiatives to estimate the quantitative impact of the Basel II rules on banks´ capital. This discussion includes a review of papers issued by the BCBS as part of the last stage of its work preceding the RF.
