In contrast to previous examinations of the role of accounting in financial crises, this paper explores the way in which accounting has been woven into a new system of banking regulations. Although the regulatory reform of the mid-1980s was intended to maintain the soundness of banking businesses, it failed to prevent banks from excessive asset expansion in the latter half of the 1980s in Japan. One of the major causes of this regulatory failure is found in the way that the regulatory capital is defined for the new capital adequacy regulation. The latent revaluation reserves are partially counted as capital. Japanese domestic regulatory reform took place in the wider context of the international standardization of capital adequacy regulations (BIS standards). Japanese regulators utilized taken-for-granted practices of accounting to creatively comply with the BIS standards. © 2002 Published by Elsevier Science Ltd.