The Basel Committee on Banking Supervision has published for consultation a set of requirements for banks to disclose the composition of their regulatory capital. These aim to improve the transparency and comparability of bank’s capital bases, including on a cross-border basis. During the financial crisis, market participants and supervisors attempted to undertake detailed assessments of the capital positions of banks and make cross-jurisdictional comparisons. These efforts were more often hampered by insufficiently detailed disclosure and a lack of consistency in reporting between banks and across jurisdictions. Basel III has established high level disclosure requirements to impose transparency of regulatory capital and enhance market discipline. This consultation furthers that mandate.