Proposed revisions to the international risk-based capital accord will not be released this week as had been expected.

The Basel Committee for Banking Supervision had intended to unveil the draft Friday in London, but a spokesman said the event had to be postponed because disputes over several key provisions could not be resolved. The official declined to provide more details.

The group has not set a new release date. William J. McDonough, who is Basel's chairman and president of the New York Federal Reserve Bank, has promised to overhaul the risk-based capital rules by yearend. The spokesman said the Basel Committee still is striving to meet that deadline.

A preliminary draft of the capital plan would have increased reserve requirements on loans to hedge funds and would have used bond ratings to determine reserve requirements on loans to foreign governments.

International regulators also were considering requiring more capital on loans to companies with poor bond ratings.

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