Disagreements between the banks and regulators pushed back the release date, which initially was expected to be earlier in the week.

In addition to an overall snapshot of the health of the 19 large banks being assessed, the Fed will provide details about individual banks, according to the official, who spoke on condition of anonymity because of the sensitive nature of the matter.

The Fed will describe the resources banks would need in order to absorb losses on certain types of loans and investments under adverse economic conditions.

In late April, Fed officials said that all 19 banks that underwent stress testing will need to keep an extra buffer of capital reserves beyond what's now required, in case losses continue to mount. That would mean some banks will likely have to raise additional cash.

If they do, banks will have up to six months to raise the money from private-sector markets, Federal Reserve chairman Ben Bernanke has said. If they can't, the government would step in with assistance.

The tests were conducted to help regulators decide whether the banks have sufficient capital -and the right mix of it - to withstand additional shocks to the economy.

In the tests, the Fed put banks - including Citigroup, Bank of America and Goldman Sachs - through two hypothetical scenarios to see how much of a financial hit they would suffer on loans and other assets.

Fallout from the housing, credit and banking crises - the worst since the 1930s - has badly pounded banks. A growing number have failed and others have suffered huge losses.

Last week, the International Monetary Fund estimated losses on loans and securities originating in the United States at $2.7 trillion from 2007 to 2010.