The Bush administration plans to spend an initial $250 billion of the $700 billion bailout buying stock in private banks, greatly expanding protections for the U.S. financial system out of deep concern for the faltering economy, industry and government officials said Monday night. President George W. Bush planned to announce the details Tuesday morning.

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Agreement on the plan came after a remarkable Treasury Department meeting between top government economic officials and executives of the nation's largest banks to revamp the most costly financial rescue in the nation's history.

The plan also would provide a way for the government to insure loans that banks make to each other, a critical part of the credit system that has become frozen and put many businesses in peril.

Monday night, the Treasury Department said the administration had decided on "comprehensive actions" to bolster public confidence in the nation's financial system. Bush was to be briefed early Tuesday by economic advisers and then announce the plan, which Treasury said was designed to "restore functioning of our credit markets."

While the administration refused to provide details in advance, industry and government officials with knowledge of the plan said it would include billions of dollars in spending by the government to purchase stock in banks as a way of providing them desperately needed money so they could resume more normal lending. The industry and government officials spoke on condition of anonymity because the details were yet to be formally released.

The administration will use $250 billion of the bailout program recently passed by Congress to buy into U.S. banks, the officials said. The government initially will purchase stock of nine large banks, but the program is expected to be expanded to many others. Among the initial banks participating will be all of the country's largest institutions, including Citigroup Inc., Wells Fargo & Co., JPMorgan Chase & Co, Bank of America Corp. and Morgan Stanley, said one official, who added that administration briefers did not provide any amounts that would be received by individual banks.

The administration expects to spend the $250 billion buying bank stock before the end of this year, this official said. Bush will certify on Tuesday that another $100 billion is needed from the $700 billion rescue program. That would leave the final $350 billion to be spent.

In addition to the stock purchases, the Federal Deposit Insurance Corp. will temporarily provide insurance for loans between banks, charging the banks a premium for doing so.

This FDIC program would take the form of providing insurance for new "senior preferred" debt that one bank would lend to another. This debt would be insured by the FDIC for three years, helping to unlock bank-to-bank lending, which has fallen dramatically because of fears about repayment in the face of billions of dollars of bank losses because of bad loans, primarily in mortgages.

The officials said that the FDIC would remove for a period the current $250,000 limit on FDIC insurance on bank deposits for non-interest bearing accounts. This would primarily benefit businesses who use non-interest bearing accounts to run their businesses. That money would now be insured, removing the need for these businesses to juggle funds among multiple bank accounts to stay under the $250,000 limit.

Congress, as part of the bailout bill, temporarily boosted the deposit insurance cap from $100,000 to $250,000.

The administration's proposals were explained during a meeting at the Treasury Department that had been called by Treasury Secretary Henry Paulson and included the top executives of the largest banks in the country. Federal Reserve Chairman Ben Bernanke also participated in the discussions.

Dow Enjoys Biggest One-Day Gain Ever

On Wall Street, stocks stormed back from last week's devastating losses, sending the Dow up nearly an inconceivable 936 points after major governments' plans to support the global banking system reassured distraught investors. The Dow crushed its previous one-day record gain of 499.2 points, set during the waning days of the dot-com boom on March 16, 2000.

The Dow closed 936 points up at the 9,387.61 level. All the major indexes finished the day gaining more than 11 percent.

The Dow had suffered eight sessions of losses totaling nearly 2,400 points. Last week, the Dow suffered its worst weekly percentage decline in history, down more than 18 percent.

The big advance does not mean that the stock market can put all its concerns about tight credit and the economy behind it. Prices often ratchet up and down in a recovery. So some of Monday's big gains may disappear when trading resumes Tuesday.