The government's unprecedented $700 billion economic bailout will actually cost taxpayers just 16 percent of that total, according to a Congressional Budget Office report released Wednesday.

The Treasury's losses on the Troubled Asset Relief Program (TARP) will total $109 billion over the program's lifetime, CBO latest estimates show. That's up $10 billion from the agency's last projection, released in January.

CBO, which is charged with reviewing congressional budgets, has released a series of TARP cost calculations in the 17 months since the bailout began, each time updating its numbers with the latest data. At one point CBO expected the cost to be as high as $356 billion, but faster-than-expected bank repayments and other cost adjustments have drastically reduced the expected price tag.

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