Source: Bloomberg

The U.S. financial system remains fragile and banks subjected to additional economic stress might need as much as $76 billion in capital, according to the results of International Monetary Fund stress tests.

The findings, released today as part of a broader IMF report on the U.S. financial system, suggested that while the nation’s banking system is stable, it remains vulnerable. Home prices, commercial real estate loans and economic growth have the potential to cause shocks that could expose banks to more losses.

Under one scenario, small and regional banks as well as subsidiaries of foreign banks would need $40.5 billion in additional capital to meet a benchmark capital ratio of 6 percent Tier 1 common equity from 2010 to 2014. Under the adverse scenario, those needs rise to $76.3 billion, according to the report.

“Pockets of vulnerabilities linger,” the fund said in the report. The U.S. is recovering from what the IMF called “one of the most devastating financial crises in a century.”

Because the economic recovery is proceeding slowly, regulators must be especially vigilant in guarding against risks and weak spots, the report said.

The IMF also renewed its call for the Obama administration to push ahead with changes to Fannie Mae and Freddie Mac, the government-sponsored enterprise housing companies. The report suggested a partial privatization strategy, in which the government would take over the GSEs’ public housing mission while privatizing investment operations.