Standard & Poor's said the potential bill to U.S. taxpayers for bailing out Wall Street firms could grow to $400 billion. If Fannie Mae and Freddie Mac are included, the bill could soar by an additional $1.4 trillion, for a total of $1.8 trillion, causing the U.S. government to loose its AAA rating and plunging the country into a deep and prolonged recession.

S&P said it would cost up to 10% of the economy's $14 trillion annual output, or $1.4 trillion, to rescue the credit agencies, including the Federal Home Loan Banks.

Subscribe Now

Access to premium content including in-depth coverage of mutual funds, hedge funds, 401(K)s, 529 plans, and more.

3-Week Free Trial

Insight and analysis into the management, marketing, operations and technology of the asset management industry.