(Reuters) - Thirty large and profitable U.S. corporations paid no income taxes in 2008 through 2010, said a study on Thursday that arrives as Congress faces rising demands for tax reform, but seems unable or unwilling to act.
Pepco Holdings, a Washington, D.C.-area power company, had the lowest effective tax rate, at negative 57.6 percent, among the 280 Fortune 500 companies studied.
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