Most U.S. and foreign corporations doing business in the United States avoid paying any federal income taxes, despite trillions of dollars worth of sales, a government study released on Tuesday said.

The Government Accountability Office said 72 percent of all foreign corporations and about 57 percent of U.S. companies doing business in the United States paid no federal income taxes for at least one year between 1998 and 2005.

More than half of foreign companies and about 42 percent of U.S. companies paid no U.S. income taxes for two or more years in that period, the report said.