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Note L - Income Taxes
 6 Months Ended
Jun. 30, 2012
Income Tax Disclosure [Text Block]
Note L:                      Income Taxes

The Company’s effective tax rates of 38.0% and 49.2% for the six-month periods ended June 30, 2012 and 2011, respectively, differ from the statutory federal tax rate of 34% due primarily to state taxes, stock-based compensation, differences between U.S. and foreign tax rates, foreign losses incurred with no related tax benefit, changes in state rate rates, and non-deductible meals and entertainment expenses.

Fuel Tech had unrecognized tax benefits as of December 31, 2011 in the amount of $870 all of which, if ultimately recognized, will reduce Fuel Tech’s annual effective tax rate.  There have been no material changes in unrecognized tax benefits during the three- and six- month periods ended June 30, 2012.