Number: RL30469 Title: Average Effective Corporate Tax Rates: 1959 to 2005 Authors: Steve Maguire, Government and Finance Division Abstract: This report provides calculations of the average effective corporate tax rate of domestic-nonfinancial corporations from 1959 to 2005. The purpose of the report is to identify historical trends in the level of the corporate tax rates. Pages: 8 Date: September 6, 2006