Despite the new tax rate reductions from the Jobs and Growth Tax Relief Reconciliation Act of 2003, the superior marginal tax bracket for many retirees can be a whopping fouthy-six.3%. Why? Because Social Security benefits are subject to income taxation. Those affected are Social Security recipients who hold the good fortune (misfortune?) end up being subject to both the 25% income tax bracket along with the 85% inclusion rate for Social Security benefits. Learn essential concepts before ...