Despite the new tax rate reductions from the Jobs and Growth Tax Relief Reconciliation Act of 2003, the top marginal tax bracket for many retirees can be a whopping 46.3%. Why? Because Social Security benefits are subject to income in taxes. Those affected are Social Security recipients who include the good fortune (misfortune?) always be subject to both the 25% taxes bracket along with the 85% inclusion rate for Social Security benefits. Julie's total exclusion is $94,079. On her behalf Amer...