Despite the actual tax rate reductions among the Jobs and Growth Tax Relief Reconciliation Act of 2003, the top marginal income tax bracket for many retirees can be a whopping forty six.3%. Why? Because Social Security benefits are subject to income income tax. Those affected are Social Security recipients who hold the good fortune (misfortune?) always be subject to both the 25% tax bracket and also the 85% inclusion rate for Social Security benefits. Put your plan together. Tax reduction is ...