Despite the new tax rate reductions from the Jobs and Growth Tax Relief Reconciliation Act of 2003, tips for sites marginal income tax bracket for many retirees is really a whopping fouthy-six.3%. Why? Because Social Security benefits are subject to income income tax. Those affected are Social Security recipients who have the good fortune (misfortune?) pertaining to being subject to both the 25% income tax bracket along with the 85% inclusion rate for Social Security benefits. The federal inc...