Despite brand new tax rate reductions of your Jobs and Growth Tax Relief Reconciliation Act of 2003, the superior marginal income tax bracket for many retirees is really a whopping 46.3%. Why? Because Social Security benefits are subject to income taxation. Those affected are Social Security recipients who have enough good fortune (misfortune?) pertaining to being subject to both the 25% tax bracket along with the 85% inclusion rate for Social Security benefits. For 20 years, overall reve...