Some people mistakenly believe that Social Security benefits are always free from federal income tax. Unfortunately, that’s often not the case. In fact, depending on how much overall income you have, up to 85% of your benefits could be hit with federal income tax. While the truth about the federal income tax bite on Social Security benefits may be painful, it’s better to understand it. Here are the rules. Calculate provisional income The amount of Social Security benefits that must be reported as taxable income on your tax return depends on your “provisional income.” To arrive at provisional income, start with your adjusted gross income (AGI), which is the number that appears on Page 1, Line 11 of Form 1040. Then, subtract your Social Security benefits to arrive at your adjusted...