Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Medicare At 65+ 65 or older? It may be time to enroll in Medicare. Read to learn if you’re eligible. My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. Lifetime of Earnings Estimate how much you have the potential to earn during your working years.