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 Exploring Retirement Plans for Small Businesses Help small businesses make better retirement decisions for employees with this eye-catching and informative infographic. Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children.