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 Message Thank you! Oops! Related Content Conquering Retirement Challenges for Women Looking ahead can help you conquer these unique obstacles. Six Surprising Facts About Retirement Confidence This attention-grabbing infographic covers retirement topics you may not have considered. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.