Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. 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 When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. What Is My Risk Tolerance? This questionnaire will help determine your tolerance for investment risk. Insurance Needs Assessment: When You're Young and Single Even if you’re young and single, you should still consider protecting yourself.