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 Question Thank you! Oops! Related Content Insurance Needs Assessment: When You're Young and Single Even if you’re young and single, you should still consider protecting yourself. Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process. How to Read Your Credit Report Solve a mystery while learning how important your credit report is with this story-driven interactive.