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 The Wild West of Data Theft Learn about cyber liability insurance in this entertaining video. Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work. Retirement Questions That Have Nothing to Do With Money Things to consider before retirement.