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 The Basics of Medicare Learn all about Medicare basics in this informative and insightful article. Your DNA Test Preparing for the unexpected can make all the difference if your family relies on your income. The A, B, C, & D of Medicare Learn about all the parts of Medicare with this informative and enjoyable article.