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 Exploring the Federal Student Grant Program In this article, explore the benefits of the Federal Student Grant Program. Conquering Retirement Challenges for Women Looking ahead can help you conquer these unique obstacles. Mortgages in Retirement Explore the benefits and drawbacks to paying off your mortgage prior to retirement with this article.