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. What’s Your Investment IQ? You make decisions for your portfolio, but how much do you really know about the products you buy? Try this quiz When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits.