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 What's New for Social Security? There have been a number of changes to Social Security that may affect you, especially if you are nearing retirement. The Other Sure Thing Though we don't like to think about it, all of us will make an exit sometime. Are you prepared? Mastering Mobile Lingo Do you understand these common mobile slang terms?