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 Replacing Your Medicare Card Learn how to replace your lost, stolen, or damaged Medicare card in this helpful article. 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 Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA.