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 Countering Counterfeit Currency Combating counterfeiting remains core to preserving the integrity of the nation’s money. Saving for College 101 Here’s a crash course on saving for college. Personal Finance Calendar Use this handy calendar to remember the year’s most important financial dates.