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 Retirement Is a Beginning Key questions to answer when you are considering retirement. When Markets React When markets shift, experienced investors stick to their strategy. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial?