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 A Home Insurance Claim: To File Or Not To File Learn when it may not make sense to file a claim on your home insurance. What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability.