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 Message Thank you! Oops! Related Content The Junk Drawer Approach to Investing It's easy to let investments accumulate like old receipts in a junk drawer. Making Your Tax Bracket Work Have you explored all your options when it comes to managing your taxable income? Comparing Mortgage Terms Estimate the total cost in today's dollars of various mortgage alternatives.