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 Tax Efficiency in Retirement What role would taxes play in your investment decisions? Can I Refinance My Mortgage? This calculator can help determine whether it makes sense to refinance your mortgage. Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work.