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 Estimating the Cost of College This worksheet can help you estimate the costs of a four-year college program. Tax Efficiency in Retirement What role would taxes play in your investment decisions? Asset Allocation Consider how your assets are allocated and if that allocation is consistent with your time frame and risk tolerance.