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 Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment. Saving for Retirement This calculator can help you estimate how much you may need to save for retirement. Caring for Aging Parents As our nation ages, many Americans are turning their attention to caring for aging parents.