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 Financial Strategies for Women Some may leave their future to chance but in the world of finance, the effects of the "confidence gap" can be apparent. Caring for Aging Parents As our nation ages, many Americans are turning their attention to caring for aging parents. Buying Auto Insurance For Teen Drivers Tips on insuring your teen driver.