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 Pay Yourself First It sounds simple, but paying yourself first can really pay off. Split Annuity Strategy Here's one strategy that combines two different annuities to generate income and rebuild principal. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable.