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 Don’t Be Your Own Worst Enemy Emotional biases can adversely impact financial decision making. Here’s a few to be mindful of. Medicare Advantage 101 Overview of Medicare Advantage, what’s in them, special rules, and more. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability.