Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. 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 Surprises Making the most of surprises is a great reason to work with us. The Latte Lie and Other Myths Check out this video to begin separating fact from fiction. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.