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 Preparing for the Expected You can plan ahead to protect yourself and your family against the financial consequences of deteriorating health. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. Jane Bond: Scaling the Ladder Agent Jane Bond is on the case, uncovering the mystery of bond laddering.