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 Retirement Realities Many pre-retirees can become focused on the “ideal” retirement, but turning that dream into a reality can be tricky. Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement. U.S. Personal Savings Rate What can be learned from the savings rate?