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 Avoiding Cognitive Decline Try these activities to keep your brain sharp. Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement. Your DNA Test Preparing for the unexpected can make all the difference if your family relies on your income.