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 Questions That Have Nothing to Do With Money Things to consider before retirement. Putting a Price Tag On Your Health Being healthy not only makes you feel good, it may also help you financially. Raising Healthy Children Healthy habits are one of the greatest gifts to give your child.