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 Preparation is the Key to Retirement The simplest ideas can sometimes make a massive difference over time. Enjoy this brief video to learn more. Inflation & Retirement Estimate how much income may be needed at retirement to maintain your standard of living. Managing an Inheritance A windfall from a loved one can be both rewarding and complicated.