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 Why Medicare Should Be Part of Your Retirement Strategy How Medicare can address health care needs in your retirement strategy. RE: Retirement How does your ideal retirement differ from reality, and what can we do to better align the two? The Basics of Medicare Learn all about Medicare basics in this informative and insightful article.