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 Question Thank you! Oops! Related Content Retiree Health Care Coverage Overseas Retirees traveling abroad need to know that their health insurance travels with them. Putting a Price Tag On Your Health Being healthy not only makes you feel good, it may also help you financially. Tuning Your Social Security Benefit When should you take your Social Security benefit?