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 Retiree Health Care Coverage Overseas Retirees traveling abroad need to know that their health insurance travels with them. The Real Cost of a Vacation Home What if instead of buying that vacation home, you invested the money? Social Security: By the Numbers Here are five facts about Social Security that might surprise you.