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 A Penny Saved is Two Pennies Earned Here are some simple and inexpensive energy-saving tips that may help you save money. Consider Keeping Your Life Insurance When You Retire Reasons to retain your coverage into your retirement years. The Cycle of Investing Understanding the cycle of investing may help you avoid easy pitfalls.