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 Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind. A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals. A Penny Saved is Two Pennies Earned Here are some simple and inexpensive energy-saving tips that may help you save money.