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 A Penny Saved is Two Pennies Earned Here are some simple and inexpensive energy-saving tips that may help you save money. Dreaming Up an Active Retirement When you retire, how will you treat your next chapter? Three Key Questions to Answer Before Taking Social Security When to start? Should I continue to work? How can I maximize my benefit?