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 Should I Invest in Gold? Learning more about gold and its history may help you decide whether it has a place in your portfolio. Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? How to Retire Early Retiring early sounds like a dream come true, but it’s important to take a look at the cold, hard facts.