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 What Do Your Taxes Pay For? Here's a breakdown of how the federal government spends your tax money. Investments You’ve made investments your whole life. Work with us to help make the most of them. Earnings for All Seasons Earnings season can move markets. What is it and why is it important?