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 4 Elements of an Estate Strategy Learn about the importance of having an estate strategy in this helpful and informative video. How to Read Your Credit Report Solve a mystery while learning how important your credit report is with this story-driven interactive. Mutual Funds vs. ETFs Exchange-traded funds have some things in common with mutual funds, but there are differences, too.