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 Timing Your Retirement This short video illustrates the importance of understanding sequence of returns risk. 18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst?