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 Personal Finance Calendar Use this handy calendar to remember the year’s most important financial dates. Assess Life Insurance Needs How to help determine life insurance needs to provide for your family after you pass away. Earnings for All Seasons Earnings season can move markets. What is it and why is it important?