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 Question Thank you! Oops! Related Content Retirement Plan Choices for Small Businesses Retirement choices can be intimidating. Picking the right strategy. How to Read Your Credit Report Solve a mystery while learning how important your credit report is with this story-driven interactive. The Cost of Procrastination Procrastination can be costly. When you get a late start, it may be difficult to make up for lost time.