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 Assess Life Insurance Needs How to help determine life insurance needs to provide for your family after you pass away. Your DNA Test Preparing for the unexpected can make all the difference if your family relies on your income. What Do Your Taxes Pay For? Here's a breakdown of how the federal government spends your tax money.