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 Prescription Drug Benefits Under Medicare (Part D) Do you need to enroll in Medicare Part D? Read this article to learn more about whether you need this coverage Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA. SECURE Act 2.0: An Overview The second iteration of the SECURE Act brings forward several changes to the world of retirement.