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 Should I Buy or Lease an Auto? This calculator compares the financial impact of leasing versus buying an automobile. Social Security: By the Numbers Here are five facts about Social Security that might surprise you. A Checklist for When a Spouse or Parent Passes An overview of some fundamental steps when a loved one passes.