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 Should I Buy or Lease an Auto? This calculator compares the financial impact of leasing versus buying an automobile. Gun Ownership and Your Homeowners Policy Gun owners need to make sure that their homeowners policy covers the full value of their firearm(s) as personal liability. What If You Get Audited? The chances of an IRS audit aren't that high. And being audited does not necessarily imply that the IRS suspects wrongdoing.