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 Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. Should I Buy or Lease an Auto? This calculator compares the financial impact of leasing versus buying an automobile. The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective.