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. Estate Management Checklist Is your estate in order? This short quiz may help you assess your overall strategy. When Life Insurance Becomes Taxable Life insurance proceeds are generally tax-free. But not in all cases.