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 Creative Ways to Motivate Your Employees Five creative (and inexpensive) ideas for motivating your employees. When Life Insurance Becomes Taxable Life insurance proceeds are generally tax-free. But not in all cases. Understanding Equity Compensation Net Unrealized Appreciation and how it affects tax responsibilities.