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 What to Do When You Lose Your Wallet Ever lost your wallet? Frustrating. Here’s what you can do to keep yourself safe. Should I Pay Off Debt or Invest? This calculator will help determine whether you should invest funds or pay down debt. Please Leave Home Without It Concerns over identity theft continue to grow, especially with data breaches at major companies and financial institutions.