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 Question Thank you! Oops! Related Content The Cycle of Investing Understanding the cycle of investing may help you avoid easy pitfalls. Retirement Seen Through Your Eyes What's your vision of retirement? Safeguard Your Digital Estate If you died, what would happen to your email archives, social profiles and online accounts?