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 Safeguard Your Digital Estate If you died, what would happen to your email archives, social profiles and online accounts? Retirement Redefined Around the country, attitudes about retirement are shifting. Do Our Biases Affect Our Financial Choices? Even the most seasoned investors have biases affecting their financial choices.