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 Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process. 8 Financial Milestone Birthdays Get ready to celebrate your financial birthdays in this informative infographic. Conquering Retirement Challenges for Women Looking ahead can help you conquer these unique obstacles.