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 Separating the Signal From the Noise A good professional provides important guidance and insight through the years. What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year.