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 Universal Life Insurance Universal life insurance is permanent insurance with a flexible premium. Here's how it works. Your Shifting Risk Tolerance Time and market performance may subtly and slowly imbalance your portfolio. What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children.