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 Helpful Retirement Strategies for Women Learn how to address the challenges that women face when planning for retirement. Saving Early & Letting Time Work For You The earlier you start pursuing financial goals, the better your outcome may be. 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.