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 Raising Healthy Children Healthy habits are one of the greatest gifts to give your child. Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst? The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective.