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. How to Appeal Your Property Taxes For homeowners who think their property taxes are too high, there are ways to appeal. The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route.