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 Helpful Retirement Strategies for Women Learn how to address the challenges that women face when planning for retirement. What to Look for in Personal Finance Apps An increasing number have been developed to help individuals with their personal finances. How to Appeal Your Property Taxes For homeowners who think their property taxes are too high, there are ways to appeal.