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. Working With A Financial Professional A financial professional is an invaluable resource to help you untangle the complexities of whatever life throws at you. My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates.