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 Working With A Financial Professional A financial professional is an invaluable resource to help you untangle the complexities of whatever life throws at you. A Checklist for When a Spouse or Parent Passes An overview of some fundamental steps when a loved one passes. Questions to Ask About Medicare Take the guesswork out of your IEP or SEP with this helpful article.