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 Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions. Putting a Price Tag On Your Health Being healthy not only makes you feel good, it may also help you financially. Password Protection Strategies Simple steps may help you foil hackers and protect your privacy.