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 Message Thank you! Oops! Related Content Data Breach: Your Security To-Do List This article provides a checklist of steps to take if you experience a data breach. Making a Charitable Contribution There are benefits and limitations when you decide to donate stock. Choosing a Business Structure Entrepreneurs all face the same question, “Which business structure should I adopt?”