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 Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy. The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial?