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 Countdown to College Preparing for college means setting goals, staying focused, and tackling a few key milestones along the way. The Cost of Procrastination Don't let procrastination keep you from pursuing your financial dreams and goals. Keeping Good Records is Good Business Maintaining good records for your business not only helps to meet your tax and legal obligations, but it can save you money.