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 Saving for Retirement This calculator can help you estimate how much you may need to save for retirement. Volunteering in Retirement For many, retirement includes contributing their time and talents to an organization in need. When to Self-Insure Choosing to bear the financial burden of an adverse event is called self-insuring. Do you know what that entails?