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 5 Benefits of Working in Retirement Here are 5 reason why you may consider working through retirement. Charitable Giving: Smart from the Heart Do you have causes that you want to support with donations? Understanding Extended Care Understanding the types of extended care services—and what those services could cost—may be critical.