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 A Meal for All Generations When it comes to generational differences, knowing the facts can be difficult. Why Medicare Should Be Part of Your Retirement Strategy How Medicare can address health care needs in your retirement strategy. Volunteering in Retirement For many, retirement includes contributing their time and talents to an organization in need.