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 When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. Coaches Coaches have helped you your whole life, in ways big and small. We'd like to be one of them. Volunteering in Retirement For many, retirement includes contributing their time and talents to an organization in need.