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 Question Thank you! Oops! Related Content Inventorying Your Possessions Creating an inventory of your possessions can save you time, money and aggravation in the event you someday suffer losses. 9 Facts About Social Security There are things about Social Security that might surprise you. A Bucket Plan to Go with Your Bucket List A bucket plan can help you be better prepared for a comfortable retirement.