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 Four Steps to Valuing an Estate Determining the value of your estate, or for someone who has passed away, can be a complex undertaking. What's New for Social Security? There have been a number of changes to Social Security that may affect you, especially if you are nearing retirement. Variable Universal Life Insurance Variable Universal Life is permanent insurance in which the policyholder directs how premiums are invested.