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 What Smart Investors Know Savvy investors take the time to separate emotion from fact. Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. Should You Tap Retirement Savings to Fund College? There are three things to consider before dipping into retirement savings to pay for college.