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 What Do Your Taxes Pay For? Here's a breakdown of how the federal government spends your tax money. Buying Auto Insurance For Teen Drivers Tips on insuring your teen driver. Finding the Balance The sandwich generation faces unique challenges. For many, meeting needs is a matter of finding a balance.