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 Dog Bites Neighbor. Now What? Even dogs have bad days. So, what happens when your dog bites a neighbor or passing pedestrian? Do You Owe The AMT? If you want to avoid potential surprises at tax time, it may make sense to know where you stand when it comes to the AMT. A Decision Not Made Is Still a Decision Investors who put off important investment decisions may face potential consequence to their future financial security.