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 Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers. Dog Bites Neighbor. Now What? Even dogs have bad days. So, what happens when your dog bites a neighbor or passing pedestrian?