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 Acres of Diamonds In life it often happens that the answers to our most pressing questions are right in our own backyards. Estimate Your RMD Help determine the required minimum distribution from an IRA or other qualified retirement plan. Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter.