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 A Taxing Story: Capital Gains and Losses Understanding how capital gains are taxed may help you refine your investment strategies. Replacing Your Medicare Card Learn how to replace your lost, stolen, or damaged Medicare card in this helpful article. The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does.