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 If You Get Audited? The chances of an IRS audit aren't that high. And being audited does not necessarily imply that the IRS suspects wrongdoing. The History of Currency Currency has been around for a long time. Here’s a quick history lesson. Inventorying Your Possessions Creating an inventory of your possessions can save you time, money and aggravation in the event you someday suffer losses.