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 Should You Invest in Exchange Traded Funds? There are thousands of ETFs available. Should you invest in them? Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit. All Muni Bonds Are Not Created Equal Gaining a better understanding of municipal bonds makes more sense than ever.