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 Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. Fallen Tree Damage—Who Pays? Your liability for damages that occur when a tree on your property falls on your neighbor’s property is not clear cut. Potential Income from an IRA Estimate your monthly and annual income from various IRA types.