Making Your Tax Bracket Work Have you explored all your options when it comes to managing your taxable income? Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit. Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax.