Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. 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 Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Personal Finance Calendar Use this handy calendar to remember the year’s most important financial dates. To Buy or Not to Buy The decision whether to buy or rent a home may have long-term implications.