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. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Retiring Wild: National Parks and You Get ready to enjoy America’s national park system with this helpful article. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial? Should You Borrow from Your 401(k)? Does it make sense to borrow from my 401(k) to pay off debt or to make a major purchase?