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 Message Thank you! Oops! Related Content Here’s the Retirement Crystal Ball You’ve Been Waiting For Making retirement calculations isn’t about perfection; it’s about helping you prepare confidently. Thanks, Mom! When it comes to managing your personal finances, there’s plenty of complex advice out there. But often, simpler is better. How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits.