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 Long-Term-Care Protection Strategies The chances of needing long-term care, its cost, and strategies for covering that cost. What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability. Should I Buy or Lease an Auto? This calculator compares the financial impact of leasing versus buying an automobile.