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 Starting a Roth IRA for a Teen This early financial decision could prove helpful over time. Should I Buy or Lease an Auto? This calculator compares the financial impact of leasing versus buying an automobile. How to Cut Your Expenses Living with confidence means living within your means. managers.