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 Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. Donating Art: Taxation Abstraction The tax rules that govern donating art are complex and confusing. Take a closer look. Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction.