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. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals. Critical Estate Documents Sound estate management includes creating financial and healthcare documents. Here's an inside look. Raising Healthy Children Healthy habits are one of the greatest gifts to give your child.