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 Making Sense Of A Home Warranty Understanding the value of a home warranty. A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year.