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 Message Thank you! Oops! Related Content Keeping Good Records is Good Business Maintaining good records for your business not only helps to meet your tax and legal obligations, but it can save you money. The Cost of Procrastination Don't let procrastination keep you from pursuing your financial dreams and goals. Does Your Child Need to File an Income Tax Return? When your child has income, there’s a good chance that he or she will need to report it and pay taxes.