Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. 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 When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. 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. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year.