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. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Unintentionally Disinheriting Your Spouse When’s the last time you reviewed your will? Do you remember your attorney discussing a concept known as the unified credit? Variable Universal Life Insurance Variable Universal Life is permanent insurance in which the policyholder directs how premiums are invested. The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding.