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 Question Thank you! Oops! Related Content Managing Money as a Couple Keys to preparing to grow wealthy together. The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Important Birthdays Over 50 Here's a look at several birthdays and “half-birthdays” that have implications regarding your retirement income.