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 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. A Meal for All Generations When it comes to generational differences, knowing the facts can be difficult. The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route.