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 Perception vs. Reality There’s an alarming difference between perception and reality for current and future retirees. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial? Silver Sneakers 101 Medicare’s popular program, offering free gym membership and health education.