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 What to Expect in the Next Four Years With a new administration, things will change, but no one knows exactly how. Here’s a little insight. 18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial?