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 9 Facts About Social Security There are things about Social Security that might surprise you. The Basics of Medicare Learn all about Medicare basics in this informative and insightful article. Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind.