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 When Do You Need a Will? When do you need a will? The answer is easy: Right Now. Retiring Wild: National Parks and You Get ready to enjoy America’s national park system with this helpful article. Is a Variable Annuity Right for Me? Pundits go on and on about how “terrible” or “wonderful” annuities are, but they never talk about whether annuities are right.