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 Retirement Planning With Your Special Needs Child in Mind Having a special needs child adds another layer of complexity to retirement planning. A special needs trust may help. Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind. The Big Picture–Little Focus on Big Issues If the stock market is hitting record highs, why aren’t money managers feeling the love?