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 Message Thank you! Oops! Related Content Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. Saving for Retirement This calculator can help you estimate how much you may need to save for retirement. Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind.