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 What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. A Fruitful Retirement: Social Security Benefit Taking your Social Security benefits at the right time may help maximize your benefit. Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are?