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 What Smart Investors Know Savvy investors take the time to separate emotion from fact. Life and Death of a Twenty Dollar Bill How long does a $20 bill last? Roth IRA for Kids Learn about the benefits and requirements of opening a Roth IRA for kids.