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 Catch-Up Contributions Workers 50+ may make contributions to their qualified retirement plans above the limits imposed on younger workers. Gap Insurance for Leased Cars If you’re thinking of leasing a new car, then you shouldn’t forget about gap insurance. When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits.