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 When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. Retirement Seen Through Your Eyes What's your vision of retirement? Important Birthdays Over 50 Here's a look at several birthdays and “half-birthdays” that have implications regarding your retirement income.