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 Should I Buy or Lease an Auto? This calculator compares the financial impact of leasing versus buying an automobile. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits. Buying Auto Insurance For Teen Drivers Tips on insuring your teen driver.