The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions. Buying Auto Insurance For Teen Drivers Tips on insuring your teen driver. Getting a Head Start on College Savings A few strategies that may help you prepare for the cost of higher education.