The Power of Compound Interest Learn how to harness the power of compound interest for your investments. Share | Related Content Keeping Up with the Joneses Lifestyle inflation can be the enemy of wealth building. What could happen if you invested instead of buying more stuff? Buying vs. Leasing a Car Whatever your relationship with your car, it may eventually come time for a new one. Familiarize yourself with your options. Doubling Your Money This calculator demonstrates the power of compound interest.