The Power of Compound Interest Learn how to harness the power of compound interest for your investments. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! 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? Life and Death of a Twenty Dollar Bill How long does a $20 bill last? Doubling Your Money This calculator demonstrates the power of compound interest.