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 What Our Kids Can Teach us About Saving Money Would you guess that Millennials are effectively saving for retirement? Well, they are. 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.