Compound interest is one of the great powers of the financial world. Compound interest can help a 20-year-old become a multimillionaire by retirement age without having to save millions. Whether you ...

Compound interest can help turbocharge your savings and investments, or it can quickly lead to an unruly balance, keeping you stuck in a cycle of debt. Its magic can help you earn more — or owe more.

Capital at risk. The value of your investments can go up and down, and you may get back less than you invest. Compound interest is what you get when interest or income earned on an account goes on to ...