While some might argue that compound interest is the most powerful force in the universe, it is undoubtedly one of the most powerful financial forces on Earth. Understanding how compound interest ...

Ally Financial reports that compound interest is a powerful tool that helps savings grow faster by earning interest on both the principal and accumulated interest.

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.

Matt Webber is an experienced personal finance writer, researcher, and editor. He has published widely on personal finance, marketing, and the impact of technology on contemporary arts and culture.