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.

Editor's Note: APYs listed in this article are up-to-date as of the time of publication. They may fluctuate (up or down) as the Fed rate changes. Select will update as changes are made public. Some ...

Johanna Leggatt is the Lead Editor for Forbes Advisor, Australia. She has more than 20 years' experience as a print and digital journalist, including with Australian Associated Press (AAP) and The Sun ...