Simple and Compound Interest Rates with Equivalency

Interest is the price of using someone else’s money, but not all interest is the same. In this section, you will see the critical difference between simple interest, where the base amount never changes, and compound interest, where interest earns interest on itself. Understanding how to compare these two rates — finding an equivalent rate that makes them equal over a given period — is a powerful tool for choosing between loans, investments, and savings options. This idea of e …