Simple interest calculates earnings or payments based solely on the initial principal, while compound interest grows by calculating interest on both the principal and the accumulated interest over ...

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.

Interest is the amount of money you must pay to borrow money in addition to the loan's principal. It's also the amount you are paid over time when you deposit money in a savings account or certificate ...