Simple interest and compound interest can look nearly identical in year one and dramatically different by year twenty. This guide compares them directly, with numbers, so you know which one is actually working in your favor.
Simple interest is one of the oldest and most straightforward concepts in finance, yet it still underpins many real-world loans and savings products today. Here's exactly how it works.
Simple and compound interest can produce very different totals from the same rate and principal. This comparison shows exactly how much the difference is worth over time.
Simple interest is genuinely simple math, but a handful of recurring mistakes still trip people up regularly, leading to under- or over-estimated loan and savings figures.
Simple interest shows up in more everyday financial products than most people realize. These worked examples walk through loans, bonds, savings, and invoicing scenarios in detail.