Recently, I’ve noticed many people confuse APR and APY. In fact, the difference between these two concepts is quite significant, especially in how they directly impact investment returns.

Let's start with the easier one to understand. APY is the annual percentage yield, which means the actual annual return that accounts for compound interest. Simply put, your interest keeps accumulating, with interest added back to the principal daily, monthly, or quarterly, and then earning interest again. That’s why APY is usually higher than APR, because it reflects the true earnings brought by compounding. If you’re saving money in a bank or participating in crypto staking, the annual interest rate you see is often the APY.

So, what about APR? The annual percentage rate means the simple interest calculated solely on the principal, without considering compounding. Credit cards, consumer loans, and mortgages typically use APR to indicate costs. Since it only considers the principal, APR appears lower, but the actual cost might be underestimated.

Here's an example to make it clear. Suppose you invest money with an annual interest rate of 10%. Using APR, it’s simply 10% per year. But if it’s APY with monthly compounding, the actual return could be around 10.47%, which makes a noticeable difference.

Therefore, the key point is that when evaluating investment or loan products, you must understand whether the provider is quoting APR or APY. Bank deposits, funds, and crypto staking usually list APY, which more accurately reflects your real earnings. Loan products quote APR, but the actual cost could be higher. Many platforms now display both figures so you can compare and see the difference.