I've noticed that many in the crypto community confuse APR and APY, even though the difference between them can significantly impact your earnings. Let's figure out what’s what.

First, about APR — this is the annual percentage rate in the traditional sense. Simply put, if you take out a loan or make an investment, APR shows how much interest you will earn or pay over a year. But here’s the catch: APR is calculated only on the principal amount, without accounting for the fact that interest is accrued multiple times a year. That’s why APR is often used for credit cards, consumer loans, and mortgages. It’s a simple interest rate, nothing complicated.

Now, about APY — this is a completely different story. When you hear about APY, you need to understand that it’s the annual percentage yield that accounts for the effect of compound interest. Here, interest is accrued not just once a year, but regularly — it could be daily, weekly, or monthly. And the most important part: these accrued interests are added to your principal, and in the next period, interest is calculated on the increased amount. It creates a snowball effect.

In the crypto ecosystem, APY is encountered constantly. When you stake tokens on a platform, they show you the APY because rewards are accrued regularly and summed up. The same applies to bank deposits or mutual funds. What is APY in the context of investing — it’s your real annual return, taking into account all the accruals.

The main difference is simple: if you see 15% APR on a credit card, that’s just 15% of your debt per year. But if you see 15% APY on a deposit, it means your actual income will be higher because interest is accrued more frequently and compounded. The more often interest is compounded, the greater the difference between APR and APY.

Here’s an example: suppose you invest $1,000. With 15% APR, that’s exactly $150 per year. But with 15% APY compounded daily, you’ll earn more because interest is added daily on the accumulated amount. That’s why understanding what APY is critically important for serious investors.

If you take your financial decisions seriously, always look at APY, not APR. It will give you a real picture of how much you will earn or spend. This is especially relevant in crypto, where there are many opportunities for staking and earning on deposits. The difference can be significant in the long run.