Recently, I’ve seen many newcomers in the community confusing the concepts of APR and APY. Actually, these two are quite different. Once you understand them, you can avoid a lot of pitfalls.

First, let’s talk about what APR is. Simply put, APR is the annual interest rate. It indicates the interest you can earn or have to pay on the money you put in or lend out over the course of a year. But here’s a key point—it does not calculate compounding. Imagine that you invest $1,000 into a project with a 10% annual interest rate. Under the APR method, at the end of the year you earn $100—only that much. It won’t automatically grow as time goes by. This simple-interest model is quite common in traditional finance, but it’s used relatively less in the crypto space.

So what about APY? This is what crypto investors really need to pay attention to. APY is the annual yield rate. Its key difference is—compounding is taken into account. When your earnings are automatically reinvested, that portion of earnings can keep generating returns too. That’s the power of compounding. Using the same $1,000 and a 10% annual rate, but compounding every day, over a year you’ll earn more than $100—higher by some amount. The difference may not seem big at first, but the higher the compounding frequency and the longer the time, the more obvious the gap becomes.

In the DeFi ecosystem and in crypto staking, APY is usually the standard. Because many protocols automatically compound your rewards daily, or even every hour. At that point, APY can reflect your actual returns more accurately. So when you’re choosing liquidity mining, staking, or lending products, what you should look at is APY—not APR.

Why distinguish between these two? To put it plainly, it’s so you won’t be misled by the numbers you see for returns. What APR is might look simple and straightforward, but it ignores the strongest “weapon” in crypto investing—compounding. If you see a product labeled as APR, that means there’s no automatic compounding mechanism, and the returns are fixed. But if it’s labeled as APY, that means the system will automatically compound for you, and your final returns will be higher.

In real practice, the choice isn’t complicated. If you want higher returns through compounding, look for investments labeled with APY—for example, Ethereum staking, or stablecoin lending pools. If you just want to clearly understand the direct interest of a loan product, APR is enough. But honestly, in crypto, most opportunities to make money are based on APY.

One detail worth noting is that the APY interest rates in the crypto ecosystem can change. Depending on the protocol’s mechanism or market demand, this number may fluctuate frequently, so don’t expect the interest rate to stay the same. Each time you look at a product, be sure to check whether it’s a fixed rate or a floating rate.

Also, some people ask why APY is usually higher than APR. The answer is in compounding. With the same principal and base interest rate, plus the magic of compounding, the final APY returns naturally exceed the APR returns. The more frequent the number of compounding periods, the bigger the difference.

Now many DeFi platforms and staking plans offer APY. For example, with ETH staking, BTC borrowing, and stablecoin mining, you can see the annualized yield. Some exchanges have also started rolling out similar products, giving users more choices.

Finally, one more thing: these figures are for reference only and do not constitute investment advice. Before putting real money in, you must do your own research first, and it’s best to consult professionals as well. No matter how enticing the returns look, you should understand where the risks are first.