Recently, I noticed that many people confuse APR and APY, even though these indicators greatly affect the actual return on investments. Let's understand why this is important, especially if you're involved in staking or working with deposits.

Let's start with the basics. APR is simply the annual percentage rate in its pure form, without accounting for compound interest. If a bank or platform says it offers 15% annually through APR, it only means a simple interest on your principal amount. Nothing more. That’s why APR is often used in credit cards, consumer loans, and mortgages. It’s the simplest metric for calculation.

But here’s the interesting part. When it comes to cryptocurrency staking, deposit accounts, or investment funds, everything works differently. Compound interest is involved, and this is where APY is a completely different level. APY shows the actual annual return, taking into account how often interest is compounded. If interest is compounded daily or monthly, it’s added to the principal, and in the next period, you earn interest on the interest. This is exponential growth, not linear.

A practical example: a credit card with 15% APR is just 15% on the principal debt amount. But an investment account with 15% APY is a whole different story. If interest is compounded daily, by the end of the year, you’ll earn noticeably more than 15%. That’s why, when choosing between two offers, you should look at APY, especially when it comes to investments.

Frequency of compounding is key. If interest is compounded once a month, the difference between APR and APY will be modest. But if daily? Then APY can be significantly higher. In crypto, where daily compounding is often used, this is especially noticeable.

That’s why investors and those working with staking should always look at APY, not APR. APY is a more honest indicator of how much you will actually earn. When evaluating returns, forget about simple interest and focus on APY, which accounts for compound interest. In the long run, this difference can be quite significant for your portfolio.