High interest rates are one of the most noticeable ways to attract attention to a cryptocurrency product. Staking at 7% per year looks interesting; a liquidity pool offering 20% looks even more attractive. In contrast, an offer with an APR of several hundred percent inevitably raises the question: where do such numbers even come from?
Most often, alongside yield figures, you will see the abbreviation APR — Annual Percentage Rate. At first glance, everything seems simple: the higher the percentage, the greater the potential return. But in cryptocurrency, this figure does not always tell the whole story.
Let’s take a closer look at what APR shows, how it is calculated, why it can change within just a few days, and how it differs from the similar APY metric.
What is APR?
APR shows the potential annual return on an investment without taking compound interest into account. Simply put, it is a way to express the returns of different instruments as a standardized annual percentage.
The term itself appeared long before cryptocurrencies. APR has traditionally been used in banking products, lending, and other financial instruments. With the development of DeFi, the metric also made its way into the crypto market.
Today, APR can be found almost everywhere: in staking*, lending protocols, liquidity pools, farming*, and various yield-generating products.
* Staking is a way of earning rewards by participating in the operation of a blockchain based on the Proof-of-Stake consensus mechanism. A user locks or delegates coins to a validator, which participates in transaction validation and helps maintain the network. In return, the user receives rewards according to the rules of the specific blockchain.
* Yield farming is a way of earning income from crypto assets through DeFi protocols. A user deposits funds, for example, into a liquidity pool or lending service and receives a share of fees, interest, or additional tokens from these protocols. The level of such returns depends on the conditions of the specific protocol and may change significantly over time.
For example, a service offers to deposit 5,000 USDT at 15% APR. If the rate does not change throughout the year and the rewards received are not reinvested, the estimated return will be 750 USDT.
In other words, APR answers a fairly simple question: how much could an investment earn over a year if the current rate remained unchanged?
And the word “could” is especially important here.
In cryptocurrency services, APR is usually not a promise of a fixed return. It is more like a snapshot of the current situation. Demand changes, more liquidity enters the pool, fees decrease, or an incentive program ends — and yesterday’s 20% may turn into 12%, 7%, or even less.
Why APR is not a promise that you will earn exactly that much
Imagine a new DeFi protocol. To attract its first users, the project launches a generous rewards program. There is still relatively little money in the pool, so the APR may look impressive — for example, 200%, 500%, or even more than 1,000%.
But a high rate begins to attract capital. Liquidity increases, rewards are now distributed among a larger number of participants, and APR gradually declines.
That is why seeing a hypothetical 500% APR does not mean that your capital will increase sixfold over the course of a year. The main question is whether such a rate can remain at that level for any meaningful period.
It is also important to understand what exactly the yield is paid in.
If a protocol displays 50% APR but rewards are paid in the project’s own token, whose price falls several times over during that period, the final result may be far less attractive than the initial percentage suggested.
APR vs. APY: what is the difference?
Alongside APR, you will often see another similar abbreviation — APY (Annual Percentage Yield).
Both metrics describe annual returns, but they do so differently.
APR does not account for reinvesting the income received. APY does.
Suppose you invest 1,000 USDT and regularly receive rewards. If you keep those rewards separate, this follows the logic of APR.
If, however, you continuously add the earnings back to the principal, future interest begins to accrue not only on the original 1,000 USDT but also on the income earned earlier.
This creates the effect of compound interest.
Therefore, under identical initial conditions, APY will be higher than APR if rewards are regularly reinvested.
In practice, this is an important distinction. Two services may display similar percentages, but one may quote APR while the other quotes APY with frequent compounding. Comparing these figures directly without understanding the calculation method is not entirely correct.
How APR is calculated
The formula is fairly simple:
APR = (annual income/amount invested) × 100%
Suppose a user deposits 5,000 USDT into a liquidity pool at 15% APR.
If the rate remains unchanged throughout the year:
5,000 × 15% = 750 USDT
The estimated income will be 750 USDT.
If the funds remain in the protocol for only six months, the approximate calculation will be:
5,000 × 15% × 0.5 = 375 USDT
That is approximately 375 USDT.
However, this arithmetic works well only in an ideal world where the rate does not change.
If APR was 20% for the first two months, 14% for the next four months, and then fell to 8%, you cannot take today’s 8% and use it to estimate the entire past period. The income needs to be calculated separately for each time interval.
Why comparing projects based only on APR can be dangerous
APR has an obvious advantage: it allows you to compare several offers quickly.
Suppose one service offers 6% per year, another 9%, and a third 14%. Even from this single figure, you can already form an initial impression.
The problem begins when APR becomes the main or only selection criterion.
Imagine two products.
The first offers 8% APR, with the return generated by fees that users regularly pay to the protocol.
The second shows 50% APR, but most of the rewards are paid in newly issued tokens belonging to the project itself.
Formally, the second offer looks significantly more attractive. But the economic nature of those 50% is completely different. If the token falls in price, the high nominal return may quickly lose its meaning.
This is why a high APR is often less a gift to the investor than compensation for increased risk.
What determines APR in cryptocurrency?
In traditional financial products, an interest rate may be fixed in advance by contract. In DeFi, things often work differently.
APR can change depending on many factors:
the amount of liquidity in the protocol;
demand for loans;
trading activity;
the size of fees;
the number of participants;
the amount of tokens being distributed;
the parameters of a specific blockchain;
decisions made by the project community.
For example, in a lending protocol, high demand for a particular asset may increase returns for lenders. When demand falls, the rate decreases accordingly.
In a liquidity pool, the situation may be different: the more participants deposit funds, the more users the fee income has to be distributed among.
Therefore, APR should be viewed as a dynamic reference point, rather than a fixed characteristic of an investment product.
What about staking?
The logic is similar in staking, although the source of rewards is different.
Returns may depend on the rules of a particular network, the total number of coins being staked, the level of token issuance, and other parameters.
Sometimes the reward distribution mechanism may change as a result of community voting or a protocol upgrade.
Therefore, today’s 8% APR from staking will not necessarily remain the same six months from now.
* DCA (Dollar-Cost Averaging) is an investment strategy that involves investing the same amount of money in a selected asset at regular intervals regardless of the asset’s current market price. As a result, the investor buys more units of the asset when the price is low and fewer when the price is high, spreading entry points over time and forming an average purchase price.
However, APR itself is not tied to DCA in any way and can be used regardless of whether a user invests money once or regularly adds to a position.
With periodic investments, the calculation becomes slightly more complicated: each new amount remains invested for a different length of time.
For example, funds deposited in January will generate income for almost the entire year, while funds added in November will generate income for only around two months. Therefore, for an accurate calculation of returns, each such contribution is best considered separately.
What to check before chasing a high APR
A figure of several dozen or several hundred percent tells you almost nothing about the quality of an investment product on its own.
It is much more useful to ask several additional questions:
Where does the money used to pay the yield come from? Is it generated by actual user fees, lending interest, or additional token issuance?
What currency are the rewards paid in? Receiving 20% in USDT and 20% in a little-known token are far from the same thing.
How stable is the rate? The current APR may be the result of a temporary spike in activity.
Can the funds be withdrawn freely? High returns may come with a lock-up period or other restrictions.
What fees will need to be paid? This is especially important for small amounts and frequent reinvestment.
What risks does the protocol itself carry? Even the most attractive APR cannot compensate for losing funds due to smart contract issues, a hack, or a token price collapse.
APR is a useful number, but it does not show the whole picture
APR is indeed useful. It allows you to quickly understand the approximate level of potential returns and compare several offers.
But it should not be treated as a forecast of the final result.
APR shows the current annual rate without taking compounding into account. Still, it says nothing about whether that rate will remain unchanged, how reliable the source of the yield is, or what the actual financial result will be.
That is why it is better to look not only at the percentage itself, but also at what stands behind it.
Sometimes a stable 7–10% may turn out to be significantly more attractive than an eye-catching 100% per year — especially if the latter exists only until too many people start paying attention to it.