In May 2020, Compound began distributing a new token, COMP, to anyone who lent or borrowed on its platform. Within five months, total value locked across DeFi grew from $800 million to $10 billion, a period that became known as “DeFi Summer.” Uniswap’s monthly trading volume went from $169 million to over $15 billion in that same window, nearly a hundredfold increase, a genuinely staggering shift in how quickly capital could move once the right incentive existed. That’s where the term “yield farming” was born, and understanding what actually happened during that period explains both the real opportunity and the real risk baked into the practice today. That moment is the best place to start answering “what is yield farming?”
What Is Yield Farming? The Basic Mechanism
Yield farming means depositing crypto into a DeFi protocol, as a lender, a liquidity provider, or a staker, in exchange for a return. The “farming” metaphor is apt: you’re planting capital and harvesting a yield from it, rather than letting it sit idle. Unlike traditional investing, where return typically comes from a single source, price appreciation or a fixed interest rate, yield farming often stacks multiple return streams on top of each other simultaneously, which is exactly what made the eye-catching APY figures during DeFi Summer possible.
Where the Yield Actually Comes From
This is the distinction most beginner explanations skip, and it’s the most important one: yield generally comes from two genuinely different sources. Base yield comes from real economic activity, trading fees paid by actual traders, or interest paid by actual borrowers, and tends to be modest but sustainable. Incentive yield comes from a protocol distributing its own token as a bonus to attract deposits, exactly what Compound did with COMP, and its sustainability depends entirely on that token holding its value as more of it gets issued over time. Neither source is inherently better or worse, they’re just fundamentally different bets: base yield bets on the protocol continuing to see real usage, while incentive yield additionally bets on the distributed token holding or growing in value even as more of it enters circulation.
A Simple Example
Depositing a stablecoin into a lending protocol earns a base interest rate paid by borrowers, straightforward and relatively stable. Providing liquidity to a trading pair on a decentralized exchange earns a share of trading fees, plus, on many protocols, an additional layer of bonus token rewards on top, the incentive yield that made “DeFi Summer” famous, with some platforms briefly advertising rates exceeding 1,000% APY. Those triple-digit figures were almost never sustainable in the way a traditional interest rate is; they reflected a temporary subsidy, funded by newly created tokens, designed specifically to attract capital during a protocol’s early growth phase rather than a durable, ongoing return.
Yield Farming vs Just Holding
Simply holding an asset captures its price movement alone. Yield farming adds an additional return on top, but that additional return isn’t free, it comes with additional risk: smart contract exposure, the complexity of managing a position, and, in many cases, exposure to a bonus token whose price can fall considerably faster than the yield accumulates. This is worth internalizing clearly: a headline APY of 200% sitting alongside a token that’s fallen 90% in value can still leave you with less than you started with, even though the yield number itself was technically accurate the entire time.
| Yield Source | Where It Comes From | Sustainability |
|---|---|---|
| Trading fees | Real activity from actual traders | Generally sustainable |
| Lending interest | Real payments from actual borrowers | Generally sustainable |
| Token incentives | Protocol’s own token emissions | Depends on token price and emission rate |
The Risks Worth Knowing
The Risks and Rewards of DeFi: Is It Worth It? covers DeFi’s general risk profile; yield farming adds a specific one on top, Impermanent Loss Explained: The Hidden Risk covers a mechanism unique to providing liquidity that catches many first-time farmers off guard.
Understanding yield farming conceptually is step one. Evaluating a specific opportunity honestly is the real skill.
The Crypto/DeFi Trading Course covers how to actually tell sustainable yield from subsidized yield before committing capital.
Is Yield Farming Still Relevant Today?
Yes, though the landscape has matured considerably since 2020’s triple-digit-APY frenzy. Modern incentive programs tend to be more targeted and time-limited than DeFi Summer’s early free-for-all, with protocols increasingly designing emissions to taper over time rather than inflate indefinitely. Real, sustainable yield opportunities, tied to genuine trading and lending activity rather than pure token subsidy, remain a meaningful part of DeFi’s value proposition even after the specific extremes of 2020 faded. The core practice remains a legitimate, widely used part of DeFi; the unsustainable extremes of 2020 were the exception, not the norm going forward.
Preguntas frecuentes
Is yield farming the same as staking?
Related but distinct. Staking vs Yield Farming: What’s the Difference? covers this specifically, staking typically involves securing a network directly, while yield farming covers a broader range of activities.
Why were 2020’s yield farming returns so much higher than today’s?
Early incentive programs were often generously and indefinitely funded, before protocols had learned how quickly unsustainable emissions could collapse a token’s price and, with it, the real value of the advertised yield.
What happened to the sky-high yields from DeFi Summer?
They collapsed as the underlying token emissions diluted supply faster than demand could absorb, a predictable outcome of unsustainable incentive structures rather than a sudden, unexpected market shift.
Can I lose money yield farming even if the APY is positive?
Yes, if the underlying assets, particularly a bonus incentive token, lose value faster than the yield accumulates, or if a smart contract issue affects the protocol you’re using.
How can I tell if a yield is sustainable or subsidized?
Check what’s actually generating the return: a yield tied mainly to trading fees or interest is generally more durable than one dominated by a bonus token, especially a newly launched one with limited trading history.
Do I need a lot of capital to start yield farming?
No, though network fees make very small positions impractical on some chains. Starting with a modest amount to learn the mechanics is a reasonable approach before committing significant capital.
Yield farming isn’t a trick or a loophole, it’s a genuinely different way of putting capital to work, with a genuinely different risk profile than simply holding. Understanding where the yield actually comes from, not just how high the number looks, is what separates an informed decision from chasing whatever’s currently trending. That single habit, asking where a yield actually originates before asking how big it is, would have saved a considerable number of DeFi Summer participants from the losses that followed the initial excitement. Once you understand what is yield farming at the mechanism level, a flashy APY stops being enough to convince you.
Ready to evaluate yield opportunities with real confidence? The Crypto/DeFi Trading Course teaches exactly that.
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