What is Yield Farming?
Yield farming is the practice of lending or providing liquidity to decentralized finance (DeFi) protocols in exchange for rewards. Farmers move their assets between protocols chasing the highest yields — hence the term “farming.”
The concept exploded in summer 2020 — known as “DeFi Summer” — when Compound launched its COMP governance token and distributed it to users who supplied liquidity. Within months, total value locked in DeFi went from $1 billion to $15 billion as farmers chased ever-higher yields.
Unlike traditional savings accounts that pay 0.5-4% APY, yield farms can offer 10-100%+ APY during bull markets. But these numbers come with significantly higher risk.
How Yield Farming Works
Yield farming involves several strategies, often stacked on top of each other:
1. Lending
Deposit assets into lending protocols like Aave or Compound. Your assets are borrowed by other users who pay interest. The protocol takes a small cut.
- Supply USDC → earn 4-8% APY from borrowers
- Supply ETH → earn 1-3% APY (lower demand to borrow)
2. Liquidity Providing
Deposit token pairs into AMM pools like Uniswap or Curve. You earn trading fees (typically 0.05-1% per trade) proportional to your pool share.
- Deposit ETH/USDC into Uniswap → earn ~15-30% APY from fees
- Deposit USDT/USDC into Curve → earn ~5-10% APY (low IL risk)
3. Liquidity Mining (Token Rewards)
Many protocols incentivize early liquidity by distributing their native governance tokens to LPs. This is where yields get crazy.
- Provide liquidity on Uniswap V3 → earn UNI tokens on top of trading fees
- Stake LP tokens on Curve → earn CRV rewards
- Compound this with Yearn → auto-compound rewards
4. Leveraged Farming
Protocols like Alpha Finance and Abracadabra let you leverage your positions. You borrow against your LP tokens to provide more liquidity, amplifying both yields and risks.
The Curve Wars
One of the most fascinating yield farming stories is the Curve Wars. Curve Finance uses a veCRV system where CRV holders lock their tokens for up to 4 years to boost their voting power. Protocols compete to accumulate veCRV to direct CRV emissions toward their own liquidity pools.
This created an entire meta-economy:
- Convex Finance accumulated so much veCRV it became the “Curve controller”
- Various DeFi protocols bribed CVX holders to vote in their favor
- Votium emerged as a marketplace for buying votes
Real Yields vs Token Yields
A critical distinction in yield farming:
| Type | Example | Sustainability | Risk |
|---|---|---|---|
| Token emissions | COMP, CRV, UNI rewards | Unsustainable — tokens dilute over time | Token price crash wipes out gains |
| Real yield | Trading fees, interest payments | Sustainable — backed by actual economic activity | Lower APY but more stable |
During DeFi Summer, most 100%+ APYs were token emissions. When those tokens crashed 80-90%, many farmers ended up with losses despite “high yields.”
Risks of Yield Farming
- Impermanent Loss: When providing liquidity, if token prices diverge significantly, you may end up with less value than simply holding.
- Smart contract risk: Every protocol you interact with is a potential attack vector. Over $10 billion has been lost to DeFi hacks since 2020.
- Liquidation risk: In leveraged farming, a price swing can trigger liquidation of your collateral.
- Token inflation: Protocol reward tokens are often inflationary. As more tokens are minted, existing tokens lose value.
- Gas costs: On Ethereum L1, each farming transaction costs $5-50+. Small farmers get eaten by gas fees.
- Rug pulls: New farming protocols can be exit scams. Anonymous teams drain the liquidity pool after attracting deposits.
Yield Farming on Layer 2s
High gas fees on Ethereum pushed farming to L2s:
- Arbitrum: GMX, Radiant, Camelot
- Optimism: Velodrome, Beethoven X
- Base: Aerodrome, BaseSwap
L2 farming offers similar yields with 90% lower gas costs, making it accessible to smaller accounts.
Frequently Asked Questions
Q: What’s a good yield farming APY? A: Sustainable “real yields” (from fees and interest) typically range from 5-20% APY. Anything above 50% is likely subsidized by token emissions and carries higher risk.
Q: How much do I need to start yield farming? A: On L2s, you can start with $100-500. On Ethereum mainnet, gas fees mean you need at least $5,000-10,000 for farming to be profitable after fees.
Q: Is yield farming worth it? A: During bull markets, yes — especially on L2s with low fees. During bear markets, many farms return less than just holding stablecoins in a savings account.