Earning rewards by providing liquidity or staking tokens across DeFi protocols, often moving between platforms for the highest returns.
Yield farming is the practice of deploying cryptocurrency across DeFi protocols to earn maximum returns — typically by providing liquidity to AMM pools, lending assets, staking tokens, or participating in liquidity mining programs. Yield farmers often pursue complex multi-step strategies: deposit stablecoins into a lending protocol, borrow against them, use the borrowed assets in a liquidity pool, and stake the LP tokens for additional rewards — potentially earning yield at multiple levels. 'DeFi Summer' 2020 popularized yield farming when Compound launched its COMP token distribution, triggering a wave of protocols offering token incentives to attract liquidity. While yields can be extraordinary (100%+ APY), they come with proportional risks: impermanent loss, smart contract exploits, token price depreciation, and the risk that high yields attract so much capital that returns diminish. Sustainable yield ultimately comes from real protocol revenue (trading fees, lending interest), not from inflationary token emissions.
Yield farming involves deploying crypto assets across DeFi protocols to maximize returns through a combination of trading fees, lending interest, and token reward incentives. Farmers move capital between protocols seeking the highest yields — a practice that can generate impressive returns but requires active management and carries significant risk. Strategies range from simple (depositing stablecoins in a lending protocol for 5-10% APY) to complex (leveraged looping, multi-protocol yield stacking, and liquidity provision across multiple pools simultaneously). The 'yield' in yield farming comes from three potential sources: protocol fees (swap fees for LPs, interest for lenders), token emissions (new tokens distributed as incentives), and governance token appreciation. Emission-based yields are typically unsustainable long-term — when incentives end, capital leaves and yields collapse. Risks include smart contract exploits, impermanent loss, liquidation of leveraged positions, and 'rug pulls' from unaudited protocols.
During DeFi Summer 2020, some Yearn Finance vaults offered 100%+ APY by automatically rotating deposited funds between lending protocols (Aave, Compound, Curve) to capture the highest available yields.
Sustainable yields have compressed significantly from the 100%+ APYs of early DeFi. Realistic yields for major protocols are 3-15% on stablecoins and 5-20% on volatile pairs. Higher yields exist but carry proportionally higher risk. The best risk-adjusted farming strategies focus on established protocols with real fee revenue rather than emission-dependent incentives.