Impermanent Loss: The Hidden Risk for Liquidity Providers
Yield farming sounds like a dream: deposit tokens, sit back, and collect fees. But there is a silent predator in every liquidity pool called Impermanent Loss (IL). If you don't understand IL, you might realize at the end of the year that you would have made more money by doing absolutely nothing.
What is Impermanent Loss?
Impermanent Loss happens when the price of the tokens you provided to a pool changes relative to when you deposited them. The larger the price change, the larger the loss.
Is it really "Impermanent"?
The loss is only "impermanent" as long as you keep your tokens in the pool. If the prices return to exactly where they were when you deposited, the loss disappears. However, if you withdraw your tokens while the prices are different, the loss becomes Permanent.
The Math: Why You Lose Money
Liquidity pools use the AMM Formula. When the price of ETH goes up, arbitrageurs pull ETH out of the pool and put USDC in.
- The Result: You now own less of the expensive asset (ETH) and more of the cheaper asset (USDC) than you did at the start.
The Standard IL Table:
- 2x price change: 5.7% loss compared to holding.
- 3x price change: 13.4% loss.
- 5x price change: 25.5% loss.
Strategies to Mitigate Impermanent Loss
1. Stablecoin Pairs
Pools like USDC/USDT have near-zero price divergence, meaning near-zero IL. This is the safest way to "farm" fees.
2. High Trading Volume
IL is only a problem if the Trading Fees you earn are lower than the loss. In a very busy pool, you might earn 20% in fees, which easily covers a 5% IL.
3. Correlation is Key
Provide liquidity for assets that move together (e.g., WBTC and renBTC). If they both go up 10%, there is zero IL.
Conclusion
Impermanent loss is the "Price of Admission" for being a market maker. Always check the Yield Farming APY to ensure the rewards are worth the risk.
Calculate the Damage
Before you withdraw, see exactly how much you've "lost" to price divergence with our Impermanent Loss Calculator.