What Impermanent Loss Is
Impermanent loss describes the reduction in value that liquidity providers experience when the price ratio of the two assets they deposited into an automated market maker (AMM) pool changes from what it was at deposit, compared to simply holding those same assets in a wallet.
Why It Happens
AMM pools maintain a constant product formula (x × y = k) between the two assets. When one asset’s price rises, arbitrageurs buy the now-underpriced asset from the pool until the ratio rebalances, which means the liquidity provider ends up holding less of the asset that appreciated — resulting in a shortfall versus simple holding.
| Price Change | Loss vs. Holding |
|---|---|
| 1.25x | 0.6% |
| 1.5x | 2.0% |
| 2x | 5.7% |
| 4x | 20.0% |
| 5x | 25.5% |
A Worked Example
As the table shows, if one pooled asset doubles in price relative to the other, the liquidity provider ends up with roughly 5.7% less value than if they had simply held both assets separately. The loss grows nonlinearly as the price divergence widens — quadrupling to 20% at a 4x price move.
Why It’s Called “Impermanent”
The loss is called impermanent because it disappears if the price ratio returns to what it was at deposit. However, if a liquidity provider withdraws while the price ratio is still diverged, that loss becomes permanent and realized — making the name somewhat misleading in practice.
Fee Income Can Offset the Loss
Liquidity providers earn a share of trading fees generated by the pool, and in high-volume pools this fee income can exceed the impermanent loss, producing a net gain. In low-volume pools, however, fee income may not be enough to offset the loss, leading to a net negative outcome.
Frequently Asked Questions
Does impermanent loss happen in stablecoin pools?
Pools pairing two assets whose prices are designed to stay pegged together, like stablecoin pairs, tend to experience minimal price divergence and thus very small impermanent loss.
Can impermanent loss be avoided?
Choosing highly correlated asset pairs, or using concentrated liquidity features to focus capital within a tighter price range, can improve fee efficiency, but neither eliminates the underlying risk entirely.
How can I check impermanent loss before depositing?
Many DeFi analytics tools and calculators let you simulate expected loss for a given price change, which is a useful step before committing capital to a pool.
Why does it matter more for long-term liquidity providers?
The longer capital stays in a pool, the greater the chance that the price ratio drifts significantly, so long-term providers need to weigh expected fee income against a wider range of possible price outcomes.
Key Takeaways
Impermanent loss grows as the price ratio of pooled assets diverges from the deposit-time ratio, and whether liquidity providing is net profitable depends on whether trading fee income outweighs that loss. This article is for informational purposes only and does not constitute investment advice.
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