Impermanent Loss Explained โ The Hidden Cost of Providing Liquidity in DeFi 2026
Impermanent loss is the difference between holding two tokens in a liquidity pool vs just holding them in your wallet. When the relative price between the two changes, arbitragers rebalance the pool โ leaving liquidity providers with fewer of the appreciating asset. At a 2ร price move it's ~5.7%; at 4ร it's ~20%; at 10ร it's ~42%. It's called 'impermanent' because if the price returns to its original level, the loss disappears โ but in practice the loss often becomes permanent.
This guide explains exactly how impermanent loss arises in constant-product AMMs like Uniswap V2, when it matters and when it doesn't, how to estimate it with our interactive simulator, and four strategies to minimize it. By the end you'll know whether providing liquidity makes sense for your portfolio.
Updated May 2026. Math applies to Uniswap V2-style xยทy=k pools; V3 concentrated liquidity has a different (often worse) IL profile.
What exactly is impermanent loss?
Imagine you deposit 1 ETH + 2,000 USDC into a Uniswap V2 pool when ETH is at $2,000. You receive LP tokens representing your share. The pool maintains x ยท y = k โ its constant-product invariant. Now ETH rallies to $3,000 on Coinbase. Arbitragers spot the gap, buy ETH from your pool (which still prices it at $2,000) and sell on Coinbase. They keep doing this until the pool's price matches $3,000.
After arbitrage, the pool no longer has 1 ETH + 2,000 USDC. It has less ETH and more USDC, mathematically calibrated to the new price. Your LP share, when you withdraw, gives you maybe 0.816 ETH + 2,449 USDC = $4,898 total. If you'd just held the original 1 ETH + 2,000 USDC, you'd have $3,000 + $2,000 = $5,000. The $102 gap is impermanent loss โ 2.0% of the HODL value.
Try the interactive impermanent loss simulator
Numbers tell only half the story. Use our interactive Uniswap V2 simulator to drag the external ETH price slider and watch your LP value vs HODL value diverge in real time. The simulator runs the exact x ยท y = k math โ no approximation.
๐ Open the Impermanent Loss tab in the Uniswap V2 simulator and slide the price from $500 to $8,000 to see the curve.
The impermanent loss formula
The closed-form IL ratio for a 50/50 constant-product pool is:
IL = 2 ร โ(priceRatio) / (1 + priceRatio) โ 1
Where priceRatio is the new price divided by the original price. Key reference points: 1ร price move = 0% IL, 1.5ร = 2.0%, 2ร = 5.7%, 3ร = 13.4%, 4ร = 20.0%, 5ร = 25.5%, 10ร = 42.5%.
The function is symmetric โ a price drop to 0.5ร produces the same 5.7% IL as a doubling to 2ร. The shape is also surprisingly steep: most of the IL comes from the first 3ร of move, then diminishing.
Why is it called 'impermanent'?
If the relative price returns to where it was when you deposited, IL goes to zero. In a sideways-trading pair (think USDC/USDT, or two stablecoins) IL is effectively always zero โ that's why stable pairs are popular among yield-seekers.
But in practice, IL becomes permanent the moment you withdraw. If you withdraw while ETH is up 4ร from your entry, you crystallize the 20% loss vs HODL. The 'impermanent' label is technically correct but misleading โ for many real positions, IL is just 'loss with extra steps'.
Do fees compensate for impermanent loss?
Sometimes. The 0.3% fee on every swap accrues to LPs. On high-volume pools like USDC/ETH on Uniswap V2, daily fee yield can hit 0.2-1% of pool value โ annualized 70-300% APY in fees alone. If price stays close to your entry, fees easily beat IL. If price moves 3ร+, fees rarely cover.
Net rule of thumb: in a trending market, LPs lose to HODLers (IL exceeds fees). In a sideways market, LPs beat HODLers (fees no IL). Pick LP positions where you expect range-bound price action.
V2 vs V3 โ concentrated liquidity changes the IL math
Uniswap V3's concentrated liquidity dramatically increases IL when price moves outside your chosen range. Inside the range, your effective leverage is high โ you earn more fees but also amplify IL. Outside the range, your position becomes 100% of the worse-performing token (one side fully converted).
A V3 ETH/USDC position with range $1,800-$2,200 deposited at $2,000 will have ~25ร higher IL than V2 when ETH moves to $2,500. Capital efficiency cuts both ways. Try the V3 simulator and watch what happens when you slide the price outside your set range.
4 strategies to minimize impermanent loss
- Pick correlated pairs. ETH/stETH, USDC/USDT, BTC/WBTC โ these pairs move together, so IL stays near zero and fees compound steadily. The best risk-adjusted LP positions are often the boring ones.
- Use stable-stable pools. USDC/USDT, DAI/USDC โ IL is effectively zero, yields are 5-15% APY. Curve, Uniswap V3 stable pools, and Maverick are designed for this.
- Pick wide V3 ranges if you're not actively managing. Range of ยฑ50% around spot will rarely go out of range, sacrificing some efficiency for sleep.
- Use IL-protected products. Some protocols (Bancor, formerly THORChain) offer IL insurance for a fee. Math is rarely in your favor over long horizons but exists for specific use cases.
When does providing liquidity make sense?
Three scenarios: (1) Stable pairs with high volume โ boring but profitable; (2) Yield-farming the protocol's own native token where rewards exceed expected IL; (3) Pairs where you would buy more anyway during dips (LP positions force-buy the falling asset).
When NOT to LP: speculative altcoins, pairs you expect to trend hard, anything with thin liquidity, or any position you can't monitor weekly. For most beginners, learning DCA + HODL first beats LP positioning. LP is a power-user strategy.
Frequently asked questions
+Is impermanent loss the same as losing money?
Only if you compare to HODL. LP positions can still be profitable in absolute terms โ earning fees while modestly losing vs HODL. The 'loss' is opportunity cost, not absolute loss, unless the underlying pair drops to zero.
+Can I avoid impermanent loss completely?
Only by not providing liquidity. Even stable-pair pools have small IL during de-peg events (e.g. USDC dropped to $0.87 briefly in March 2023). The goal is to MINIMIZE IL, not eliminate it.
+Does impermanent loss happen on every DEX or just Uniswap?
Every constant-product AMM (Uniswap, SushiSwap, PancakeSwap, Raydium, etc.) has IL. Different curve designs (Curve's StableSwap, Balancer's weighted pools) have different IL profiles but none eliminate it.
+Does IL affect concentrated liquidity differently?
Yes โ V3 concentrated liquidity dramatically amplifies IL when price moves outside your range. Inside the range you earn more fees AND take more IL. Pick V3 ranges only if you can actively manage them.
+Can I see my impermanent loss in real time?
Yes โ tools like APY.vision, RevertFinance, and DeBank track IL for your LP positions automatically. They use your historical deposit prices and current pool state to compute it.
+What's the worst-case impermanent loss?
Unbounded in theory. If one token in the pair drops to zero, your LP position becomes 100% of the now-worthless token. Holding a single stablecoin (USDT/USDC), in contrast, has limited downside. This is why pair selection matters.
+Is yield farming worth it if IL eats the gains?
Sometimes โ when the farmed token's emissions are high relative to expected IL. The strategy works best on stable pairs (low IL) with high reward emissions. On volatile pairs, math is rarely favorable over long horizons.
+How do liquid-staking tokens (stETH, jitoSOL) interact with LP?
LSTs paired with their underlying asset (e.g. stETH/ETH) have near-zero IL because they trade tightly correlated. These pools earn staking yield + LP fees with minimal IL โ one of the better risk-adjusted LP plays.
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