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Fee overview

Makx pools have two independent fee layers. Both are charged on ETH (the base currency of every pool).

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LP fee

Fixed at 0.3% per pool, set at pool initialization and never changed. Goes entirely to liquidity providers — including the vault’s LP position. The hook contract overrides this value on every swap to ensure it stays consistent.

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Hook fee

Set by the token creator at launch via hookFeeBps. Charged as a flat bps fee on ETH on every swap:
  • ETH → Token: Deducted from ETH input before reaching the pool. Pool only sees ethIn - hookFee.
  • Token → ETH: Deducted from ETH output before the trader receives it.
Hook fees accrue in launchFeeBalance and are claimable by the creator via claimFees(). The creator can update their hookFeeBps at any time by calling setHookFee(launchId, newBps). The protocol caps the maximum at maxHookFeeBps.

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Protocol cuts

The protocol takes a share of several actions:
ActionParameterWho pays
Hook fee claimadminFeeBpsToken creator
LP fee collectionadminCollectLpFeeBpsToken creator
Rent depositadminPayRentFeeBpsToken creator
Liquidation surplus ETHadminLiquidationFeeBpsLiquidator
Vault depositfeeBps (vault)Depositor
Vault redeemfeeBps (vault)Withdrawer
All protocol fee parameters are denominated in BPS and configurable by the protocol owner. The vault fee is capped at 1000 BPS (10%).

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Claiming fees

While the launch is Active and outside the grace period: 
// Claim accumulated hook swap fees
claimFees(uint256 launchId)

// Collect Uniswap V4 LP trading fees
collectLPFees(uint256 launchId)
Fee claims are blocked once the launch enters the grace period. Accrued fees are preserved during the grace period — they are not lost. Once the launch is extended past the grace period, claims resume. If the launch is liquidated without the creator reclaiming fees, all accumulated hook fees go to the liquidator.

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Rental fees

Rental is not a “fee” in the traditional sense — it is the cost of borrowing ETH liquidity. See Launch a Token for how feePerSecond and bondAmount are calculated. 
feePerSecond = bondAmount × feeRateBps / 10_000 / annualizedBasis
Rental payments flow to the vault as interest, raising the share price for METH holders.