# Custom Fee Tiers

Pool creators can now specify **any static LP** fee from 0% to 100% in increments of 0.0001% (hundredths of a bip). Additionally, pools support dynamic fees that can change in real time via hooks.

This enables unlimited fee tiers: multiple pools can exist for the same token pair with different fees (or the same fee but different hooks), allowing the market to discover optimal fees for different use cases (e.g., stablecoin pairs at very low fees, volatile pairs at higher ones).

### Key Fee Types

* **Static LP fees** — Set at pool creation (any value, e.g., 0.01%, 0.25%, 4.9 bps, etc.). These accrue to LPs.
* **Dynamic LP fees** — The base fee can be updated periodically or overridden per swap via a hook. Marked with a special flag at creation; immutable afterward.
* **Protocol fees** — A portion of swap fees (governance-configurable) that can go to the protocol.
* **Hook fees** — Entirely custom fees implemented by the hook contract (separate from LP fees). These can be used for monetization, penalties, etc.


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