Uniswap is expanding its protocol fee system to BNB Chain, Polygon, and Celo. A governance proposal posted on May 16th aims to activate fee collection and UNI token burning on these networks, bringing the total to 13 chains.
This is part of a phased rollout that began on Ethereum mainnet in December 2025. Fees are already live on nine other chains including Arbitrum, Base, and OP Mainnet.
How it works: On the new chains, the protocol fee is set at one-fifth of the pool fee. For a pool with a 0.30% swap fee, Uniswap takes 0.06%. Collected UNI tokens are bridged back to Ethereum mainnet and sent to a burn address, permanently removing them from circulation.
The Celo activation corrects a configuration error in a prior proposal. BNB Chain and Polygon are being onboarded with fresh infrastructure.
Governance moved quickly, bypassing the standard Request for Comment stage under the UNIfication framework, with strong community support in a Snapshot vote.
For liquidity providers on these chains, the one-fifth fee means a slightly smaller share of swap fees. Bridge security remains a key risk, as every new chain integration expands the potential attack surface.