Uniswap Labs Proposes Expanding Protocol Fees Across v3 Pools and New Chains

• Uniswap Labs proposed a tier-based v3OpenFeeAdapter so protocol fees apply across all v3 pools by fee category.
• The proposal expands v2/v3 protocol fees to Arbitrum, Base, Celo, OP Mainnet, Soneium, X Layer, Worldchain, and Zora.

Uniswap Labs has introduced an active governance proposal to broaden protocol fee collection across Uniswap v3 pools and additional networks. The temp check uses the UNIfication fee-update process, moving to a five-day Snapshot vote before an onchain vote. If approved, the update would activate protocol fees for remaining v3 pools on the Ethereum mainnet and extend fee settings beyond the current scope. The post remains open for comments.

Proposal for expanding protocol fees is live 🦄

This update would turn on fees for all remaining v3 pools on mainnet and activate protocol fees for v2 and v3 on eight new chains https://t.co/H4GgQcGIeu

— Uniswap Labs 🦄 (@Uniswap) February 18, 2026

Since UNIfication went live in late December, Uniswap governance has gradually enabled fees on v2 and many v3 pools on the Ethereum mainnet. The proposal says the staged rollout supported protocol monitoring. It also describes a burn system that converts collected fees from many tokens into UNI and then burns the UNI. Last month, Uniswap Labs launched Continuous Clearing Auctions on Arbitrum One, enabling onchain token auctions, real-time clearing price discovery, and automatic Uniswap v4 liquidity seeding. CNF noted that the mechanism clears bids in each block at a single uniform price using maximum-price bids, thereby reducing last-minute sniping. Uniswap Labs Adapter and Chain Rollout Plan The proposal would activate protocol fees for both v2 and v3 on Arbitrum, Base, Celo, OP Mainnet, Soneium, X Layer, Worldchain, and Zora. On each chain, fees would be routed to a TokenJar deployed on that network. For L2 networks, the UNI set aside for burning would be bridged back to the Ethereum mainnet and sent to the 0xdead address, using chain-specific releaser contracts. Uniswap Labs also proposes enabling protocol fees on all v3 pools through a tier-based v3OpenFeeAdapter. The current v3FeeAdapter requires governance to manage the fees pool by pool and maintain lists of pools and fee levels. The new adapter would set a default protocol fee for each liquidity provider fee tier. Governance would still be able to override fees for specific pools. The specification outlines deployments and governance transfers for TokenJar, releasers, and the v3OpenFeeAdapter on each network and on the mainnet. On L2s, the adapter would become the v3 factory owner for applying tier defaults. After approval, v2 protocol fee recipients would be set to TokenJar addresses, while mainnet v3 ownership would be routed through the adapter.  Because GovernorBravo limits proposals to 10 actions, the plan calls for two parallel onchain votes. One would cover the mainnet fee controller plus Base, OP Mainnet, and Arbitrum, while the other would cover Celo, Soneium, Worldchain, X Layer, and Zora. Last week, Uniswap also announced a partnership with Securitize Markets to bring BlackRock’s USD Institutional Digital Liquidity Fund (BUIDL) shares to UniswapX for trading. The integration uses Uniswap’s RFQ framework, and access is limited to whitelisted investors, according to the announcement. At the time of reporting, UNI price fell over 4% over 24 hours to $3.36 after an earlier spike above** $4**.