ether.fi is the largest liquid restaking protocol by TVL, holding $3.3B in restaked ETH across Ethereum, Arbitrum, Base, Linea, and Blast. Launched in 2023, it issues eETH and weETH — non-custodial receipts for positions on EigenLayer — and has since expanded into consumer products with the ether.fi Cash card and Liquid vaults. This review examines the protocol’s mechanisms, security profile, competitive standing, and risks.
What it is
ether.fi sits in the liquid restaking token (LRT) category, enabling users to deposit ETH and receive liquid tokens that represent restaked positions on EigenLayer. eETH accrues rewards via daily rebases, while weETH is a non-rebasing wrapper for DeFi composability. Beyond core restaking, the protocol has built a payments stack — notably the ether.fi Cash card, which leverages restaked ETH as collateral — and Liquid vaults for optimised yield. Governed by the ether.fi DAO and the ETHFI token, the protocol remains non-custodial, with node operators handling the underlying AVS security on EigenLayer. As of 2026, it operates on five chains and holds the largest TVL among LRTs.
How it works
Users deposit ETH into the ether.fi staking contract. The protocol allocates deposits to a curated set of EigenLayer node operators, who restake the ETH to secure Actively Validated Services (AVSs) such as EigenDA, bridges, and oracles. In return, depositors receive eETH, which increases in value daily as rewards accrue. For integration with DeFi protocols that prefer stable balances, weETH wraps eETH into a non-rebasing token that increases only in price, mirroring the rewards without supply changes.
The ether.fi DAO, through ETHFI governance, selects and monitors node operators, sets parameters for AVS allocations, and upgrades the protocol. The Cash card product uses a smart-contract-powered linkage that allows users to spend against their restaked ETH, settling via an off-chain payment network integrated with the card issuer. Liquid vaults automate yield strategies across multiple AVSs and chains. No contract addresses from the facts are available to cite; the protocol does not disclose a specific multisig setup in the provided data.
Key numbers
- TVL: ~$3.3B (DeFiLlama, as of 2026-07-15).
- Chains: Ethereum, Arbitrum, Base, Linea, Blast (5).
- Audits: Three firms — Certik, Nethermind, Solidified.
- Launch: 2023.
No further metrics (fees, revenue, user counts) are provided in the facts blob.
Security and audits
ether.fi has undergone three public audits by Certik, Nethermind, and Solidified. No security incidents have been reported since launch. The protocol is governed by the ether.fi DAO, which controls upgrades and operator selection through the ETHFI token. While the specific implementation of upgradability and multisig signing is not detailed in available data, the DAO structure suggests that changes require on-chain voting.
Risk is amplified by the protocol’s reliance on EigenLayer’s smart contracts and the performance of selected AVSs. An exploit or governance failure at the EigenLayer level could cascade to ether.fi depositors. The Cash card integration adds off-chain components and payment network exposure, expanding the attack surface beyond pure DeFi. Regular audits and a clean incident record are strong indicators, but the protocol’s 2023 launch means it has only about three years of live battle-testing.
Strengths
1. Market-leading LRT TVL: $3.3B in restaked ETH gives ether.fi dominant liquidity in the category, making its eETH/weETH tokens widely integrated across DeFi.
2. Multi-chain availability: Presence on five chains — including L2s Arbitrum and Base — increases accessibility and yield opportunities for users.
3. Consumer product expansion: The Cash card and Liquid vaults differentiate ether.fi from pure restaking protocols, creating potential revenue streams beyond EigenLayer rewards.
Weaknesses and risks
1. EigenLayer / LRT-sector dependency: The protocol’s yield and security model is entirely reliant on EigenLayer; any incident or governance issue there would directly harm ether.fi. The April 2026 Kelp DAO exploit (~$292M), which hit a peer liquid-restaking protocol, underscores the smart-contract and depeg risks that pervade the LRT sector even though ether.fi itself was not affected.
2. Smart contract surface: Despite three audits, the rapid addition of features like the Cash card and vaults introduces new code paths that may not have the same level of testing as the core contracts.
3. Governance concentration risk: While DAO-governed, large ETHFI holders or a small number of node operators could potentially influence outcomes. No on-chain vote statistics are available to assess decentralisation depth.
How it compares
ether.fi competes with other liquid restaking protocols and indirectly with liquid staking giants. Among direct LRT peers, Renzo Renzo holds ~$0.1B TVL and operates on multiple chains, but ether.fi’s ~$3.3B TVL and Cash card position it as the category leader. EigenLayer EigenLayer, the underlying restaking infrastructure, has ~$5.1B TVL but issues no liquid token; ether.fi provides liquidity and consumer tools on top.
When measured against the broader liquid staking landscape, Lido Lido commands ~$17B in TVL with stETH, an LST without native restaking exposure. ether.fi’s eETH offers both staking and restaking yields, which can be superior but at the cost of higher smart contract complexity. ether.fi’s 5-chain footprint is narrower than Lido’s Ethereum-only but broader than most LRTs, and its audits stack (Certik, Nethermind, Solidified) is competitive but lacks the volume of Aave Aave (Trail of Bits, OpenZeppelin, Certora). ether.fi’s TVL is roughly half that of Morpho Blue Morpho Blue (~$7B), though the categories differ.
Verdict
ether.fi has established itself as the largest liquid restaking protocol by TVL, with a sound audit record and no known exploits. Its expansion into consumer payments via the Cash card and multi-chain deployment adds utility beyond pure restaking. However, the protocol’s heavy dependence on EigenLayer and the relative novelty of its ancillary products inject risk. The ~$3.3B TVL and clean security track record warrant a rating of 8.0, with upside contingent on sustained adoption of restaking and successful consumer product execution.