Yearn - EURC Vault
This strategy deposits Circle's EURC — a MiCA-compliant euro stablecoin backed 1:1 by euro reserves in regulated European banks — into a Yearn Finance v3 vault. Yearn automatically allocates EURC across DeFi lending and liquidity strategies (e.g., Aave, Curve) to maximize yield, compounding returns into yvEURC vault shares that appreciate over time.
How Yearn's EURC vault works:
- Deposit EURC into the Yearn v3 vault
- Receive yvEURC tokens — ERC-4626 compliant shares representing your growing portion of the vault
- Yearn's smart contracts automatically allocate EURC to one or more yield strategies (lending, LP provision, etc.)
- Yields are harvested and compounded — the yvEURC/EURC exchange rate increases over time
- Withdraw at any time — no lock-ups; burn yvEURC to receive EURC plus accumulated yield
Yearn Finance is one of the oldest and most battle-tested DeFi protocols, launched in 2020. V3 vaults are ERC-4626 compliant and have been audited by ChainSecurity and yAudit. EURC is issued by Circle Internet Financial Europe SAS, licensed as an Electronic Money Institution under France's ACPR, with monthly third-party reserve attestations. EURC has a market cap near €300M and is available on Ethereum, Avalanche, Base, Solana, and Stellar.
Basic Information
Fundamentals
TVL
APR
Statistics
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| Period Start | N/A | N/A | N/A | N/A |
| Period End (inclusive) | N/A | N/A | N/A | N/A |
| APR | N/A | N/A | N/A | N/A |
| CAGR (APY) | N/A | N/A | N/A | N/A |
| TVL High | N/A | N/A | N/A | N/A |
| TVL Low | N/A | N/A | N/A | N/A |
Liquidity
Not calculated yet
Liquidity analysis will be available soon
Strategy
- Acquire EURC
- Obtain EURC via Circle Mint (institutional) or MiCA-compliant exchanges (Coinbase, Bitstamp, Bitpanda)
- Alternatively, swap on-chain from USDC or other stablecoins
- EURC is available on Ethereum, Avalanche, Base, Solana, and Stellar
- Deposit EURC into the Yearn vault
- Navigate to the EURC vault on yearn.fi
- Deposit EURC and receive yvEURC tokens (ERC-4626 vault shares)
- Your yvEURC represents a proportional claim on all vault assets plus accrued yield
- Earn automated yield
- Yearn allocates EURC across one or more strategies — lending on Aave, providing liquidity on Curve, or other yield sources
- Strategies are harvested periodically, compounding profits back into the vault
- The yvEURC/EURC exchange rate increases as yield accrues
- Displayed APY is net of all fees
- Withdraw at any time
- No lock-ups — redeem yvEURC for EURC plus accumulated yield at any time
- An optional "max loss" parameter protects against withdrawing during unrealized strategy losses
- Redeem EURC back to euros via Circle Mint or supported exchanges
Yield Source
Yield is generated by Yearn's automated strategy allocation. The vault deploys EURC into DeFi protocols that generate returns through lending interest, trading fees, and liquidity incentives. Yearn's strategists design and optimize these strategies, and the vault automatically shifts funds to maximize yield.
Potential yield sources:
- Lending protocols: EURC is supplied to lending markets (e.g., Aave) where borrowers pay interest — historically ~5% APY for EURC on Aave deployments
- Liquidity provision: EURC is deployed into DEX pools (e.g., Curve euro pools) to earn trading fees and liquidity mining rewards
- Strategy diversification: V3 vaults can allocate across multiple strategies simultaneously, balancing risk and return
- Auto-compounding: Harvested yields are reinvested back into the vault, compounding returns without manual intervention
Fee structure:
- Performance fee: Deducted from yield at harvest time (factory vaults: 10%, standard vaults: up to 20%)
- Management fee: Annual flat rate charged via share dilution at harvest (single-asset vaults typically 0%)
- Net APY: The displayed APY already accounts for all fees and compounding
Euro-denominated lending yields tend to be lower than USD equivalents due to less borrowing demand, but Yearn's automated optimization helps capture the best available rates across protocols.
Strategy Limits
Deterministic Constraints
- Performance fee (10–20%) is deducted from yield at each harvest
- Profits are distributed over a configurable unlock period (profit_max_unlock_time) rather than immediately
- Euro-denominated pools and lending markets have lower liquidity than USD equivalents
- EURC availability is limited to 5 chains — vault may only be on select networks
Probabilistic Constraints
- Lending rates fluctuate with borrowing demand — low demand for EURC borrowing reduces yield
- Strategy allocation depends on available DeFi opportunities for EURC, which is a smaller market than USDC/USDT
- Underlying strategies may face temporary unrealized losses, affecting withdrawal amounts
- Thin liquidity in euro pools may cause slippage during large deposits or withdrawals by the vault strategies
Underlying Assets/Allocations
100% EURC
Single-asset vault — EURC is deployed across multiple yield strategies by Yearn's allocation engine. Underlying strategy allocations vary dynamically based on available yields.
Risk Analysis
Potential Risks
Based on the Yearn vault documentation and EURC documentation:
- Smart Contract Risk (Yearn) - Despite audits by ChainSecurity and yAudit, v3 vault or strategy contracts could contain undiscovered vulnerabilities; the Dec 2025 yETH exploit demonstrates ongoing risk
- Strategy Risk - Underlying strategies interact with external protocols (Aave, Curve); failures, exploits, or insolvencies in those protocols would directly impact vault funds
- Unrealized Loss Risk - Strategies may experience temporary unrealized losses; withdrawing during such periods could result in receiving less than deposited
- EURC Issuer Risk - Circle insolvency or regulatory action could affect EURC's backing, though MiCA's segregated reserve rules provide legal protection
- EURC Smart Contract Risk - EURC includes compliance functions (freeze, blacklist) that Circle can execute, potentially restricting access to tokens
- Liquidity Risk - Euro-denominated DeFi markets have lower liquidity than USD; large vault rebalances or withdrawals may face slippage
- Yield Compression - Low borrowing demand for EURC can compress lending yields, reducing vault returns to near-zero in bearish markets
- Governance/Role Risk - Yearn's role-based access controls allow vault managers to adjust strategy allocations; misconfiguration could lead to suboptimal or risky deployments
- EUR/USD Exchange Rate Risk - For users whose base currency is not EUR, fluctuations in the EUR/USD rate affect the dollar value of the position
Risk Analysis (3rd Parties)
Summary
The Yearn EURC vault offers automated euro-denominated yield by deploying Circle's MiCA-compliant EURC stablecoin across DeFi lending and liquidity strategies. Yearn Finance is one of DeFi's most established protocols (since 2020), with v3 vaults audited by ChainSecurity and yAudit using the ERC-4626 standard. EURC benefits from strong regulatory backing — issued by Circle under French ACPR licensing with 100% segregated euro reserves and monthly attestations. However, euro DeFi markets are significantly shallower than USD equivalents, which may limit achievable yields and create slippage during large movements. The Dec 2025 yETH exploit (affecting legacy vaults, not v3) serves as a reminder of persistent smart contract risk in DeFi. Strategy risk is present as funds are deployed to external protocols. Users should consider the EUR/USD exchange rate exposure if their base currency is not EUR, and be aware that EURC includes compliance functions (freeze/blacklist) that Circle can execute.
See the Yearn v3 security audits: Yearn Security Documentation
Yearn v3 Audits: V3 vault contracts audited by ChainSecurity and yAudit (June 2023, 25-day review). ChainSecurity confirmed a "good level of security." yAudit found no critical vulnerabilities — minor findings related to ERC-4626 compliance rounding and role management were addressed. Yearn has operated since 2020 with billions in cumulative deposits.
EURC Regulatory Backing: EURC is issued by Circle Internet Financial Europe SAS, licensed as an EMI under France's ACPR (Banque de France). Fully MiCA-compliant with 100% euro reserves in segregated EEA bank accounts, monthly third-party attestations, and legal redemption guarantees at par value. Reserves are protected from Circle's insolvency by segregated account rules.
Yearn Track Record: Yearn Finance is one of the most established DeFi protocols, operating since July 2020. V3 vaults use immutable ERC-4626 contracts with well-defined role-based access controls. The protocol maintains an active security team and bug bounty program.
Historical Exploit: In December 2025, Yearn's yETH vault suffered a ~$9M exploit due to a misconfiguration in legacy (non-v3) contracts. While this did not affect v3 vaults, it highlights the ongoing smart contract risk inherent in DeFi, even for battle-tested protocols. Yearn subsequently enhanced monitoring and configuration review processes.
Strategy Risk: Yearn vaults depend on underlying strategies that interact with external protocols (Aave, Curve, etc.). A vulnerability or failure in any strategy's target protocol could impact vault funds. Strategy risk is somewhat mitigated by Yearn's multi-strategy architecture and debt allocation limits.
Euro Market Depth: EURC lending and liquidity markets are significantly shallower than USDC/USDT equivalents. This may limit vault strategy options and achievable yields, and could result in slippage during large strategy rebalances or user withdrawals.