Yearn Finance — How Auto-Yield Vaults Work
Yearn Finance is the original DeFi yield aggregator. Deposit a token, receive a yToken, and let battle-tested strategies automatically route your capital to the highest-yielding opportunities across Curve, Aave, Compound, and beyond.
Vault Flow Animation
When you deposit DAI into a Yearn vault, the vault controller allocates your capital across multiple strategies simultaneously. Each strategy targets a different protocol, harvests rewards, and auto-compounds — all without requiring any action from you.
Animated flow: DAI enters the vault, strategies allocate to Curve/Aave/Compound, rewards harvest, and yield flows back as compounded returns.
Vault Strategy Comparison
A single Yearn vault may run several strategies in parallel, each with different risk/yield profiles. The vault controller allocates capital dynamically based on available APY and debt ratios.
Curve LP Strategy
Deposits into Curve stable pools, earns CRV emissions boosted via Yearn's veCRV holdings, plus trading fees. Most capital-efficient for stablecoins.
- Earns CRV + pool trading fees
- Boosted APY via locked veCRV
- Auto-sells CRV for more DAI
Aave Lending Strategy
Supplies DAI to Aave v3, earns variable borrow interest from borrowers. Extremely liquid, no impermanent loss, exits instantly at will.
- Variable lending APY from borrowers
- AAVE token incentives when active
- Instant liquidity, no lock-up
Compound Leverage Strategy
Supplies DAI to Compound, borrows against it to re-supply — creating a leveraged loop to maximize COMP token emissions. Higher yield, higher complexity.
- Recursive supply/borrow loop
- COMP token emissions harvested
- Liquidation risk if borrow rate spikes
yToken Price Mechanics
When you deposit DAI, you receive yDAI tokens. These are not pegged 1:1 to DAI — instead, the yDAI price increases over time as the vault earns yield. Your balance stays the same, but each yDAI is worth more DAI. Redeeming your yDAI at any point returns your principal plus all accrued yield.
Your yDAI balance never changes — only the exchange rate rises. This design means vault deposits are fungible ERC-20 tokens you can transfer, LP with, or use as collateral in other protocols.
Fee Structure & Net APY Calculator
Yearn charges two fees: a 2% annual management fee on total assets (covers protocol overhead) and a 20% performance fee on profits (paid to the protocol treasury and strategists). Understanding how these compound matters for realistic return expectations.
Net APY Calculator
Net APY = Gross × (1 − 0.20) − 2%. At high gross APYs, the absolute yield still exceeds doing nothing.
Frequently Asked Questions
What is Yearn Finance and how does it work?
Yearn Finance is an automated yield aggregator on Ethereum. Users deposit tokens (like DAI or USDC) into a Yearn vault and receive yTokens in return. The vault's strategy contracts deploy the deposited capital across multiple DeFi protocols simultaneously — such as Curve Finance for LP fees, Aave for lending interest, and Compound for token incentives. Smart contracts harvest these rewards automatically and reinvest them, compounding yield without any manual action. The yToken exchange rate rises over time, reflecting accumulated yield.
What are the risks of using Yearn vaults?
Yearn vault risks include: smart contract vulnerabilities in Yearn's own contracts or the underlying protocols (Curve, Aave, Compound); strategy risk if a specific yield strategy loses money or gets exploited; liquidity risk if the underlying protocol has withdrawal delays; and regulatory risk. Yearn has been audited multiple times and has maintained strong security since its 2020 launch, but no DeFi protocol is risk-free. Always deposit only what you can afford to lose.
How does Yearn's yToken price mechanism work?
When you deposit 1,000 DAI into the yvDAI vault, you receive yDAI tokens at the current price-per-share (e.g. 1.05 DAI per yDAI = ~952 yDAI). As the vault earns yield, the price-per-share increases — so your 952 yDAI might be redeemable for 1,100 DAI after a year. Your yDAI token balance never changes; only the redemption rate increases. This makes yTokens fully fungible and composable — they can be used as collateral in other DeFi protocols.
How do Yearn's 2% management and 20% performance fees work?
The 2% management fee is charged annually on your deposited balance — it's taken continuously from the vault, not at withdrawal. The 20% performance fee is taken from profits only, before they are compounded back into the vault. So if the vault earns 25% gross APY, you receive 80% of profits (20% net gross) minus 2% management fee, resulting in roughly 18% net APY. Both fees go to the Yearn treasury, which funds protocol development, security, and pays strategists.