Idle Finance Review

How Idle Finance scores in yield aggregators

This entry rates Idle Finance's two vault products, Best Yield and Yield Tranches, in our yield aggregator ranking. The basis is desk research of Idle's documentation, its terms of service and the Idle-Labs GitHub repositories, checked on November 1, 2026. No deposit was made. The category uses five criteria, each marked 0 to 10 and weighted equally, as set out in our ratings methodology. One piece of context matters for every mark: idle.finance now carries an "Idle is now Pareto" banner, and the team's effort has moved to Pareto's credit products. The Idle vaults remain documented and are what this entry scores.

The overall score is the plain average: (8 + 5 + 9 + 6 + 6) / 5 = 34 / 5 = 6.8.

Four marks changed at this check, and the overall fell from 7.4. Strategy transparency fell from 7 to 6, because the previous entry said displayed APY was net of fees, and Idle's own FAQ says the headline APY is gross. Licence & code openness fell from 8 to 5 once we read the idle-tranches repository, which holds the product Idle now maintains. Fee disclosure moved from 9 to 8 because the docs list performance fees only and never state that other fees are zero. Custody & control rose from 4 to 6 on the tranches no-lock statement and the terms' no-control language.

Strongest criteria: audits and fee figures

Audit disclosure scores 9. Idle's audit page is a dated table: scope, auditor and a report link for every row. Quantstamp reviewed governance (November 2020) and Best Yield (April 2021). Consensys Diligence and Certik reviewed the first tranches (2021). Hats Finance and Hans Friese reviewed tranches v2 (2023), and Hans Friese reviewed Pareto's credit vaults four times in 2024. The mark stops at 9 because most of the recent work comes from one individual reviewer and covers the credit vaults rather than every tranche variant now in the repository.

Fee disclosure scores 8. Unlike peers that publish a range, Idle names the fee for each product: 10% on Best Yield and on Lido stETH tranches, 15% on stMATIC, Instadapp, Morpho, Clearpool and Amphor tranches. The fee is charged on yield only. Best Yield computes it from the difference between the average price you paid for idleTokens and the price at redemption, and the fee debt moves with the tokens if you transfer them. A worked example: a 50 DAI gain on Best Yield costs 5 DAI in fees.

Weakest criteria: licence, displayed APY and custody

Licence & code openness at 5 reflects two repositories pointing in different directions. Best Yield's idle-contracts carries the Apache 2.0 text, but that repository was last updated in January 2022. Yield Tranches lives in idle-tranches, which was updated as recently as November 2026. It has no LICENSE file, its core IdleCDO.sol contract declares "UNLICENSED," and its package.json says MIT. Under the rubric, a missing file and contradictory headers on the live code outweigh the older Apache file.

Strategy transparency at 6 is a measured finding, not an omission. Idle documents what its vaults do well: Best Yield's off-chain allocator, rebalancing roughly every three hours on Ethereum, and the Adaptive Yield Split that divides tranche returns between Senior and Junior classes. On fees, though, the tranches FAQ says the APY displayed is a spot gross return and that the realized APY "already counts the performance fee." A depositor who reads the headline figure sees a return before a 10% or 15% cut.

Custody & control at 6 rests on two statements: no locking periods or epochs on tranches, and the terms' line that Idle DAO LLC does not control, manage or custody users' assets. The terms apply to the interface, though, and say the protocol is not operated by the LLC. The docs also describe pauses. A tranche pauses automatically when an underlying market loses funds, and stMATIC withdrawals wait two to three days for unstaking.

What the score does not cover

• APY levels, which depend on the lending markets underneath. Our guide to how DeFi lending works explains how those rates move.
• Whether Idle's vaults will keep being maintained after the move to Pareto, and the proposed IDLE-to-PAR token conversion.
• Pareto's Credit Vaults, which lend to whitelisted borrowers and require identity checks; they are not part of this entry.
• Eligibility: the terms bar US persons and several other jurisdictions.

Idle Finance vs Beefy and Pendle

Beefy scores 8.4, ahead on licence, audits, custody wording and a net-of-fee APY, and level on fees. Pendle scores 7.4, level with Idle on fees, audits, custody and strategy transparency and ahead on licence, 8 to 5. Peer marks are as currently published and may change as those entries are rechecked.

Who it suits

The score suits a depositor who wants an exact, per-product performance fee and a dated, linked audit trail, and who is comfortable reading the realized APY rather than the headline figure. It suits less well anyone who needs a clear licence on the actively maintained contracts, or certainty that the vaults will stay a focus now that the team has turned to Pareto.