infiniFi Review 2026: Staked and Locked iUSD Yield

infiniFi is a stablecoin yield protocol on Ethereum, Base and Monad. Users deposit stablecoins to mint iUSD, then stake or lock it to earn yield from strategies the protocol manages. DefiLlama lists it in its Yield category with about $70.2 million in TVL and a listing date of May 2025.

The project presents itself as a bank rebuilt on-chain. Its argument is that individual DeFi users cannot easily reach the higher yields available in CeFi and TradFi, and that matching liquid and locked deposits lets it close that gap. The homepage advertises up to 8% APY for staking and up to 12% APY for locking, and compares a 7.4% projected liquid return with Aave, Ethena and Pendle.

DefiLlama lists two audits and no token. The homepage promotes an INFI airdrop registration and a points program, so a token may be planned, but the project does not confirm details.

You deposit stablecoins, mainly USDC, and receive iUSD, a receipt token. The protocol puts the deposits to work across yield strategies, including DeFi protocols, tokenized credit and real-world assets, and shares the yield among depositors.

You choose how liquid you want to be. Staking iUSD lets you withdraw at any time and is backed by liquid strategies. Locking iUSD for a chosen period earns more, because locked funds can support longer-term, higher-yield positions.

This resembles fractional-reserve banking: not every deposit is held as instantly available cash, and the locked portion lets the protocol hold less liquid assets. The project says it does this with transparent reserves and no leverage.

The project does not include a fee schedule. The homepage does not state deposit, withdrawal or performance fees, so net yield may differ from the advertised APY figures.

Users should check the official docs and the app before depositing. Network gas fees on Ethereum, Base or Monad also apply to transactions.

DefiLlama lists two audits, and the homepage links to security and audits and a risk framework page. A security contest listing on Cantina also appears in public reporting. The project does not name the auditors or give findings, so read the reports directly.

Deposits are exposed to smart-contract risk, the risk of the underlying DeFi protocols, and credit and counterparty risk from tokenized credit and real-world assets. Because the design is fractional-reserve, redemption speed depends on how liquid the strategies are. The project does not mention any incidents or regulatory status.

infiniFi is aimed at stablecoin holders comfortable with DeFi who want higher yield than simple lending and understand the tradeoffs between liquidity and lock-up. It is less suited to anyone who needs a guaranteed return or treats a stablecoin deposit as a bank account.