Liquity is a decentralized borrowing protocol on Ethereum that allows users to draw loans in LUSD (a USD-pegged stablecoin) against ETH as collateral at 0% interest. Unlike competitors that charge ongoing APR, Liquity charges only a one-time borrowing fee paid upfront. It requires a minimum collateralization ratio of just 110% — dramatically more capital-efficient than MakerDAO’s typical 150%+ requirements. Launched in April 2021 by Robert Lauko and Rick Pardoe, Liquity is designed to be completely immutable (non-upgradeable, no admin keys, no governance). No one can change the protocol’s parameters — it runs entirely via algorithmic mechanisms.
Core Mechanics
The following sections cover this in detail.
Troves
- Deposit ETH → borrow LUSD → maintain ≥110% collateral ratio
- One-time borrowing fee (0.5%–5%, algorithmically determined by LUSD demand) + refundable $200 LUSD liquidation reserve
- No ongoing interest — a revolutionary design at launch
LUSD (Liquid USD)
- Soft peg: algorithmically maintained between $1.00 and $1.10 via redemptions/borrowing mechanisms
- Hard floor: anyone can always redeem 1 LUSD for $1 of ETH directly from collateral (bypasses AMM — redeems from lowest-ratio Troves first)
- Fully backed: backed solely by ETH (no dollars, no RWA, no multisig admin)
- Immutable: cannot be frozen, blacklisted (unlike USDC/USDT)
LQTY (Governance Token / Fee Token)
- Stake LQTY → earn ETH and LUSD fees from borrowing and redemption activity
- No voting, no admin power, no upgrade control
Stability Pool
- Users deposit LUSD into the stability pool
- When a Trove falls below 110% CR → liquidated → stability pool LUSD absorbs the debt, receives the ETH collateral at a discount (~10% gain for the pool)
- Stability pool depositors earn LQTY rewards + ETH gains from liquidations
Redemption Mechanism
Advantages
| Feature | Liquity | MakerDAO | Aave |
|---|---|---|---|
| Interest rate | 0% | Variable | Variable |
| Min collateral ratio | 110% | 130–150% | Varies |
| Governance | None | MKR holders | AAVE holders |
| Upgradeable | No | Yes | Yes |
| Collateral types | ETH only | Multiple | Multiple |
| Stablecoin | LUSD | DAI | No native stablecoin |
History
| Year | Events |
|---|---|
| 2020 | Robert Lauko and Rick Pardoe develop Liquity protocol; $6M funding from Polychain and others |
| Apr 2021 | Liquity mainnet launch; LUSD goes live; TVL grows to $2B+ within months |
| 2021 | Liquity becomes one of DeFi’s fastest-growing protocols; LQTY staking rewards attract capital |
| 2022 | Bear market tests stability: LUSD briefly depeg events during UST collapse, but redeems to peg |
| Jun 2022 | UST/LUNA collapse demonstrates LUSD’s strength — pure-crypto backing with no algorithmic death spiral risk |
| 2023 | Liquity v1 remains immutable; team develops Liquity v2 with multi-collateral support |
| 2024 | Liquity v2 mainnet: accepts staked ETH (wstETH, etc.) as collateral; introduces user-set interest rates |
Common Misconceptions
“LUSD is an algorithmic stablecoin like UST”
LUSD is collateral-backed, not algorithmic. Every LUSD is backed by at least $1.10 in ETH. The death-spiral mechanism that destroyed UST (which had no real collateral) cannot happen to LUSD — if LUSD falls below $1, ETH backing can always be redeemed.
“You don’t pay anything to borrow on Liquity”
There’s a one-time borrowing fee (minimum 0.5%) and a refundable $200 LUSD gas reserve. No ongoing interest, but the upfront fee is real.
Social Media Sentiment
Liquity is highly regarded among DeFi purists and crypto-native users who value genuine decentralization. The immutability and governance-free design are seen as ideologically pure: there are no multisig administrators who could be coerced or compromised. LUSD is considered the most censorship-resistant USD stablecoin because addresses cannot be blacklisted (unlike USDC and USDT). Security researchers frequently cite Liquity’s mechanism design as elegant. The v2 launch expanded capabilities while maintaining the core principles. Criticism focuses on ETH-only collateral limiting TAM (total addressable market) vs. multi-asset competitors.
Last updated: 2026-04
Related Terms
Sources
- Lauko, R., & Pardoe, R. (2021). Liquity: Decentralized Borrowing Protocol Whitepaper. Liquity.org.
- Coinbase Institutional. (2022). DeFi Stability Analysis: Examining Stablecoin Mechanisms Through Market Stress. Coinbase Research.
- DeFi Llama. (2024). Liquity Protocol Analytics: TVL History and Redemption Volume. DeFiLlama.com.