How Does 40 Acres Work?
40 Acres is a DeFi lending protocol that enables veNFT holders from Aerodrome and Velodrome to take self-repaying, non-liquidating loans in USDC. Voting rewards from the locked veNFT positions automatically repay the loan over time, while a USDC lending vault earns yield from origination fees and a share of voting rewards. With approximately $22M TVL and a novel lending mechanism adapted from Alchemix's self-repaying model, its B- risk grade reflects the dependency on Aerodrome/Velodrome reward flows and the inherent illiquidity of veNFT collateral, balanced by the non-liquidating design that protects borrowers.
TVL
$28M
Sector
Lending
Risk Grade
B-
Value Grade
C-
Core Mechanisms
6.1.1
NovelSelf-repaying, non-liquidating loans collateralized by veNFTs from Aerodrome and Velodrome — voting rewards automatically repay the loan over time
Novel lending mechanism: veNFT holders borrow USDC against their locked vote-escrow positions, and the protocol automatically directs voting rewards to repay the loan. Non-liquidating design means positions are never forcibly closed. Similar to Alchemix's self-repaying model but applied to veNFTs specifically.
6.2.4
Fixed fee structure — 0.8% origination fee plus 1% of rewards and 20% of voting rewards directed to lenders
Standard fixed-rate fee model. No variable interest rates — costs are predictable at loan origination.
2.2.4
Revenue split — 5% of voting rewards to protocol treasury, 20% of voting rewards to USDC lending vault depositors, 1% fee on all rewards
Standard split revenue model distributing income between treasury, lenders, and protocol operations.
5.4.1
Multisig governance for protocol operations and upgrades
Standard multisig governance. No on-chain token-weighted governance system documented.
6.1.4
USDC lending vault (ERC4626) that underwrites all veNFT-backed loans
Standard ERC4626 tokenized vault for USDC deposits. Serves as the single lending pool for the protocol.
How the Pieces Interact
Loan repayment depends entirely on voting reward flows from Aerodrome and Velodrome. If these platforms reduce emissions, change reward structures, or experience declining activity, loan repayment timelines extend indefinitely, trapping lender capital in non-performing loans.
veNFTs are non-fungible, vote-locked positions that cannot be efficiently liquidated. Unlike fungible token collateral that can be sold on DEXes, veNFT liquidation requires finding a buyer for a specific locked position at a fair price, which may be impossible during market stress.
A single USDC vault underwrites all loans. If large veNFT holders borrow heavily and rewards decline, the vault faces concentration risk where a significant portion of deposited USDC is locked in slow-repaying loans, reducing withdrawal liquidity for vault depositors.
Multisig controls protocol parameters including fee structures, loan terms, and vault operations. A compromised multisig could modify terms to extract value or lock user funds.
What Could Go Wrong
- Self-repaying loans depend on the continuous flow of veNFT voting rewards from Aerodrome/Velodrome. If these platforms reduce rewards or change their emission schedules, loan repayment timelines extend or stall, leaving borrowers with longer-than-expected debt exposure.
- veNFT collateral is inherently illiquid — these are non-fungible, vote-locked tokens that cannot be easily liquidated at fair value if a borrower defaults or the underlying DEX reward structure changes.
- Governance via multisig creates centralization risk. Protocol upgrades, fee changes, and operational decisions are controlled by a small group of signers rather than token-weighted governance.
- The USDC lending vault underwrites all loans. If multiple large veNFT holders borrow simultaneously and reward yields decline, the vault could face a liquidity crunch where depositors cannot withdraw.
Aerodrome Emission Decline Freezes Self-Repaying Loan Mechanism
ModerateTrigger: Aerodrome or Velodrome reduce veNFT voting rewards by >50% through governance decisions, emission schedule changes, or declining protocol revenue, causing 40 Acres loan repayment timelines to extend beyond 2 years
- 1.Aerodrome governance votes to reduce emissions or Velodrome activity declines significantly, cutting veNFT voting rewards by >50% — Self-repaying loans on 40 Acres slow dramatically — loans that were expected to repay in 6 months now take 12+ months
- 2.USDC vault depositors observe declining yields as loan repayment revenue slows — Vault APY drops below competitive rates, prompting depositors to request withdrawals
- 3.Vault utilization rate spikes as deposits are withdrawn while outstanding loans continue to occupy capital — Remaining depositors face reduced withdrawal liquidity as most USDC is locked in slow-repaying loans
- 4.New borrowing demand declines as the self-repaying mechanism becomes unattractive with extended timelines — Protocol enters decline spiral with shrinking TVL, reduced revenue, and potential vault illiquidity
Risk Profile at a Glance
Overall: B- (33/100)
Lower score = safer