Overcollateralization in institutional crypto-backed lending
Overcollateralization in institutional crypto-backed lending
Overcollateralization is the core mechanism that lets a smart contract lend against crypto without ever performing a credit check: require collateral worth meaningfully more than the loan itself, and the buffer absorbs price volatility that would otherwise turn a perfectly good loan into an underwater one overnight.
How it works
The basic mechanic is simple: a borrower posts collateral worth more than the loan they're drawing. A $100,000 loan against $150,000 of ETH collateral sits at roughly 67% LTV, meaning ETH would need to fall by about a third before the position's collateral value drops to equal the loan itself. That buffer, the difference between collateral value and loan value, is what makes the loan collectable without anyone assessing the borrower's income, employment, or credit history: the collateral is the credit assessment.
Sizing that buffer correctly is where the real institutional work happens. The required overcollateralization ratio for a given asset isn't arbitrary; it's calibrated against that asset's historical volatility, its liquidity depth on the venues where it would actually need to be sold in a liquidation, and the operational latency between a liquidation trigger firing and the sale actually executing. A highly volatile, thinly traded token needs a much larger buffer than a large-cap asset with deep spot liquidity, because the buffer has to survive both the price move and the market impact of actually selling into a liquidation.
The tradeoff runs directly against capital efficiency. A higher required overcollateralization ratio means a borrower can draw less liquidity per dollar of collateral posted, which is safer for the lender but less useful for the borrower. Every institutional crypto lending desk is, in effect, constantly solving for the collateral ratio that maximizes safety without making the loan uneconomical for the borrower to actually want.
Why it matters
Overcollateralization is what makes crypto-collateralized lending viable without a credit bureau, a paycheck, or a legal system that can efficiently pursue a defaulted unsecured borrower across jurisdictions. The collateral is seized and sold automatically, by code, the moment the buffer is breached, which is a fundamentally different (and in some ways more reliable) enforcement mechanism than a traditional unsecured loan's recourse to courts and collections.
The buffer's adequacy is also the single most important variable in whether a lending market survives a genuine crisis. Every major DeFi lending failure traces back to some version of the same root cause: a collateral buffer that was sized for ordinary volatility, not for a fast, correlated, high-volume crash where liquidations couldn't execute quickly enough or deeply enough to fully recover the loan before the collateral's value collapsed further.
Where this shows up in Rekord
Rekord sets collateral requirements per asset based on that asset's specific volatility profile and DEX liquidity depth, not a single blanket ratio across every collateral type. For how those sizing decisions interact with origination and liquidation thresholds specifically, see LTV vs LLTV: origination threshold vs liquidation trigger.