Collateral Factor, LTV and Liquidation Threshold in DeFi Lending
— By Tony Rabbit in Tutorials

Collateral factor, LTV and liquidation threshold in DeFi lending are the three numbers that decide how much you can borrow and when you get liquidated. This guide explains each one, the safety buffer between them, and a worked example.
Collateral factor, LTV and liquidation threshold in DeFi lending are the three risk parameters that determine how much you can borrow against your deposit and the exact point at which the protocol sells your collateral. The collateral factor (also called max LTV) caps how much you can borrow when you open a position. Your current LTV is the live ratio of debt to collateral value as prices move. The liquidation threshold is the higher LTV ceiling where a liquidator is allowed to repay part of your debt and seize your collateral. Understanding all three, and the gap between them, is what separates a position that survives volatility from one that gets wiped out.
Key Takeaways
- Max LTV (collateral factor) caps your borrowing at the moment you open a position.
- The liquidation threshold is a higher ratio where liquidation becomes possible.
- The gap between max LTV and the threshold is your buffer against price swings.
- Current LTV rises automatically when collateral falls or debt grows, even if you do nothing.
The three parameters: collateral factor, LTV and liquidation threshold in DeFi
Each asset listed on a lending protocol carries its own set of risk parameters set by governance. They sound similar but they do different jobs.
Collateral factor / max LTV is the borrowing limit at the moment you open a position. If ETH has a max LTV of 80%, you can borrow up to 80 cents of value for every dollar of ETH you supply. The protocol will not let you borrow past this line. On Aave this is labeled max LTV; on Compound the equivalent is the collateral factor. They mean the same thing in practice.
Current LTV is the live ratio of your borrowed value to your collateral value. It is not fixed. It moves every block as oracle prices change. Borrow more, and it rises. Your collateral drops in price, and it rises too, without you touching anything.
Liquidation threshold is the higher LTV at which your position becomes eligible for liquidation. If the threshold for ETH is 82.5%, then once your current LTV climbs to that level, a liquidator can step in, repay some of your debt, and take an equivalent slice of your collateral plus a bonus. For a fuller breakdown of what happens at that moment, see our guide to DeFi liquidation versus bad debt.
Why the gap between max LTV and the threshold is your safety buffer
Notice that max LTV (80%) is lower than the liquidation threshold (82.5%). That gap is deliberate. It is the cushion the protocol gives you so that a small, normal price move does not instantly liquidate a freshly opened position.
If you borrow right up to the 80% max LTV, you are already only 2.5 percentage points away from liquidation. A modest dip in your collateral price pushes you over the edge fast. Borrowing conservatively, say to 50% LTV, leaves a much wider band of price movement before the threshold is reached. The buffer is not a feature you activate. It is simply the room you choose to leave by borrowing below the cap.
The size of the gap varies by asset. Volatile or thinly traded tokens get a wide gap and low limits because their prices can gap down violently. Blue-chip collateral and stablecoins get tighter, more generous numbers. This is closely related to how protocols use borrow caps and supply caps to contain risk across the whole market.
Worked example: deposit, borrow, and the price drop that liquidates you
Numbers make this concrete. Say ETH trades at 2,000 USD with a max LTV of 80% and a liquidation threshold of 82.5%.
You deposit 5 ETH, worth 10,000 USD. Your max borrow is 80% of that, or 8,000 USD. Borrowing the full amount would be reckless, so you borrow 5,000 USD of a stablecoin instead. Your current LTV is 5,000 / 10,000 = 50%. Comfortable.
Now ETH falls. Your debt stays at 5,000 USD, but your collateral value shrinks. The price at which your LTV hits the 82.5% threshold is the level where collateral value equals debt divided by 0.825, so 5,000 / 0.825 = 6,060 USD of collateral, which is an ETH price of about 1,212 USD. Below roughly 1,212 USD per ETH, your position is liquidatable.
Had you borrowed the full 8,000 USD instead, the liquidation collateral value would be 8,000 / 0.825 = 9,697 USD, an ETH price of about 1,939 USD. A 3% dip would liquidate you almost immediately. Same collateral, same parameters, wildly different survival range, all decided by how much you chose to borrow. To practice taking out a loan safely, walk through our step-by-step Aave borrowing tutorial.
How isolation mode and e-mode change your limits
Modern protocols add modes that reshape these three numbers for specific situations.
Isolation mode applies to newer or riskier assets. When you supply an isolated asset as collateral, you can only borrow approved stablecoins, up to a strict debt ceiling, and you cannot mix it with other collateral. The point is to contain damage if that asset misbehaves, so its max LTV and threshold are deliberately conservative.
Efficiency mode (e-mode) does the opposite for correlated assets. If your collateral and your borrow move together, for example two stablecoins or two ETH derivatives, e-mode raises the max LTV and liquidation threshold dramatically, sometimes above 90%. Because the two prices track each other, the risk of a sudden divergence is low, so the protocol can safely offer a tighter buffer and far more borrowing power. The tradeoff is that e-mode only works within a single correlated category. For a deeper look at how these mechanics differ across platforms, compare Aave versus Compound.
How to stay out of liquidation range
Surviving a volatile market is mostly about respecting the buffer rather than maxing it out.
Borrow well below your max LTV. Treating 50% as a personal ceiling on an 80% asset gives you a large band of price movement before trouble. Watch your current LTV, not just your max, because it climbs on its own when collateral falls. Prefer less volatile collateral, since a stablecoin or blue chip is far less likely to gap into the threshold than a small-cap token. Keep spare collateral or stablecoins ready so you can top up or repay when prices slide. And remember that borrowing against a single concentrated asset multiplies your risk if that one token tanks.
These habits sit on top of the broader hazards covered in our overview of collateral risks in DeFi lending and the full mechanics in our Aave lending and borrowing tutorial for 2026. The parameters are not your enemy. They are a contract that tells you exactly how much room you have, if you bother to read them before you borrow.
This article is for educational purposes only and is not financial advice.