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What Is Collateral Factor?
The collateral factor is the DeFi risk number that sets your borrowing ceiling — and ignoring it is how you lose your collateral.
The collateral factor is the percentage of your deposited collateral’s value that a DeFi lending protocol will let you borrow against. Deposit $1,000 of ETH into a protocol with a 75% collateral factor, and your borrowing ceiling is $750. The number looks small and boring in the UI. It is neither.
That one percentage decides how much you can borrow, how much room you have before liquidation, and how badly a market dip can hurt you. Compound and Venus call it the collateral factor. Aave calls the same thing LTV. And behind it sits a second, higher number — the liquidation threshold — that most beginners never notice until it costs them their deposit.
So the collateral factor is where every DeFi borrow really begins. This guide covers what it means, how the math works, why the number changes by asset, and how to borrow without ever meeting a liquidation bot.
Key Takeaways
- A 75% collateral factor means you can borrow up to 75% of your deposit’s current market value.
- Liquidation is triggered by the liquidation threshold, a separate and higher percentage than the collateral factor.
- Protocol governance can lower a collateral factor while your loan is open, which shrinks your safety margin without warning.
- Borrowing at 40-60% of your collateral value, instead of the maximum, is the simplest way to survive price swings.
What the Collateral Factor Actually Means
Every lending protocol assigns each asset a collateral factor, usually shown as a percentage like 75% or a decimal like 0.75. Multiply your collateral’s current market value by that number and you get your maximum borrowing capacity.
So the math is one line. Deposit $1,000 worth of ETH at a 75% collateral factor, and you can borrow up to $750 in other assets. Deposit $5,000, and the ceiling becomes $3,750. The protocol recalculates this constantly as prices move.
One naming note before anything else. Protocols use different labels for the same parameter. Compound and Venus Protocol say “collateral factor.” Aave says “LTV,” short for loan-to-value. Switch between protocols and the word changes, but the concept does not. The full naming mess gets its own section below.
Why can’t you borrow the full value of your collateral? Because DeFi lending has no credit scores, no identity checks, and no legal recourse if you walk away. The only thing protecting lenders is the collateral itself. So every loan must be overcollateralized — you always deposit more value than you borrow. The gap between your collateral and your loan is the protocol’s insurance policy against price drops.
That gap exists so the protocol can sell your collateral in time if the market turns. Understanding how that buffer works, and how thin it can get, is the whole point of the sections that follow.
How the Collateral Factor Sets Your Borrowing Limit
The calculation itself is simple. Borrow limit = collateral value × collateral factor. A $2,000 WBTC deposit at a 70% collateral factor gives you a $1,400 ceiling. Borrow $1,400 of USDC against it and you are at the maximum from day one.
But the collateral value side of that equation is alive. If WBTC drops 10%, your collateral is now worth $1,800 and your ceiling shrinks to $1,260 — while your $1,400 debt stays exactly where it was. Your loan did not grow. Your permission to hold it did.
Now the part most people miss. The collateral factor is not the point where you get liquidated. Three layers stack on top of each other. First, the collateral factor sets your initial borrowing ceiling. Second, the liquidation threshold sits above it — that higher percentage is where the protocol actually starts selling your collateral. Third, the gap between the two is your safety margin, the room you have between “cannot borrow more” and “being liquidated.”
Here is how those layers look for two common collateral types.
| Asset example | Collateral factor and liquidation threshold |
|---|---|
| ETH | 75% collateral factor, 83% liquidation threshold — an 8-point safety margin |
| USDC | 85% collateral factor, 88% liquidation threshold — a 3-point margin, workable only because the price barely moves |
Notice the pattern. The more an asset’s price can move, the wider the margin governance builds in, because liquidators need time to act before a falling price outruns them.
Why does anyone borrow near these ceilings? Usually to put the borrowed funds to work — a common loop is borrowing stablecoins against ETH to chase yield farming returns elsewhere. That strategy lives or dies on how much headroom you leave under the collateral factor. Thin headroom plus a volatile market is how farming loops end in liquidation.
Collateral Factor vs LTV vs Liquidation Threshold — Clearing Up the Naming Mess
DeFi’s biggest beginner trap here is vocabulary, not math. You read a guide that says “collateral factor,” open Aave, and see “LTV” instead. Then a “health factor” appears next to it. None of these labels explains itself, and half of them describe the same thing.
Compound calls the borrowing ceiling the collateral factor. Aave calls it LTV, the maximum loan-to-value ratio. Venus Protocol sticks with collateral factor. Same parameter, three interfaces. The liquidation threshold is the genuinely different number — a separate, higher percentage where the protocol can start selling your collateral.
This table maps each label to its plain-English meaning.
| Protocol term | What it means in plain English |
|---|---|
| Collateral factor (Compound, Venus) | The maximum share of your collateral’s value you can borrow |
| LTV or max loan-to-value (Aave) | The same borrowing ceiling under a different name |
| Liquidation threshold (Aave) | The higher percentage where forced selling of your collateral begins |
| Health factor (Aave UI) | A live safety score for your whole position, derived from the liquidation threshold |
Aave’s health factor deserves one extra beat, because it confuses almost everyone. It is calculated from the liquidation threshold, not from the LTV. Roughly, it divides your liquidation-threshold-weighted collateral value by your total debt. A health factor above 1.5 is comfortable. At 1.0, liquidation begins. If your UI shows 1.05, you are not fine — you are one small candle away from losing collateral.
And here is the misconception worth naming directly. Many beginners assume that hitting the collateral factor triggers liquidation. It does not. Hitting the collateral factor just means you cannot borrow more. Liquidation waits at the liquidation threshold, which is always higher. On Aave, ETH might carry an 80% LTV but an 83% liquidation threshold — a 3-point cushion between the two events. Everything in the safety section below is about keeping that cushion wide.
Why Different Assets Have Different Collateral Factors
Open any lending market and you will see ETH at 75-80%, stablecoins at 80-85%, and some small-cap token sitting at 40% — or at zero. Those numbers are not random. They are set by protocol governance, usually on recommendations from professional risk-analytics firms like Gauntlet and Chaos Labs, who model how each asset behaves under stress.
Four variables drive the decision. Price volatility comes first. The more an asset can move in an hour, the lower its collateral factor, because the protocol needs more room to sell before the loan goes underwater. On-chain liquidity is next. If liquidators cannot dump a large position without crashing the price, the buffer has to widen. Market cap and oracle reliability round out the picture. A token with thin price feeds is a token the protocol cannot value with confidence.
Stablecoins sit at the top of the range for one reason. USDC or DAI at 85% works because their price barely moves, so a 15% buffer covers almost any realistic scenario. A volatile small-cap at 85% would be a bad-debt machine.
Some assets get a collateral factor of exactly zero. You can deposit them to earn yield, but you cannot borrow against them at all. That is governance saying the asset is too risky to secure anyone else’s money.
The freshest example of this logic is liquid staking tokens. stETH, wstETH, and rETH are now accepted collateral on major protocols, but their collateral factors sit slightly below raw ETH’s. They carry everything ETH carries plus one extra risk — the token can trade below the value of the ETH backing it during market stress. Governance prices that de-peg risk into the number.
The Risk Nobody Mentions — Governance Can Change Your Collateral Factor Mid-Loan
Most borrowers assume the terms are locked once they deposit. They are not. The collateral factor on your asset is a governance parameter, and the protocol’s DAO can vote to lower it at any time — including while your loan is open. Adjusting collateral factors downward is a normal risk-management move when markets turn volatile or a new weakness shows up in an asset.
Compound v3 makes the mechanics of this visible because it splits the parameter in two, a design outlined in Compound’s documentation. The borrow collateral factor sets how much new borrowing your collateral supports. The liquidation collateral factor, set higher, decides when positions get liquidated. Governance can cut the borrow collateral factor without instantly liquidating anyone, because existing borrowers live in the gap between the two numbers.
But that gap is exactly what a governance cut consumes. If you borrowed near the old ceiling and the DAO lowers it, your position can turn illiquid overnight — you cannot borrow another cent, and you sit meaningfully closer to the liquidation trigger than when you signed up.
> A governance vote will never ask your permission before tightening the parameters on your open loan. If you run a large position, the protocol’s governance forum is required reading, not optional.
This risk bites hardest for people borrowing at the maximum to run leveraged strategies, where the loan is one leg of a bigger trade in derivatives in crypto. The more levered the structure, the less room it has to absorb a parameter change it never saw coming.
How to Use the Collateral Factor Without Getting Liquidated
The core rule fits in one sentence. Borrow at 40-60% of your collateral value, even when the collateral factor allows 75-80%. If the collateral factor on ETH is 75%, aim to borrow no more than $450-500 against a $1,000 deposit. That leaves a 25-30 percentage-point cushion between you and the ceiling, and even more between you and the liquidation threshold.
Then there is the MAX button. Every lending UI has one, and it is the single most reliable way to get liquidated. Clicking MAX puts your debt directly at the collateral factor, which means a 5-10% dip in your collateral’s price can push you across the liquidation threshold. A recurring story in DeFi communities goes exactly this way — deposit ETH, click MAX, watch a routine pullback take the whole position, plus a liquidation bonus paid to whoever closed it.
Staying safe after you borrow comes down to a short routine, not constant anxiety. Work through this checklist before and after every borrow:
- Keep your health factor above 1.5 on Aave. Anything under 1.3 is your signal to act.
- Check your collateral’s price daily if it is volatile — weekly is enough for stablecoin collateral.
- Set health-factor alerts on a portfolio tracker like DeBank or Instadapp so a fast market cannot sneak up on you.
- Know your two rescue moves in advance: add more collateral, or repay part of the loan.
Both rescue moves do the same job from opposite ends. Adding collateral raises the value side of the equation, and repaying debt lowers the loan side. Either one pushes your position away from the liquidation threshold and widens your collateral margin — the practical gap between where your position sits now and where liquidation begins.
One last note for traders. The same discipline applies when posting margin for perpetual futures, where maintenance margin plays the liquidation-threshold role. Different venue, same physics: the closer you run to the ceiling, the smaller the price move that ends you.
FAQ
What does a collateral factor of 75% mean?
A 75% collateral factor means the protocol will let you borrow up to 75% of your deposited collateral’s current market value. If you deposit $1,000 worth of ETH, your maximum borrow amount is $750 across any supported assets. That 25% gap acts as a buffer — if ETH drops in value, the protocol needs room to liquidate your position before the loan turns into bad debt.
How is the collateral factor different from the liquidation threshold?
The collateral factor sets your borrowing ceiling — how much you can take out. The liquidation threshold is a higher percentage at which the protocol will forcibly sell your collateral to cover the debt. On Aave, ETH might have an 80% LTV but an 83% liquidation threshold. The 3-point gap is your safety margin between “you cannot borrow more” and “you are being liquidated.”
Does Aave use the term collateral factor?
Aave uses “LTV” (loan-to-value) for the same concept. Compound calls it “collateral factor,” and Venus Protocol uses “collateral factor” as well. These are different labels for the same parameter — the maximum percentage of collateral value you can borrow against. Aave’s UI also shows a health factor, calculated from the liquidation threshold rather than the LTV.
Can the collateral factor on my deposited asset change after I deposit?
Yes. Protocol governance can vote to lower the collateral factor for any asset at any time. In Compound v3, the borrow collateral factor and the liquidation collateral factor are separate, so a governance cut to the borrow side does not immediately liquidate existing positions — but it narrows your safety margin. If you hold a large borrowing position, check the protocol’s governance forum periodically.
What is a safe amount to borrow relative to the collateral factor?
A practical rule is to borrow no more than 50-60% of your collateral value even if the collateral factor is 75-80%. This leaves a meaningful buffer against price swings. On a volatile asset like ETH or WBTC, a tighter approach — borrowing at 40-50% of collateral value — is safer. Only stablecoin collateral positions can run closer to the maximum, because their price barely moves.
Where To Start
Reading about the collateral factor is cheap. Testing it with small money is how the concept sticks. So here is a low-risk path you can start this week:
- Open Aave or Compound and find the collateral factor (or LTV) and liquidation threshold for ETH and USDC. Reading the real parameters teaches more than any glossary.
- Deposit a small amount you can afford to experiment with. Note your borrowing ceiling before you touch the borrow button.
- Borrow well under half your ceiling. Then watch how your health factor moves as prices change over a week.
- Set a health-factor alert on DeBank or a similar tracker before you scale up any position.
- Bookmark the governance forum of whichever protocol you use. Skim it whenever a proposal mentions an asset you have deposited.
Notice what each step trains. You learn to read the real number, size a position under it, and watch the buffer move in real time. That is the whole skill. The collateral factor sets your ceiling, the liquidation threshold sets your danger line, and the space between them is yours to protect. Borrow inside that space, keep a little cash ready to top up, and a rough day in the market stays a rough day, not a wipeout.
