Direct Answer
Liquidation is the exchange force-closing a leveraged position when the equity backing it falls to the maintenance margin requirement, the minimum collateral the venue requires to keep the position open. It's an exit determined by the exchange, not by your trade plan, and it can trigger before your own stop-loss is reached.
Key Takeaways
- Liquidation triggers at the maintenance margin requirement, not when the full initial margin is consumed, the position closes sooner than a simplified estimate suggests.
- Liquidation price ≈ Entry price × (1 − 1/Leverage + MMR) for a long position; adding the maintenance margin rate always moves the liquidation price closer to entry than a simplified formula implies.
- Distance to liquidation is roughly 1/leverage minus the maintenance margin rate, so the buffer collapses fast at high leverage, at 100x with a 0.5% MMR, the usable buffer is halved to about 0.5%.
- Exchanges use mark price, typically derived from an index of several spot venues, to calculate liquidations, not the last traded price on that one exchange's order book, which can diverge from it in either direction.
- Exchanges commonly apply tiered maintenance margin where larger positions face higher rates, so scaling up size can shrink the liquidation buffer even at constant leverage.
What Is Liquidation in Crypto Trading?
Liquidation is the exchange force-closing a leveraged position when the equity backing it falls to the maintenance margin requirement, the minimum collateral the venue requires to keep the position open. It's an exit determined by the exchange, not by your trade plan, and it can trigger before your own stop-loss is reached. That makes it a second, independent risk that a plain position-size calculation doesn't capture.
Initial Margin vs. Maintenance Margin
Initial margin is the collateral required to open a position. At 10x leverage, a $10,000 notional position requires roughly $1,000 of initial margin, that's what "leverage" is describing.
Maintenance margin is the smaller amount required to keep it open. Once losses erode equity down to this level, the position is liquidated. Maintenance margin is usually expressed as a rate applied to notional value, a maintenance margin rate (MMR) of 0.5% on a $10,000 position means $50 must remain.
This is the gap most simplified formulas ignore. A position isn't liquidated when losses consume the full margin posted; it's liquidated once equity falls to the maintenance requirement, which happens sooner. Maintenance margin rates vary by venue, by market, and by position size, look up the rate and tier thresholds for your specific exchange and pair in its margin or risk-limit documentation before relying on any calculated figure.
The Liquidation Price Formula, With Maintenance Margin
For an isolated-margin long position:
Liquidation price ≈ Entry price × (1 − 1/Leverage + MMR)
For an isolated-margin short position:
Liquidation price ≈ Entry price × (1 + 1/Leverage − MMR)
Compare that to the simplified version, which drops the MMR term entirely (entry × (1 − 1/leverage) for a long). Adding maintenance margin always moves the liquidation price toward entry, earlier for a long, earlier for a short, which is why a simplified estimate is optimistic rather than conservative.
Hypothetical example, for education only.
A long entered at $100 with 10x leverage and a 0.5% maintenance margin rate:
- Simplified estimate: $100 × (1 − 0.10) = $90.00
- With maintenance margin: $100 × (1 − 0.10 + 0.005) = $90.50
Fifty cents doesn't sound like much until you notice it consumes 5% of the entire buffer between entry and liquidation. Accrued trading fees and funding payments reduce equity further, moving the real figure closer to entry still, so even $90.50 is a floor, not a promise.
How Leverage Shrinks the Buffer
Distance to liquidation, as a percentage of entry price, is roughly 1/leverage − MMR. Both terms matter, and the second one becomes proportionally brutal at high leverage.
| Leverage | Simplified distance | Distance with 0.5% MMR | Buffer lost to MMR |
|---|---|---|---|
| 2x | 50% | 49.5% | 1% |
| 5x | 20% | 19.5% | 2.5% |
| 10x | 10% | 9.5% | 5% |
| 20x | 5% | 4.5% | 10% |
| 50x | 2% | 1.5% | 25% |
| 100x | 1% | 0.5% | 50% |
Hypothetical example using a flat 0.5% MMR, real rates vary by exchange, pair, and position size.
At 100x, a 0.5% maintenance margin rate halves the usable buffer: the position tolerates a 0.5% adverse move rather than 1%. Exchanges also commonly apply tiered maintenance margin, where larger positions face higher rates, so scaling up size can shrink the buffer even at constant leverage.
Why Liquidation Uses Mark Price, Not Last Traded Price
Mark price is a reference price, typically derived from an index of several spot venues, sometimes with a funding-basis adjustment, that exchanges use to calculate unrealized profit and loss and to trigger liquidations. Last traded price is just the most recent fill on that one exchange's order book.
The distinction protects traders in one direction and surprises them in another. A brief wick on a single venue's order book can print a last price well below your liquidation level without liquidating you, because mark price, anchored to a broader index, didn't move as far. Equally, mark price can drift against you while the last price on your screen looks fine.
Checking a position's liquidation level against the mark price the exchange publishes, not the last trade, is the only comparison that reflects how the liquidation engine actually decides.
Isolated vs. Cross Margin
| Criterion | Isolated margin | Cross margin |
|---|---|---|
| Collateral used | Only the margin assigned to that position | The whole account balance |
| Liquidation distance | Closer to entry | Further from entry |
| Maximum loss if liquidated | Generally capped at the assigned margin | Can draw on the wider account balance |
| Effect of a second position | Independent | Shares collateral; one position's losses can pull another toward liquidation |
| Main tradeoff | Liquidates sooner, but the damage is contained | Survives larger moves, but risks more capital when it doesn't |
Neither mode is simply safer. Cross margin's further-away liquidation price is often read as lower risk, when it actually means a larger share of the account is standing behind the trade. Isolated margin liquidates earlier by design, that early exit is the feature, not the flaw.
Funding Rates: The Cost That Accrues While You Wait
Perpetual futures have no expiry, so exchanges use a funding rate, a periodic payment between long and short holders, to keep the contract price tethered to spot. When funding is positive, longs pay shorts; when negative, shorts pay longs. The payment interval and rate vary by exchange and market.
Funding matters for liquidation risk because payments come out of the same equity that maintenance margin is measured against. A position held through many funding periods can drift toward liquidation on funding cost alone, with no adverse price move at all. On a multi-day leveraged hold, funding can quietly become a larger cost than the trading fees.
The crypto position-size calculator deliberately excludes funding, since the rate changes continuously, which is exactly why a long-held leveraged position needs its funding cost checked separately against the live rate on the venue.
What Happens During a Liquidation
Once mark price reaches the liquidation level, the exchange's liquidation engine takes over the position and closes it into the order book. Several mechanisms can come into play:
- Partial liquidation, some venues close only part of a position, reducing risk enough to satisfy maintenance margin rather than closing everything.
- Liquidation fee, a charge applied on top of the loss, further reducing what's returned.
- Insurance fund, a pooled reserve that absorbs shortfalls when a liquidated position can't be closed at a price covering its losses.
- Auto-deleveraging (ADL), when the insurance fund can't cover a shortfall, some venues force-close profitable positions on the opposite side, which can close a winning trade without warning.
These mechanics differ substantially between exchanges. The practical consequence is that a liquidation rarely returns exactly the residual margin a formula predicts, and in stressed markets the outcome can be worse than the arithmetic suggests.
When Liquidation Sits Inside Your Stop
Hypothetical example, for education only.
A trader enters long at $100 and places a stop at $94, based on a support level. Depending on leverage, the exchange may exit the position first:
| Leverage | Est. liquidation (0.5% MMR) | Which exit triggers first? |
|---|---|---|
| 5x | $80.50 | The $94 stop, liquidation is far beyond it |
| 10x | $90.50 | The $94 stop, with roughly $3.50 of headroom |
| 20x | $95.50 | Liquidation, the exchange closes the trade before the stop |
At 20x, the trade thesis never gets tested. The stop was placed at a level the position can't survive long enough to reach, so the real risk isn't the planned 6% move, it's an exchange-determined exit 4.5% away, plus a liquidation fee. Either leverage comes down or the stop moves in; leaving both as they are means the plan is fiction. The leveraged mode of the crypto position-size calculator flags this case directly.
Controls That Actually Reduce Liquidation Risk
- Use less leverage. Nothing else on this list moves the liquidation price as much.
- Calculate the liquidation price before entering, using the exchange's own figure, and compare it to your stop.
- Keep unused margin available rather than committing the full balance to open positions.
- Prefer isolated margin when the goal is capping the loss on one idea rather than maximizing survival distance.
- Set the stop meaningfully inside the liquidation level, so the trade exits on your terms first.
- Check the funding rate before a multi-day hold, and re-check it while the position is open.
- Reduce size during high volatility, the same leverage is far more dangerous when hourly ranges widen.
- Cap total leveraged exposure across positions, not just per trade, especially under cross margin where they share collateral.
Common Mistakes
- Trusting a simplified liquidation estimate as the real level, maintenance margin, fees, and funding all move it closer to entry.
- Comparing the liquidation price to last traded price instead of mark price.
- Reading cross margin's distant liquidation price as lower risk, when it means more of the account is exposed.
- Adding margin to a losing position to push liquidation away, which increases the capital at risk rather than fixing the thesis.
- Ignoring funding on a long hold, then being liquidated with no adverse price move to explain it.
- Assuming a stop protects a leveraged position without checking whether liquidation sits closer to entry.
- Overlooking tiered maintenance margin, where a larger position faces a higher rate and a smaller buffer.
Limitations
Every formula on this page is an approximation. Real liquidation prices depend on each exchange's maintenance margin tiers, mark-price methodology, fee schedule, funding mechanics, partial-liquidation rules, insurance-fund behavior, and auto-deleveraging policy, none of which are standardized across venues, and several of which can change. The only authoritative liquidation price for a position is the one the exchange displays for that position, and even that shifts as funding accrues and margin changes. Leveraged trading can lose the full margin posted, and under cross margin can consume more of the account than the position itself represented.
Knowing the Move That Ends the Position Before You Open It
The number to calculate first is the percentage move that closes the position, and it is smaller than most people expect. Leverage multiplies exposure, so it divides the distance to liquidation. Writing that percentage next to the asset's ordinary daily range makes the risk concrete in a way that a leverage multiple does not.
Compare that distance against normal volatility rather than against your expectation of the move. A position that liquidates on a move the asset produces routinely is not a leveraged bet on direction; it is a bet that ordinary noise will not occur while you hold it.
The mistake that turns a manageable loss into a total one is adding margin to a losing position. Doing so widens the liquidation distance and increases the amount at risk simultaneously, which converts a defined loss into a larger undefined one. The instinct to defend the position is precisely what the mechanism punishes.
Liquidation itself is also not a floor. In a fast move the closing order can fill well beyond the liquidation price, and on venues without adequate insurance funds the shortfall can be socialised across profitable traders. The worst case is not losing the margin posted; on some venues and in some conditions it has been more.
Leverage and Liquidation FAQs
What is liquidation in crypto trading?
Liquidation is the exchange force-closing a leveraged position when the account equity backing it falls to the maintenance margin requirement. It's an exchange-determined exit that can happen before a trader's own stop-loss is reached.
Why does liquidation happen before my calculated liquidation price?
Simplified formulas assume liquidation occurs when losses equal the full margin posted. Real exchanges liquidate earlier, once equity falls to the maintenance margin requirement, and accrued fees and funding payments reduce equity further, moving the real liquidation price closer to entry.
What is the difference between mark price and last traded price?
Mark price is a reference price, typically derived from an index of several spot venues, that exchanges use to calculate unrealized profit and loss and trigger liquidations. Last traded price is simply the most recent fill on that one exchange, and it can spike away from mark price without triggering liquidation.
Is isolated or cross margin safer?
Isolated margin caps the loss on a position at the margin assigned to it, so a liquidation can't consume the rest of the account. Cross margin uses the whole account balance as collateral, which pushes the liquidation price further away but puts more capital at risk if it's reached.
Does higher leverage increase the risk of liquidation?
Yes. Higher leverage shrinks the price distance between entry and liquidation. The maintenance margin requirement also consumes a proportionally larger share of that shrinking buffer, so the usable room at very high leverage is smaller than a simple 1/leverage estimate suggests.
Can I lose more than my margin on a leveraged crypto position?
On an isolated-margin position, losses are generally capped at the assigned margin, though extreme gaps can exceed it. With cross margin, a liquidation can draw on the wider account balance. Some venues also operate insurance funds or auto-deleveraging that affect what happens when a liquidation can't be filled at the expected price.
What is auto-deleveraging and when does it affect a profitable position?
When a liquidated position closes at a worse price than its bankruptcy level and the insurance fund cannot absorb the shortfall, some venues reduce positions held by traders on the profitable side to balance the book. A correct, profitable, well-margined position can therefore be closed without any action by its holder. Venues generally publish an indicator showing how near the front of the deleveraging queue an account sits.
Does adding margin to a losing position lower the liquidation price?
It does, because the liquidation level is determined by how much collateral supports the position, and adding collateral moves that level further away. The reason this is dangerous rather than simply helpful is that it increases the amount at risk on a position already moving against you, converting a bounded loss into a larger one. The mechanism works while the decision to use it is the one that most often turns a manageable loss into a severe one.
How does a mark price index protect against manipulation, and when does that protection fail?
Because the mark price is derived from several external spot venues rather than from the derivatives book itself, a single venue's price cannot by itself trigger liquidations. The protection weakens when the constituent venues share the same underlying liquidity, when one constituent is itself thin, or when a genuine market-wide dislocation moves every input at once. The index reduces manipulation risk without eliminating it.