How Liquidation Price Is Calculated in Crypto Futures

What Liquidation Price Actually Means

When you open a leveraged futures position, you're only putting up a fraction of the position's full value. The rest is exposure made possible through leverage. That works fine as long as the market moves in your favor, or even sideways. But if it moves against you enough, your margin, the money you actually put up, starts running out.

Liquidation price is the point where that margin can no longer cover your open losses. Instead of letting your losses grow past what you've deposited, the exchange forces the trade closed. It isn't a penalty and it isn't personal. It's a built-in safety mechanism that protects both you and the exchange from you owing more than you put in.

Why Exchanges Liquidate Positions Automatically

Futures exchanges lend you buying power through leverage, and that only works if losses stay contained within the margin you've posted. Without a liquidation mechanism, a large enough adverse move could leave your account with a negative balance, meaning you'd owe the exchange money beyond what you deposited.

By automatically closing your position once your margin drops to a set threshold, the exchange caps your maximum loss at roughly your margin balance instead of letting it grow indefinitely. This is also why exchanges maintain insurance funds and check liquidation against a smoothed "mark price" rather than the last trade, both of which we'll get to shortly.

Liquidation vs. a Stop-Loss: What's the Difference

A stop-loss is a voluntary order you set yourself, at a price of your choosing, to close a trade before it gets too painful. Liquidation is involuntary. It's set by the exchange's rules, not your preference, and it happens automatically once your margin runs out.

In practice, a well-placed stop-loss should trigger before your liquidation price is ever reached, closing the position on your terms with some margin still intact. If your stop-loss and your liquidation price sit close together, you're leaving very little room for the market's normal volatility before you're forced out at the worst possible level, often with a liquidation fee on top.

Key Terms to Understand Before You Calculate Anything

The liquidation price formula uses a handful of terms that are worth nailing down first. Once these click, the math itself is genuinely simple.

Margin and Leverage

Margin is the money you actually deposit to open a position. Leverage is the multiplier applied to that margin to determine your total position size. If you deposit $500 in margin and use 10x leverage, you're controlling a $5,000 position, ten times what you put up yourself.

Higher leverage means you need less of your own capital to open a given position size, but it also means a smaller price move wipes out your margin. Leverage doesn't necessarily change how much money you can lose in dollar terms; what it changes is how small a percentage move is needed to lose it. If you want to see how margin and leverage interact in a related market, our guide on how margin and leverage work together in forex walks through the same relationship outside of crypto.

Initial Margin vs. Maintenance Margin

Initial margin is the amount you need to open a position in the first place, and it's directly tied to your leverage: Initial Margin Rate = 1 ÷ Leverage. Maintenance margin is different. It's the minimum equity you need to keep the position open once it's already running.

Maintenance margin is almost always smaller than initial margin, and it's usually set as a percentage of the position's notional value, often tiered so that larger positions require a higher maintenance margin rate. This gap between the two is exactly why your liquidation price isn't simply "100% divided by leverage." The maintenance margin rate closes part of that gap, which is why it shows up in the formula later in this guide.

Mark Price vs. Last Traded Price

Most exchanges don't use the last traded price to decide when to liquidate you. Instead, they use a "mark price," typically a smoothed value built from an index of prices across several markets. This makes it much harder for one large order, or a brief wick on a single exchange, to trigger a liquidation that wouldn't have happened based on the broader market. When you're checking how much room you have before liquidation, compare against the mark price your exchange is showing, not just the last trade scrolling by on the chart.

The Core Liquidation Price Formula

For an isolated-margin position, ignoring trading fees and funding payments for now, the standard formula looks like this:

Long Position Formula

Since a long position loses money as price falls, the formula subtracts most of your leverage-based cushion from the entry price, then adds back a small buffer for the maintenance margin rate. The bigger your leverage, the more of that cushion gets subtracted, and the closer your liquidation price sits to your entry.

Short Position Formula

Short positions lose money as price rises, so the formula flips: instead of subtracting, it adds the leverage-based buffer above your entry price, then subtracts a small amount for the maintenance margin rate. The higher your leverage, the closer this price sits above your entry.

Step-by-Step: Calculating a Long Position's Liquidation Price

Let's work through a real example using round numbers. Say you're opening a long position on BTC/USDT perpetual futures.

Your starting numbers:

• Entry price: $60,000
• Leverage: 10x
• Margin you deposit: $500
• Maintenance margin rate: 0.5% (a commonly used illustrative rate; your exchange's actual rate may differ)

1. Calculate position size. Margin × Leverage = $500 × 10 = $5,000. That's the total value of BTC you control.
2. Calculate how much BTC that buys. $5,000 ÷ $60,000 = 0.08333 BTC.
3. Calculate your initial margin rate. 1 ÷ Leverage = 1 ÷ 10 = 0.10, or 10%.
4. Plug into the formula. Liquidation Price = $60,000 × (1 − 0.10 + 0.005) = $60,000 × 0.905 = $54,300.
5. Check the distance. $60,000 − $54,300 = $5,700, which is a 9.5% drop from your entry price.

So if BTC falls to $54,300, your position gets liquidated. You can sanity-check this: your loss at that price would be 0.08333 BTC × $5,700 ≈ $475, leaving $25 of your original $500 margin, which matches 0.5% of your $5,000 position, exactly the maintenance margin your exchange requires you to keep.

Step-by-Step: Calculating a Short Position's Liquidation Price

The short version uses the same inputs, just with the formula flipped. Using the identical numbers, a $60,000 entry, 10x leverage, $500 margin, and a 0.5% maintenance margin rate:

Liquidation Price = $60,000 × (1 + 0.10 − 0.005) = $60,000 × 1.095 = $65,700.

If BTC rises to $65,700, a 9.5% move in the opposite direction, your short position gets liquidated. The same sanity check applies: your loss at that price is 0.08333 BTC × $5,700 ≈ $475, again leaving exactly $25, or 0.5% of your $5,000 position, as your remaining margin.

Notice that both liquidation prices sit the same percentage distance from your entry, just in opposite directions. That symmetry only holds when you compare a long and a short opened with identical leverage and margin. In practice, most traders aren't running mirror-image trades, so don't expect your own positions to line up this neatly.

Isolated Margin vs. Cross Margin

Every liquidation price calculation depends on which margin mode you're using, and the two modes protect you differently.

Isolated margin locks a specific amount of margin to one position. If that position gets liquidated, you lose the margin assigned to it, and only that. Your other positions and your remaining wallet balance stay untouched. This makes isolated margin easier to reason about, since the liquidation price depends only on that one position's own numbers, exactly like the examples above.

Cross margin pools your entire available futures balance as backup collateral for every open position. If one trade starts losing, funds from your broader balance can be pulled in to keep it open longer, which pushes the liquidation price further from your entry price. The tradeoff is that a bad move on one position can now draw down money you might have wanted for other trades.

Neither mode is universally better. Isolated margin gives you a hard cap on what one trade can cost you, while cross margin gives a position more breathing room using capital you're not actively using elsewhere. Many traders use isolated margin while testing a new setup, then move to cross margin only for positions they've already sized carefully.

What Actually Happens When You Get Liquidated

Liquidation isn't a single dramatic event so much as a mechanical process the exchange runs the moment your position crosses its threshold.

The Liquidation Engine and the Order Book

Once your position hits its liquidation price, the exchange's liquidation engine closes it with a market order in the opposite direction: a sell order for a long position, a buy order for a short one. Because this is a forced market order rather than a limit order at a price you'd have chosen, it can execute at a slightly worse price than your calculated liquidation level, especially during fast-moving markets.

This matters at a market-wide level too. When leverage is high across many traders at similar price levels, a string of liquidations firing in sequence can push price further in the same direction, triggering the next batch of liquidations behind them. This cascading effect is part of why crypto markets can move so sharply during high-leverage sell-offs.

Liquidation Fees and the Insurance Fund

Most exchanges charge a liquidation fee, deducted from whatever margin remains at the moment of closure. On top of that, many platforms maintain an insurance fund: a pool of assets built up from those very fees. It covers the gap when a position gets closed at a worse price than its calculated liquidation level during fast markets, so one trader's bad liquidation doesn't spill over as an unexpected loss to other traders on the platform.

Margin Call vs. Liquidation

Some trading platforms issue a margin call before liquidation: a warning that your margin is running low, giving you a chance to add funds or reduce your position. Many crypto exchanges skip this step entirely and move straight to liquidation once your maintenance margin threshold is crossed, so don't assume you'll get advance notice. If you want to see how a margin call plays out on a platform that does use one, our article on what happens when you get a margin call in forex covers the concept in more detail.

Factors That Move Your Liquidation Price Closer to Your Entry

Your liquidation price isn't fixed the moment you open a trade. Several things can shift it, usually in a direction you don't want.

Leverage Level

This is the biggest factor by far. The table below shows roughly how much room you have before liquidation at different leverage levels, using the same 0.5% maintenance margin rate as the earlier example, and ignoring fees for simplicity.

*Assumes isolated margin, no fees, and a flat 0.5% maintenance margin rate for illustration. Your exchange's actual maintenance margin rate may be higher or lower depending on the asset and your position size tier.

Notice how quickly that buffer shrinks. Moving from 10x to 50x leverage doesn't just make things somewhat riskier. It cuts your safety margin down to roughly a sixth of what it was.

Funding Fees Slowly Eating Into Your Margin

Perpetual futures contracts use periodic funding payments, exchanged directly between long and short traders, to keep the contract's price tethered to the underlying spot market. If you're on the side paying funding, each payment is deducted from your margin. On a position held for weeks, this can nudge your liquidation price measurably closer to the market, even if the asset's price hasn't moved much at all. Our guide on what a funding rate is in crypto futures trading breaks down how these payments are calculated, and 100 Calculator's Crypto Futures Funding Fee Calculator can help you estimate the running cost on a position you're planning to hold.

Mark Price Movement and Volatility

Since liquidation is checked against mark price, sudden volatility in the underlying index, even briefly, can bring your liquidation price into range faster than the last traded price alone might suggest. This is especially relevant around major news events or during periods when an asset's typical daily range is unusually wide.

How to Protect Your Position From Liquidation

None of this math matters much if you don't use it to make safer decisions before you open a trade. A few habits go a long way:

• Use less leverage than the maximum your exchange allows, not the maximum itself
• Size your position around your account balance, not around your maximum available margin
• Set your own stop-loss well above (or below) your liquidation price, not right next to it
• Watch mark price, not just the last traded price, when judging how close you are to danger
• Add margin proactively on isolated positions if a trade moves against you and you still believe in it
• Avoid stacking several correlated positions that could drain a shared cross-margin balance all at once

Position size matters just as much as leverage here. Even at moderate leverage, an oversized position relative to your account balance leaves you a thinner margin than the earlier math assumes. 100 Calculator's Crypto Position Size Calculator can help you work backward from how much you're willing to risk to a position size that fits it. Our guides on how to calculate position size for safer trading and how to avoid liquidation when trading with leverage both go deeper into the sizing side of this.

If you're weighing how much leverage feels appropriate for your own risk tolerance, 100 Calculator's Risk Reward Ratio Calculator is worth running before you enter a trade. It shows whether the potential reward actually justifies how close you're setting your liquidation price.

Common Liquidation Calculation Mistakes to Avoid

Even traders who understand the formula in theory tend to trip over the same handful of mistakes in practice.

• Confusing liquidation price with entry or breakeven price. These are three different numbers, and mixing them up leads to a false sense of how much room you actually have.
• Assuming the distance to liquidation is exactly 100% divided by leverage. That ignores the maintenance margin rate, which always shifts the real number slightly.
• Judging safety off the last traded price instead of the mark price. These can differ, sometimes by more than you'd expect during volatile periods.
• Forgetting that funding payments chip away at margin over time. This matters most on positions held for weeks rather than hours.
• Not knowing whether you're on isolated or cross margin. The formula and the risk to your other funds are genuinely different between the two.
• Treating liquidation price as fixed. It moves as your margin, funding payments, and other open positions change, so it's worth rechecking periodically rather than calculating it once and forgetting about it.

Any one of these on its own usually isn't catastrophic. But they tend to stack. Someone using cross margin without realizing it, judging distance off the last price instead of mark price, and ignoring weeks of funding payments, all at once, often ends up liquidated well before they expected to be. If a liquidation catches you off guard and wipes out more of your account than planned, 100 Calculator's Drawdown Recovery Calculator is worth a look. It shows how much of a return you'd need to get back to even, which is usually a bigger number than people expect. Our article on why large drawdowns are so hard to recover from explains that math in more depth.

Liquidation Price Can Vary by Exchange

Everything in this guide describes the general logic nearly every exchange follows, but the exact numbers aren't identical everywhere. Maintenance margin rates are typically tiered by position size, meaning a larger position on the same asset can carry a higher rate than a smaller one. Fee structures, whether funding is folded into the live calculation, and even how mark price is derived can all differ from platform to platform.

Treat the formulas in this guide as a way to understand the mechanics and sanity-check what your exchange shows you, not as a substitute for the exact number your platform calculates in real time. Before trading with real funds, it's worth reading through your specific exchange's own documentation on margin and liquidation.

Using a Liquidation Price Calculator Instead of Doing It by Hand

Once you understand how the formula works, there's rarely a reason to keep recalculating it by hand every time you consider a trade.

Understanding the math in this guide is what lets you double-check that number and know exactly why it landed where it did, instead of treating it as a black box. That combination, a tool for speed and an understanding of the mechanics for confidence, is generally the safest way to approach leveraged trading.

More From Our Crypto Calculator Guide

Still building your understanding of leverage, margin, and crypto futures math? These related guides dig deeper into the topics covered above.

Frequently Asked Questions