Liquidation: How It Works and How to Avoid It
Liquidation isn't random: it's a price you can know before you enter, and push far away on purpose.
You can know this number before you enter. Raise the leverage and watch the liquidation price march toward your entry. Less room to be wrong, same trade.
Play with the tool above first. Raise your leverage and watch the liquidation price crawl toward your entry. That gap is your whole story in this module: the bigger the leverage, the smaller the move it takes to wipe you out. Everything below just explains what you're seeing.
Liquidation is not bad luck
Liquidation means the exchange force-closes your position because your margin (the cash you put up to hold the trade) can no longer cover the loss. Your position is losing, the loss eats into your margin, and the moment your margin drops below the minimum the exchange requires, they close you automatically. You don't get asked. You don't get to wait for a bounce.
Here's the part most beginners get wrong: it is not random. There is one specific price where it happens, and you can know that price before you click buy. A liquidation should never surprise you. If it did, it's only because you didn't look.
Your liquidation price exists before you enter
The instant you open a leveraged position, the exchange calculates a single number: your liquidation price. That's the price at which your losses have burned through your margin.
Think of it as the edge of a cliff. Your entry is where you're standing. Your liquidation price is where the ground ends. Leverage decides how far away that edge is.
- 10x long: roughly a 10% move against you reaches the cliff.
- 50x long: roughly a 2% move does it.
- 100x long: roughly a 1% move (one twitchy candle) and you're gone.
Crypto routinely moves 1-2% in minutes. At 100x, a completely normal wiggle is a fatal one. That's not a scam; that's just the math of the leverage you chose.
Two ways to push the cliff further away
You only have two real levers, and both do the same thing (buy yourself more room before liquidation):
1. Use less leverage. Lower leverage = wider gap between entry and liquidation. Going from 100x to 20x turns a 1% death zone into roughly a 5% one. Same trade idea, five times more breathing room. This is the single highest-value habit in this whole course.
2. Add margin. More margin behind the same position means more loss it can absorb before hitting the minimum. Topping up collateral drags the liquidation price further from your entry.
Notice what's missing: "hope it comes back" is not a lever. Once price touches your liquidation level, it's already over.
A liquidation costs more than a stop-loss
New traders sometimes treat liquidation as a free stop-loss: "the exchange will just close me, same thing." It is not the same thing, and it's more expensive.
A planned stop-loss is an order you set to exit at a price you choose, on your terms. A liquidation is a forced fire-sale run by the exchange's engine, and it comes with extra costs stacked on top:
- Liquidation fees: a penalty charge most exchanges add on top of normal trading fees.
- Slippage: the engine dumps your position into whatever price is available, often during fast, thin markets, so you get filled worse than the liquidation price you saw.
The result: a stop-loss lets you walk away with some margin left. A liquidation usually takes more of it, sometimes all of it. Set your own stop, closer than your liquidation price, every single time. Then the exchange's engine never gets to touch you.
The one habit to keep
Before you enter: look at the liquidation price. Ask "can the market realistically move that far in the time I'm holding?" If a normal hour of trading could hit it, your leverage is too high. Lower it, or add margin, or set a stop with room to spare. Do this and liquidation stops being a scary surprise. It becomes a line you simply never let price reach.
The liquidation price formula (long & short)
A simplified version, ignoring fees, for isolated margin on a linear (USDT) perp. Let:
E= entry priceL= leverageMMR= maintenance margin rate (the exchange's minimum, e.g. 0.5% = 0.005)
Long liquidation price:
Liq = E × (1 − 1/L + MMR)
Short liquidation price:
Liq = E × (1 + 1/L − MMR)
Worked example (long, entry 100, 100x, MMR 0.5%):
Liq = 100 × (1 − 0.01 + 0.005) = 100 × 0.995 = 99.5
A 0.5% drop and you're liquidated. At 10x, the same formula gives 100 × (1 − 0.1 + 0.005) = 90.5, a 9.5% cushion. The 1/L term is the whole game: leverage sits in the denominator, so doubling leverage roughly halves your distance to liquidation.
| Leverage | ~Distance to liquidation (long) |
|---|---|
| 5x | ~20% |
| 10x | ~10% |
| 25x | ~4% |
| 50x | ~2% |
| 100x | ~1% |
(Maintenance margin nudges these slightly closer; real exchanges also use tiered MMR that rises for bigger positions.)
Partial liquidation, insurance funds, and ADL
Liquidation isn't always all-or-nothing:
- Partial liquidation: for larger positions, some exchanges close only part of your position, enough to bring your margin back above the minimum. You survive with a smaller position instead of losing everything at once.
- Insurance fund: a pooled reserve that covers the gap when a position is liquidated below bankruptcy price (i.e., the fill was so bad it went negative). It absorbs the shortfall so winning traders still get paid in full.
- Auto-deleveraging (ADL): the last resort. In extreme moves, if the insurance fund can't cover the losses, the exchange force-closes profitable traders on the opposite side to balance the books. It's rare, but it means even a winning position can be closed against your will during chaos. Nothing you did wrong, just the system protecting itself.
Isolated vs cross margin at the moment of liquidation
The margin mode decides how much is at stake when things go wrong:
- Isolated margin: only the margin assigned to that one position is on the line. Liquidation loses that slice and nothing else. Your account's other funds are walled off. Predictable, contained, beginner-friendly.
- Cross margin: your entire account balance backs the position. That pushes your liquidation price much further away (more collateral behind the trade), which sounds great, but if it does liquidate, it can take your whole balance with it, not just one position's margin.
Rule of thumb: isolated to cap your downside per trade while you're learning; cross only when you understand that you're putting the whole account behind the position.
Quick knowledge check
Is your liquidation price knowable before you enter the trade? Yes, the exchange sets one specific price the moment you open, based on your entry, leverage, and maintenance margin. Always look at it first.
Name the two ways to move your liquidation price further from your entry. Use less leverage, or add more margin. Both give the position more room to move before it's force-closed.
Why is a liquidation usually more expensive than a planned stop-loss? Liquidation adds a penalty fee and forced-fill slippage on top, so it typically takes more of your margin than an exit you chose yourself.
Sources
- SEC (investor.gov): "Understanding Margin Accounts" (forced liquidation when equity falls below the maintenance-margin requirement)
- CME Group Education: "Margin: Know What's Needed" (maintenance margin and the automatic liquidation triggered when the account drops below it)
- Chitra, "Autodeleveraging: Impossibilities and Optimization" (arXiv:2512.01112) (insurance funds and auto-deleveraging as last-resort loss socialization in perpetual markets)
- FINRA: "Margin Regulation" (which funds back a position and the firm's forced sale to cover a margin shortfall)