Leverage is a position-size decision wearing a costume
Leverage is usually introduced as a multiplier on outcomes: “10x” sounds like ten times the result. That framing is where most of the damage starts. Leverage does not change how good an idea is. It changes how big the position is compared with the money you put up, and that is a sizing decision, the same one you would be making without it.
What the number actually means
With 10x leverage, 100 of your own money (the margin) controls a position worth 1,000. The exchange lends the rest. Two things follow immediately:
- A 1% move in the price is a 1% move on 1,000, which is 10. Against your 100 of margin, that is 10%.
- If the position loses roughly the value of your margin, there is nothing left to absorb further loss, so the exchange closes it. That forced closure is called liquidation.
So the multiplier is really a statement about distance: how far the price can move against you before the position is taken away.
How close the edge gets
Ignoring fees and the exchange’s maintenance buffer, which bring the edge slightly closer still, the rough distance to liquidation looks like this:
| Leverage | Adverse move that wipes out the margin |
|---|---|
| 2x | about 50% |
| 5x | about 20% |
| 10x | about 10% |
| 20x | about 5% |
| 50x | about 2% |
| 100x | about 1% |
Now compare that with how much a volatile asset moves on an ordinary day. A few percent in either direction is unremarkable in crypto. At 50x, an unremarkable day is enough. The idea behind the position can be entirely right about the week and still be closed out by the afternoon.
The costume
Here is the part the multiplier hides. Suppose you decide, sensibly, that you are willing to lose no more than 1% of your account on one position.
That single decision fixes the position size once you know where your stop is. If the stop is 2% away from entry, a position worth half your account loses 1% of the account when the stop is hit. Whether you reach that position size with 2x leverage and more margin, or 10x leverage and less margin, the loss at the stop is identical.
Leverage did not change the risk. The position size and the stop did. Leverage only decided how much of your balance had to be locked up to hold it.
Seen this way, the useful question is never “what leverage should I use?” It is “how large is this position, where is the stop, and what does that cost me if it is hit?” The leverage setting falls out of the answer.
Where leverage really does add risk
It would be wrong to say leverage is harmless. It adds risk in three specific ways:
- It permits oversizing. Without leverage your account balance caps the position. With it, nothing stops a position many times too large except your own rule.
- Liquidation can arrive before the stop. If the stop sits further away than the liquidation distance in the table above, the stop is decoration. The exchange will close the position first, usually at a worse price and with a liquidation fee.
- Gaps and fast moves. A stop is an instruction, not a guarantee of price. In a fast market the fill can be well beyond the stop level, and with a large position that slippage is large too.
A short checklist
- Decide the loss you accept per position, as a share of the account, first.
- Place the stop where the idea is wrong, not where the loss feels comfortable.
- Size the position from those two numbers.
- Check that liquidation sits clearly beyond the stop, with room to spare.
- Only then look at what leverage that implies. If it is high, the position is probably too large or the stop too tight.
What this does not promise
Nothing here makes leveraged products safe. They can lose the full margin very quickly, funding costs accrue while a position is open, and many people should not use them at all. This is an explanation of the mechanics, so that the number on the slider is understood for what it is.
Unfamiliar term? The glossary covers margin, liquidation and funding in plain language.
Educational content only. Stralines Labs Private Limited is a software company. Nothing here is investment advice. Crypto markets are highly volatile and trading can be risky; past prices do not predict future results.