Isolated margin and cross margin: What is the difference?
One of the first choices in futures trading is isolated or cross margin. Even at the same leverage, this setting can substantially change liquidation risk and capital efficiency.
The basic concepts
Isolated margin confines a position's loss allowance to the margin assigned to it. Once that margin is exhausted, only that position is liquidated, leaving the rest of the account balance untouched.
Cross margin shares the account's entire available balance as one margin pool. When a position loses money, other available funds automatically support it and delay liquidation. This gives the position more staying power, but liquidation can put the whole account at risk.
Liquidation risk: How much can be lost?
The central difference is the maximum scope of losses. Isolated margin limits losses to the allocated margin; cross margin exposes the entire account balance.
- Isolated: A decline of about 10% from entry exhausts the 100 USDT and liquidates that position. The loss is 100 USDT, and the remaining 900 USDT stays intact.
- Cross: After the same 10% decline, the other 900 USDT supports the margin and keeps the position open. If prices continue falling, however, the entire 1,000 USDT could be lost in the worst case.
Capital efficiency: Staying power and its cost
Cross margin can draw on the full balance, placing the liquidation price farther away under the same volatility. This reduces liquidation from temporary fluctuations and allows more efficient sharing of margin across positions. Isolated margin, by contrast, makes risk management more intuitive because each position has a clear loss limit, but thin margin can mean liquidation from a small move.
| Aspect | Isolated | Cross |
|---|---|---|
| Loss limit | Allocated margin only | Entire account balance |
| Liquidation frequency | Relatively frequent | Less frequent; liquidation price farther away |
| Capital efficiency | Lower | Higher |
| Understanding risk | Easier, with a clear limit | Harder, with cascading risk |
Which is safer for beginners?
Beginners generally find isolated margin easier to handle. The amount that can be lost on a trade is fixed from the start, so a mistaken judgment does not spread losses across the whole account. Cross margin can look safer because it keeps a position alive longer, but that staying power can let losses grow and end in one large loss.
Neither margin mode prevents losses themselves. Whichever you use, first set stop-loss rules and allocate only margin you can afford to lose. Lowering leverage is also one of the clearest ways to move the liquidation price farther away.
- Limit the margin committed to one trade to a set proportion of the account.
- Check both the liquidation price and stop price before entering.
- Until you are familiar with the process, start with isolated margin and low leverage.
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