Isolated Margin
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Key Takeaway
A margin mode in which only the capital specifically assigned to a position is at risk; if liquidated, the loss is limited to the assigned margin and does not affect the rest of the account balance; the correct default mode for speculative directional trades.
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What Is Isolated Margin?
A margin mode in which only the capital specifically assigned to a position is at risk; if liquidated, the loss is limited to the assigned margin and does not affect the rest of the account balance; the correct default mode for speculative directional trades.
How Isolated Margin Works
Frequently Asked Questions
What is isolated margin in simple terms?
Isolated margin means that only the money you specifically assign to a trade is at risk for that trade. If you assign $500 to a position and it gets liquidated, you lose $500 — your remaining account balance is completely untouched. This is the opposite of cross margin, where the entire account can be drawn upon. Isolated margin lets you define your maximum loss upfront by choosing how much to allocate. It is the recommended mode for speculative directional trades in perpetual futures.
How does isolated margin work in crypto derivatives?
When you select isolated margin mode and open a position, the exchange separates the assigned margin into a dedicated pool for that position. Only that pool absorbs losses as price moves against you. When the pool reaches the maintenance margin threshold, the exchange liquidates the position. The rest of your account balance never enters the calculation. You can adjust the isolated margin for an open position by adding more capital from your account balance — which raises the liquidation price — or withdrawing excess margin if the position is profitable.
How do traders use isolated margin to manage risk?
The J13 framework for isolated margin use: (1) Determine maximum acceptable loss for the trade as a percentage of total account capital — for example, 2%. (2) Size the margin allocation accordingly: 2% of a $10,000 account = $200 isolated margin. (3) Choose leverage to achieve the desired notional exposure within that margin. (4) Place a stop-loss order between entry and the liquidation price — at the technical level where the thesis is invalidated. (5) Accept that if the stop is not triggered and the position reaches liquidation, the loss is capped at the $200 margin. Never open a position in isolated mode without a stop-loss order.
Common Misconceptions About Isolated Margin
Isolated margin means you cannot lose more than your assigned margin under any circumstances
In isolated margin mode, liquidation loss is capped at the assigned margin. However, in extreme fast-market conditions where price gaps through the liquidation price before the engine can execute, the exchange's Insurance Fund covers the shortfall. In rare cases where the Insurance Fund is depleted, Auto-Deleveraging may occur. While isolated margin provides strong protection in normal conditions, gap risk in illiquid markets can cause slippage on the liquidation execution itself. This is why stop-loss orders placed well above liquidation remain essential even in isolated mode.
Isolated margin is inferior to cross margin because it limits the buffer
Isolated margin's limitation — that only the assigned margin absorbs losses — is a deliberate feature, not a deficiency. It prevents a single losing trade from consuming the entire account. Cross margin's larger buffer comes with a critical cost: a catastrophic move in one position can trigger a cascade that liquidates all positions, including profitable ones. For retail traders running multiple speculative positions, isolated margin provides per-position loss containment that cross margin cannot. Cross margin is appropriate for institutional hedging books with offsetting positions, not for retail speculative trading.
You should always add more isolated margin to a losing position to avoid liquidation
Adding isolated margin to a losing position only makes sense if the trade thesis remains valid and the added capital falls within acceptable risk parameters. Adding margin to avoid liquidation without a thesis is averaging down on a losing trade — it converts a controlled, pre-defined loss into a larger, open-ended loss. The correct discipline: the decision to add margin or exit should be made based on whether price action still supports the original thesis, not based on the desire to avoid crystallizing a loss. Pre-define this decision before opening the trade.