One bad candle at 3 AM can wipe a leveraged position before you wake up. In crypto's 24/7 markets, a margin call arrives fast: borrowed funds amplify losses, account equity drops below maintenance margin, and forced liquidation follows if you don't act.
What Is a Margin Call?
A margin call is a notice from your platform demanding you restore the required margin. It occurs when your margin account equity falls below the exchange's maintenance margin and the broker's required minimum for open exposure. Losses, fees, or collateral value changes can shrink your cushion and trigger the warning.
In margin trading, you open a leveraged position using borrowed funds plus your own capital. Your collateral secures the loan. If equity drops too far, the platform issues a margin call so you can add funds, reduce exposure, or close part of the trade to get back above the threshold.
Why Do Margin Calls Happen in Crypto?
Margin calls happen when losses, fees, or collateral shifts reduce equity below required levels. Higher leverage shrinks the buffer, so small moves can trigger warnings quickly. Key factors include borrowed funds magnifying losses, falling collateral value, adverse price movement, high leverage reducing the safety margin, and funding payments in perpetual contracts that drain equity over time.
Step-by-Step Margin Call Process
Most platforms follow the same flow from opening a position to forced liquidation:
1. Open a leveraged position using your own funds plus borrowed capital.
2. Post collateral — cash, crypto, or marginable securities secure the loan.
3. Market moves against you — price changes reduce position value and equity.
4. Unrealized losses cut equity — the margin level drops as losses grow.
5. Maintenance margin breach — equity falls below the broker's required minimum.
6. Margin call notification — the platform demands immediate action.
7. Take action — deposit more collateral, reduce or close positions, or face liquidation.
Common Triggers
Price declines for longs, price increases for shorts, falling collateral value, rising unrealized losses, borrowing costs, trading fees, and funding payments in perpetuals all drain equity and push accounts toward a margin call.
What Happens After a Margin Call?
Traders have five options: add more collateral (deposit additional funds), reduce position size (lower borrowed exposure), close part of the position (cut unrealized losses), close the full position (exit all trades), or do nothing and face liquidation. If you choose the last, the platform will forcibly sell your holdings, often at unfavorable prices, to recover its loan.
Margin Call vs. Liquidation
A margin call is the warning; liquidation is the enforcement. The call asks you to restore compliance; if the account can't meet requirements, the platform liquidates positions to protect itself. Some platforms perform partial liquidation — closing only enough to restore margin — while others go for full liquidation with penalties and fees.
How to Reduce Margin Call Risk
Key strategies: use lower leverage (a smaller ratio keeps you further from the liquidation price), maintain a larger collateral buffer (deposit more than the minimum), know your liquidation price before entering, set stop-loss orders, size positions carefully (avoid overexposing your capital), monitor fees and funding rates, avoid too many open positions (they can drag each other down), and read platform margin rules in advance.
Common Mistakes
Beginners often treat leverage as free buying power, confuse margin calls with liquidation, ignore maintenance margin, assume the liquidation price is exact, use cross margin without understanding account-wide risk, and forget to account for fees, interest, and funding payments. These errors together can blow up an account in a single adverse move.