How margin calls work (or don’t) in crypto
In equities, a brokerage margin call gives you a day or two to wire in more funds or voluntarily close positions. Crypto exchanges skip the grace period: when your margin ratio drops below the maintenance threshold, the system liquidates automatically. There’s no one to argue with.
A few crypto venues still use the term “margin call” for earlier warnings — a notification, email, or in-app alert when your margin ratio drops below a soft threshold (e.g. 130% on spot margin). These give you a window to top up collateral manually before hitting the hard liquidation level.
DeFi lending protocols follow the same automated pattern. On Aave, once LTV crosses the liquidation threshold, any keeper can liquidate the loan for a bonus. There’s no call — the mechanism is permissionless and instantaneous.
The practical workflow
Experienced traders don’t wait for margin calls. They:
- Monitor the liquidation price, not the current price. Most trading UIs display both.
- Set custom alerts on the liquidation buffer (e.g. “alert me when margin drops below 150%”).
- Pre-position additional collateral in the exchange account, ready to add with one click.
- Use isolated margin where possible so a call on one position can’t cascade into others.
Risks and considerations
The specific crypto hazard is speed. A margin call in a fast-moving market can escalate to liquidation in the time it takes to log in and deposit more collateral — especially if the exchange has latency issues or if the underlying network is congested. Cross-chain traders have additional lag: bridging USDC from Ethereum to Arbitrum to top up a position can take 10+ minutes, longer than most liquidation cascades last. Treat any margin warning as a final signal to reduce the position, not a reason to “double down and wait it out.”