Maintenance Margin
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Key Takeaway
The minimum margin balance required to keep a leveraged derivatives position open; when the margin balance falls to this level, the exchange triggers automatic liquidation; typically 0.5% of notional value for standard-sized positions on major exchanges.
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What Is Maintenance Margin?
The minimum margin balance required to keep a leveraged derivatives position open; when the margin balance falls to this level, the exchange triggers automatic liquidation; typically 0.5% of notional value for standard-sized positions on major exchanges.
How Maintenance Margin Works
Frequently Asked Questions
What is maintenance margin in simple terms?
Maintenance margin is the minimum balance your margin account must hold to keep a leveraged position open. Think of it as the danger zone floor. As price moves against your position, losses reduce your margin balance. When that balance falls to the maintenance margin level, the exchange automatically closes your position — regardless of your preferences — to ensure it can recover the capital it effectively lent you. On Binance, the typical maintenance margin for standard-sized positions starts at 0.5% of the position's notional value.
How does maintenance margin work in crypto derivatives?
Maintenance margin works as the liquidation trigger. When you open a leveraged position, the exchange sets a maintenance margin threshold — typically 0.5% of notional value. Your margin balance starts at the initial margin level and decreases as price moves against you. Once that balance hits the maintenance margin threshold, the liquidation engine closes your position automatically, using the proceeds to repay the exchange's capital. The liquidation price can be calculated from this rate: for a 10x long, it is approximately 9.5% below your entry price.
How do traders use maintenance margin to manage risk?
Traders use maintenance margin as a reference point for three risk management actions: (1) Calculate the liquidation price before opening the position to confirm it is below the stop-loss level. (2) Monitor the margin ratio in real time and set exchange alerts at a personal warning threshold such as 130%. (3) Pre-define the response to a margin alert: add margin only if the trade thesis is still valid; exit the position if the price action has invalidated the thesis. The goal is always to exit on your own terms — never let the maintenance margin trigger be the exit mechanism.
Common Misconceptions About Maintenance Margin
Maintenance margin and initial margin are the same thing
Initial margin and maintenance margin serve entirely different functions. Initial margin is the upfront deposit required to open the position. Maintenance margin is the floor threshold that determines when the position is closed by force. Initial margin is always larger than maintenance margin — the gap between them represents the adverse price move the position can absorb before liquidation. Conflating the two leads to misjudging how much buffer exists between entry and liquidation.
Maintenance margin is fixed at 0.5% regardless of position size
On major exchanges like Binance, maintenance margin rates are tiered based on position size. Smaller positions (under $50,000 notional) typically carry 0.5% maintenance margin. Larger positions — particularly those above $500,000 notional — can carry maintenance margin rates of 1% to 2.5% or higher. This means large positions have their liquidation price proportionally closer to entry than small positions at the same leverage. Traders scaling into larger positions must recalculate their liquidation prices using the correct tiered maintenance margin rate.
Reaching maintenance margin is just a warning, not automatic liquidation
Reaching the maintenance margin threshold triggers automatic, immediate liquidation — it is not a warning level. The exchange does not notify the trader and wait for a response; it executes the liquidation directly to recover capital. Some exchanges use an intermediate Insurance Fund step, but from the trader's perspective, maintenance margin breach means position closure. The margin ratio warning levels displayed on exchange interfaces (e.g., yellow at 150%, red at 120%) are the warnings. Maintenance margin itself is the execution threshold.