Maintenance Margin = The % net equity in your margin wallet (Net Equity = Margin Wallet Balance + P/L (incl. Fees to close) - Funding costs.) to open positions required to avoid liquidation for a pair.
You will receive a margin call (website and email notification when possible) when the net value of your account equity (Margin Wallet value + P/L+ Funding cost) drops below 1.5x the maintenance margin of the value of your open positions. When the net value of your account equity falls below the required maintenance margin, your positions will be force-liquidated.
Please note that in case of a sudden and wide market movement the email notification might not be delivered quickly enough or not delivered at all if your account equity drops below 1.5x the maintenance margin causing your positions to get force-liquidated within seconds. During periods of high volatility make sure to hold enough collateral to sustain your positions and monitor the website for further notifications.
The maintenance margin varies according to the trading pairs you open positions with. If you are trading pairs that Bitfinex considers higher risk, then you may see your position liquidated at a higher maintenance margin.
With an open margin position, you will see an estimated liquidation price (the price at which your position would be liquidated). Please note that this is only indicative and not a contractual price.
Example of Required Equity
With a margin position worth $500 USD and a maintenance margin value of 15%, the Margin Wallet net equity must not fall below $75 to prevent a forced liquidation.
When a position is force-liquidated, the system places a limit order at the zero-equity price or a market order for smaller positions.
Trading with certain pairs influences the maintenance margin required.
On the summary box, you would be able to see the Risk-Adjusted Initial Margin & Risk-Adjusted Maintenance Margin. Please note this list is subject to change.