How Quickly Must a Trader Typically Meet a Margin Call?
The time frame for meeting a margin call is very short, often within 24 hours or even less, depending on the exchange and the volatility of the market. Many exchanges require the funds to be deposited before the start of the next trading day.
In highly volatile crypto markets, some exchanges may issue 'intraday margin calls' that require immediate attention. Failure to meet the call promptly results in the mandatory liquidation of the position.