How to Calculate Margin in Forex
What is Margin in Forex Trading?
Margin is a deposit required by your broker to open a position. It is not a fee or cost—it is a security deposit that is returned when you close the trade. For example, if you want to trade $100,000 worth of currency (1 standard lot), your broker may only require $200 as margin if you use 1:500 leverage.
The Margin Calculation Formula
The formula for calculating margin is:
Margin = (Lot Size × Contract Size × Current Price) / Leverage
- Lot Size: 1 standard lot = 100,000 units; 1 mini lot = 10,000 units; 1 micro lot = 1,000 units.
- Contract Size: Typically 100,000 for standard lots.
- Current Price: The current exchange rate of the currency pair.
- Leverage: The ratio offered by your broker (e.g., 1:500).
Example for Pakistan Traders
Suppose you trade 0.1 lots (mini lot) of EUR/USD at 1.1000 with 1:500 leverage. The margin required = (10,000 × 1.1000) / 500 = $22. At an exchange rate of PKR 280 per USD, your margin in PKR is 22 × 280 = PKR 6,160. If your broker allows Islamic accounts (swap-free), no overnight interest is charged, making margin calculation simpler for long-term trades.
How Leverage Affects Margin
Higher leverage means lower margin. For example, with 1:100 leverage, margin for the same trade is $110; with 1:500, it is $22. Pakistan brokers often offer high leverage to attract retail traders, but remember that higher leverage also increases your risk. Always calculate margin before entering a trade to avoid margin calls.

