How to Calculate Margin in Forex
What Is Margin in Forex Trading?
Margin is not a fee or cost—it is a deposit held by the broker to cover potential losses. It allows you to control a larger position with a smaller amount of capital. For example, with 1:100 leverage, you can control $10,000 with just $100 margin.
Margin Calculation Formula
The basic formula is: Required Margin = (Trade Size / Leverage) × Exchange Rate. Trade size is in units of the base currency. Leverage is the ratio provided by the broker. Exchange rate converts the base currency to your account currency (USD for Algeria traders).
Example for Algeria Traders
Suppose you want to trade EUR/USD with 1 standard lot (100,000 units) at 1.2000 exchange rate, using 1:100 leverage. Required Margin = (100,000 / 100) × 1.2000 = 1,200 USD. You need $1,200 in your account to open this trade. If you use 1:500 leverage, margin drops to 240 USD.
Types of Margin
Used Margin is the total margin locked in open positions. Free Margin is the money available to open new trades. Margin Level = (Equity / Used Margin) × 100%. If margin level drops below the broker's threshold (e.g., 100%), you get a margin call.
How Leverage Affects Margin
Higher leverage reduces margin required but increases risk. For Algeria traders, using leverage above 1:200 is risky due to market volatility. Always calculate margin before entering a trade to ensure you have enough free margin.