How to Calculate Margin in Forex
What Is Margin in Forex?
Margin is not a fee or transaction cost. It is a deposit held by the broker to cover potential losses. When you trade on margin, you borrow money from your broker to increase your position size. For example, with 1:100 leverage, you can control $100,000 with just $1,000. Margin protects both you and the broker from excessive losses.
The Margin Formula
The standard formula is: Margin = (Lot Size × Contract Size × Current Price) / Leverage. Lot size is the number of lots (standard = 100,000 units, mini = 10,000, micro = 1,000). Contract size is typically 100,000 units for standard lots. Current price is the market price of the currency pair. Leverage is the ratio offered by your broker, e.g., 1:50, 1:100, or 1:200.
Example for Togo Traders
Suppose you want to trade 1 standard lot of EUR/USD at 1.10 with 1:100 leverage. Margin = (1 × 100,000 × 1.10) / 100 = $1,100. If you use 1:200 leverage, margin = (1 × 100,000 × 1.10) / 200 = $550. Lower leverage means higher margin but lower risk. Togo traders should choose leverage based on their risk tolerance and account size.
Margin in Trading Platforms
Most trading platforms like MetaTrader 4 (MT4) and MetaTrader 5 (MT5) automatically calculate margin for you. You can see your margin level in the Trade tab. Margin level = (Equity / Used Margin) × 100%. If margin level falls below 100%, you risk a margin call. Togo traders should monitor this regularly to avoid forced closures.
Used vs Free Margin
Used margin is the total margin locked by open positions. Free margin is the amount available to open new trades. For example, if your account balance is $5,000 and used margin is $1,100, your free margin is $3,900. Togo traders should always keep sufficient free margin to absorb market volatility.