How to Calculate Margin in Forex
What is Margin in Forex?
Margin is not a fee or cost—it’s a security deposit held by your broker to cover potential losses. When you trade on leverage, the broker lends you money, and the margin is your share of the trade. For example, with 1:100 leverage, you control $100,000 with only $1,000 margin.
The Margin Formula
Margin = (Lot Size × Contract Size × Current Price) / Leverage. Lot size is the number of units (e.g., 1 lot = 100,000 units). Contract size is usually 100,000 for standard lots. Current price is the market price of the currency pair. Leverage is the ratio provided by your broker.
Example for Myanmar Traders
Suppose you want to trade 0.1 lot (10,000 units) of USD/JPY at 110.00 with 1:100 leverage. Margin = (0.1 × 100,000 × 110.00) / 100 = 11,000 JPY. If your account is in USD, convert at current exchange rate (e.g., 110 JPY/USD → 100 USD). So you need $100 margin.
Used vs Free Margin
Used margin is the total margin locked by open positions. Free margin is the equity minus used margin—available to open new trades. For Myanmar traders, it’s crucial to maintain free margin to avoid margin calls.
Margin Level
Margin Level = (Equity / Used Margin) × 100%. If it falls below 100%, you get a margin call. Below 50%, stop out occurs. Always keep margin level above 200% for safety.