How to Calculate Margin in Forex
What Is Margin in Forex?
Margin is not a fee or cost; it is a deposit required by your broker to open a position. It is calculated as a percentage of the full trade size. For example, with 1:100 leverage, you only need 1% of the trade value as margin.
The Margin Formula
The basic formula is: Margin = (Trade Size in Lots x Contract Size) / Leverage. Contract size is usually 100,000 units for standard lots. If you trade a mini lot (0.1), it is 10,000 units. Example for a Russia trader: You want to buy 0.5 lots of EUR/USD with 1:200 leverage. Margin = (0.5 x 100,000) / 200 = 250 USD.
How Leverage Affects Margin
Higher leverage means lower margin requirements but higher risk. If you use 1:500 leverage, the same 0.5 lot trade requires only 100 USD margin. However, a small price move can wipe out your account. Russia traders should use leverage cautiously, especially with volatile currency pairs like USD/RUB.
Margin Calculation Example for Russia Traders
Suppose you have a $1,000 account and want to trade 0.2 lots of GBP/USD with 1:100 leverage. Margin = (0.2 x 100,000) / 100 = $200. Your used margin is $200, and free margin is $800. If the trade moves against you, your equity drops. When equity falls below $200, you get a margin call.