Free Margin (มาร์จิ้นส่วนที่เหลือ)

Free Margin is the money in your trading account that is not being held as security for your open trades. It is calculated with a simple formula:

Free Margin = Equity − Used Margin

Equity is your account balance plus or minus the profit or loss on your open trades. Used Margin is the amount the broker sets aside to keep your current positions open.

A simple example

You deposit $1,000 and open a trade that needs $200 of used margin. The trade is currently losing $50.

• Equity = $1,000 − $50 = $950
• Used Margin = $200
• Free Margin = $950 − $200 = $750

If the trade moves into profit, equity rises and Free Margin rises too. If the trade loses more, Free Margin falls.

Why it matters

Free Margin shows how much room you have left. You need it to open new positions, and it also acts as a cushion for losses on trades that are already open. If Free Margin drops to zero, you cannot open new trades. If equity keeps falling toward the required margin level, you may receive a margin call or have positions closed automatically.

Common beginner mistake

Many beginners see a large Free Margin number and use all of it to open big positions. This leaves almost no cushion, so a small price move against you can cause a margin call. Keeping plenty of Free Margin unused is a basic part of managing risk.