What Is Margin Call?

A margin call is a warning issued by your forex broker when your account equity falls below the required margin level to maintain your open positions. It's one of the most important risk management concepts in leveraged trading — and one that every forex trader must understand before risking real money.

Understanding Margin in Forex

Before diving into margin calls, it's important to understand what margin is.

When you open a leveraged position, your broker requires you to set aside a portion of your account balance as collateral. This is called the required margin or used margin. The remaining balance in your account is called free margin — the funds available to open new trades or absorb losses.

Example:

• Account balance: $1,000
• You open a 0.1 lot EUR/USD trade with 1:100 leverage
• Required margin: $100
• Free margin: $900

What Triggers a Margin Call?

A margin call is triggered when your margin level drops to a specific threshold set by your broker — typically 100%.

Margin Level is calculated as:

Margin Level (%) = (Equity / Used Margin) × 100

• Equity = Account balance + Unrealized profit or loss
• If the market moves against you, equity drops
• When equity falls to 100% of used margin → Margin Call

Example:

• Used margin: $100
• Equity falls to $100
• Margin level = 100% → Broker issues a margin call

What Happens During a Margin Call?

Depending on the broker, a margin call may trigger one or both of the following:

• Notification: The broker alerts you by email or platform notification to deposit funds or close positions.
• Automatic position closure: Some brokers begin closing your least profitable trades automatically to bring your margin level back up (this is called the stop-out level, usually set at 50%).

Not all brokers give you time to respond. Some proceed directly to closing positions as soon as the stop-out level is reached.

Margin Call vs. Stop Out Level

The margin call is a warning; the stop-out is the execution. Together, they protect both you and the broker from negative balances.

How to Avoid a Margin Call

• Use appropriate position sizing. Never risk more than 1–2% of your account on a single trade.
• Set stop-loss orders on every trade to limit your maximum loss.
• Monitor your free margin regularly, especially during high-volatility events.
• Avoid over-leveraging. Higher leverage means smaller price moves can trigger a margin call.
• Keep a margin buffer. Maintain free margin well above the required level, especially when holding trades overnight.

Understanding margin calls is not just about damage control — it's about building disciplined trading habits that protect your capital over the long term.

Image suggestion: Diagram showing account equity declining toward the margin call and stop-out levels.