Understanding Leverage

Leverage allows you to control a position larger than the capital you deposit as margin. With 10:1 leverage, a $1,000 deposit controls a $10,000 position. With 100:1 leverage, the same $1,000 controls a $100,000 position.

Leverage is expressed as a ratio (50:1, 100:1) or as a percentage margin requirement. A 2% margin requirement is equivalent to 50:1 leverage — you must deposit 2% of the full position value.

The appeal of leverage is that it amplifies potential returns. A 1% move in EUR/USD on a $10,000 position produces a $100 gain. The same 1% move on a $1,000 position (no leverage) produces a $10 gain.

The danger of leverage is that it amplifies losses with exactly the same force. A 1% adverse move on a $10,000 leveraged position controlled by $1,000 of margin produces a $100 loss — 10% of the deposit gone on a 1% price move.

When you open a leveraged position, your broker sets aside a portion of your account as margin — the collateral required to maintain the position. This is not a fee; it is a security deposit that is returned (minus any losses) when the position is closed.

Initial margin is the amount required to open the position. Maintenance margin (or variation margin) is the minimum level your account equity must remain above while the position is open. If your account equity falls below the maintenance margin — typically because the position is losing — you will receive a margin call.

A margin call is a notification from your broker that your account equity has fallen close to the minimum required to maintain your open positions. At this point, you must either deposit additional funds or reduce your positions.

If you do not act and your equity continues to fall, the broker will automatically close some or all of your positions at the prevailing market price to prevent your account from going into a negative balance. This is called a stop-out. Stop-out levels are specified in your account terms and vary by broker and account type.

Suppose you open a EUR/USD position with the following parameters:

• Account balance: $5,000
• Position size: 1 standard lot (100,000 EUR/USD)
• Leverage: 100:1
• Margin required: $1,000 (1% of $100,000)
• Pip value: approximately $10 per pip

If the market moves 50 pips in your favour, your position gains $500 — a 10% return on your $5,000 account, driven by a 0.46% move in the exchange rate.

If the market moves 50 pips against you, your position loses $500 — a 10% loss on your account. If the market moves 400 pips against you without the position being closed, your potential loss equals your entire account balance.

Regulatory frameworks in many jurisdictions impose limits on the maximum leverage available to retail clients, with the aim of reducing the risk of large losses. These limits vary by jurisdiction and by instrument — leverage limits on major forex pairs are typically higher than on indices or commodities.

Professional clients — who meet specific eligibility criteria related to their trading experience, portfolio size, and professional background — may have access to higher leverage. Qualifying as a professional client may reduce certain regulatory protections. Clients considering professional classification should ensure they understand the implications.

Leverage is a tool. Like any tool, its effect depends entirely on how it is used. Experienced traders often use leverage well below the maximum available, recognising that the primary function of leverage is not to maximise position size but to allow efficient use of capital across a diversified portfolio.

The most common leverage-related mistake is using the maximum available leverage on a single position, eliminating the margin buffer that protects against normal market volatility. A conservative approach — sizing positions so that the margin in use represents a fraction of total account equity — is more sustainable and more consistent with professional risk management practice.