Leverage is one of the most powerful tools in trading — and one of the most dangerous if misunderstood. This guide explains exactly how it works in plain English.
Leverage lets you control a larger position than your account balance. Instead of needing $100,000 to trade a standard forex lot, you might only need $1,000 — with 100:1 leverage.
Think of it like a mortgage. You put down 10% and control 100% of the property's value. Leverage in trading works the same way.
Leverage is expressed as a ratio: 10:1, 50:1, 100:1, 500:1. The first number is the total position size relative to your margin (deposit).
At 50:1 leverage, $1,000 of your money controls $50,000 worth of currency.
Calculate your margin requirements and total exposure with our Leverage Calculator.
With 50:1 leverage on a $1,000 position controlling $50,000:
This is why leverage is attractive — small moves can generate large returns.
The same math works in reverse:
At high leverage, even small adverse moves can wipe out your entire position. This is called a margin call.
Margin is the deposit required to open a leveraged position. It's calculated as:
Required Margin = Position Size ÷ Leverage
At 50:1, to open a $100,000 position you need $2,000 margin. If your account falls below the required margin level, your broker will close your positions automatically.
A good rule: use leverage that would require at least a 2-5% adverse move to trigger your stop loss. This gives your trade room to breathe while keeping risk controlled.