How does leverage work in forex trading?

Last Update Thursday 20 August 2026 13:45

What is leverage in forex trading and how does it work?

Leverage in forex trading is a mechanism that enables you to hold a larger position in the foreign exchange market with a comparatively smaller amount of capital. Typically expressed as a ratio, leverage works by using funds borrowed from your trading broker to increase your position size beyond what might be possible with your own money alone. For example, with a leverage ratio of 20:1, you could open a position worth £20,000 with just £1,000 of your own funds.

The amount of leverage available often depends on how volatile or liquid a market is. Less stable and less traded markets typically offer lower leverage, which helps protect your positions from sudden price changes. Markets with high liquidity can offer higher leverage ratios. Forex trading is known for having some of the highest leverage ratios in finance — in the stock market, leverage usually starts at 5:1, whereas forex leverage can go well beyond 30:1 for the most commonly traded currency pairs, subject to regulatory limits.

Leverage will, depending on the outcome of a trade, either amplify your returns or increase your losses. Make sure you understand how it works and take steps to manage your risk before engaging in forex trading.

Leverage and margin explained

Leverage and margin are closely related but distinct concepts. Leverage is the mechanism that magnifies your profits and losses, while margin is the specific amount of money you must have as collateral.

Leverage enables you to control a larger position size with a proportionally smaller amount of capital, usually expressed as a ratio such as 20:1. Margin is the deposit you put down to open and maintain a leveraged position, representing a fraction of your total trade size. Some brokers have higher margin requirements for more volatile currency pairs, where there's an increased risk of large price fluctuations. Note that because the margin you pay doesn't represent your full market exposure, you could lose more than this outlay if the market moves against you.

How to calculate leverage in trading

To calculate leverage, use the formula: total value of trade divided by margin required. For example, if you're trading £40,000 worth of GBP/USD and the margin required is £2,000, the leverage is £40,000 / £2,000 = 20. This means you're using 20:1 leverage.

Example of leverage in forex trading

Let's say you choose to trade GBP/USD using a leverage ratio of 20:1. This means you can hold a position worth £20,000 with £1,000 of your own money. If the underlying price of the GBP/USD pair moves by 1% in either direction, the value of your position will change by £200 (£20,000 x 0.01). So you'd gain or lose £200 on your initial margin of £1,000, demonstrating the power — and risk — of leverage in trading.

Trade forex with leverage 

Open £20k exposure from £1k with 20:1.

Benefits and risks of leverage in forex trading

Leverage offers the potential for amplified profits, because gains are calculated on the full position size, so even small price changes could lead to significant returns relative to your initial deposit. It can also improve capital efficiency by reducing the funds required to enter trades, potentially enabling you to diversify across multiple pairs — though this also increases overall risk exposure. And because leveraged forex trading doesn't involve actual ownership of the currencies, you can go long or short on forex prices.

On the risk side, leverage magnifies losses as well as profits — a small price move against your position could result in significant losses relative to your initial outlay. It also increases your exposure to market volatility, and sudden movements common in forex could quickly affect your account balance. If a leveraged position moves against you, we may issue a margin call, at which point you'd need to either close positions or add more funds to meet the minimum margin requirement.

Benefits and risks of forex trading

Beyond leverage, forex trading has its own benefits and risks. It offers 24/5 trading — with us, you can trade forex from 9pm Sunday to 10pm Friday (UK time). It provides global market access to over 80 currency pairs, and high liquidity, as forex is the most liquid market in the world. On the risk side, slippage can be an issue given how volatile the market can be, though you can add stops and limits to help mitigate it. Some pairs are more volatile than others, particularly minor pairs with lower liquidity like USD/SEK and NZD/SGD.

Leverage in forex trading summed up

• Leverage enables you to control larger currency positions with proportionally smaller amounts of capital — 20:1 leverage means opening a position worth £20,000 with £1,000
• While leverage can amplify profits, it can also magnify losses, so understanding how it works and managing your risk is crucial
• Leverage and margin are related but distinct: leverage is the mechanism that magnifies profits and losses, while margin is the collateral required
• The formula to calculate leverage is total trade value divided by margin required — a £40,000 trade with £2,000 margin equates to 20:1 leverage

Ready to trade forex? Open a live account to trade over 80 currency pairs with leverage, or practise on a demo account with £10,000 in virtual funds first. For more, see our guides on what is forex trading and risk management.