What is leverage in forex trading?
Written by an ex-institutional trader. What leverage is, how it lets a small deposit control a large position, the ASIC leverage caps that apply in Australia, and why the same force that magnifies gains magnifies losses just as fast.
Direct answer
Leverage in forex lets you control a large position with a small deposit, expressed as a ratio such as 30:1. At 30:1, AUD 1,000 of your own money controls a AUD 30,000 position, with the broker effectively lending you the rest. Leverage magnifies your exposure, so a small price move produces a much larger gain or loss relative to your deposit than trading unleveraged would.
In Australia, ASIC caps retail leverage by asset class: 30:1 on major currency pairs, 20:1 on minor pairs and gold, 10:1 on other commodities, 5:1 on shares and 2:1 on crypto. These caps exist because leverage cuts both ways: the same 30:1 that doubles a small gain also doubles a small loss, and most retail traders who lose money do so because leverage turned a modest adverse move into a large one. Leverage is a tool, not free money.
What leverage is
Leverage is the ability to control a trading position much larger than the money you put up, using funds effectively provided by the broker. It is written as a ratio. At 30:1, every dollar of your own capital controls thirty dollars of market exposure. So with AUD 1,000 and 30:1 leverage you can hold a position worth AUD 30,000.
The appeal is obvious: forex price moves are small in percentage terms, often a fraction of a percent a day, so without leverage you would need a large account to make a position worth trading. Leverage lets a modest account take a meaningful position. The catch, covered below, is that it magnifies the downside exactly as much as the upside.
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How leverage works
A worked example shows the effect. Suppose EUR/USD is at 1.0800 and you expect it to rise.
- Without leverage, AUD 1,000 buys about AUD 1,000 of exposure. If the price rises 1 percent, you make about AUD 10.
- With 30:1 leverage, that same AUD 1,000 of margin controls a AUD 30,000 position. If the price rises 1 percent, you make about AUD 300, a 30 percent return on your deposit.
That is the magnification leverage provides. But reverse the move: if the price falls 1 percent, the leveraged position loses AUD 300, or 30 percent of your deposit, while the unleveraged one loses AUD 10. The leverage did not change the market; it changed the size of your bet relative to your capital. A few percent against a fully-leveraged position can erase a large chunk of an account.
ASIC leverage caps in Australia
Before 2021, some brokers offered Australians leverage of 200:1, 500:1 or more, and the losses were severe enough that ASIC stepped in. Retail leverage is now capped by asset class:
| Asset class | Maximum retail leverage |
|---|---|
| Major currency pairs | 30:1 |
| Minor currency pairs, gold, major indices | 20:1 |
| Other commodities, minor indices | 10:1 |
| Individual shares | 5:1 |
| Cryptocurrencies | 2:1 |
These caps apply at every ASIC-regulated broker and are a consumer protection, not a broker limitation. A broker offering an Australian retail client higher leverage than this is operating outside the ASIC framework, which is a clear warning sign. Wholesale or professional clients can exceed the caps, but only by giving up retail protections such as negative balance protection, a trade that rarely makes sense for retail-scale capital.
Leverage and margin
Leverage and margin describe the same relationship from opposite ends. Leverage is the ratio of position size to the deposit required; margin is that deposit. The two are linked by a simple rule: the margin requirement is one divided by the leverage.
At 30:1 leverage, the margin requirement is 1 over 30, about 3.3 percent. So a AUD 30,000 EUR/USD position needs about AUD 1,000 of margin. At 20:1 the margin is 5 percent, at 10:1 it is 10 percent, and so on down the table above. Higher leverage means less margin tied up, which frees capital but also means a smaller adverse move brings the position closer to a margin call. The margin calculator works out the exact margin for any position and leverage in AUD.
Why leverage cuts both ways
The single most important thing to understand about leverage is that it is symmetric. Every example that shows leverage turning a small gain into a large one is also, with the sign flipped, an example of it turning a small loss into a large one. The marketing emphasises the upside; the loss statistics reflect the downside, with 70 to 85 percent of retail CFD accounts losing money.
The way experienced traders handle this is to ignore the maximum leverage and let position sizing set their risk instead. You decide how much of your account to risk on a trade, usually a small fixed percentage, and size the position so that your stop loss equals that risk. Done this way, the available leverage becomes almost irrelevant, because your real exposure is controlled by the position size and the stop, not by the broker's cap. The position size calculator does that sizing for you.
Leverage is a genuine tool that makes small accounts viable. It is also the mechanism behind most blown accounts. Treat the cap as a ceiling, not a target, and the related basics, what is a pip, what is the spread and what is margin, complete the picture of how cost and risk fit together.
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Examples use indicative prices for illustration and are not financial advice. Last reviewed: 2026-06-01.
Frequently asked questions
What is leverage in forex?
Leverage is the use of a small deposit to control a much larger trading position, expressed as a ratio such as 30:1. At 30:1, every dollar of your own money controls thirty dollars of market exposure, with the broker providing the rest. It lets you take a position larger than your account balance, which magnifies both the gains and the losses relative to the capital you put up.
What is the maximum forex leverage in Australia?
ASIC caps retail forex leverage at 30:1 on major currency pairs and 20:1 on minor pairs. Other asset classes are lower: 20:1 on gold, 10:1 on other commodities and minor indices, 5:1 on shares and 2:1 on crypto. These caps apply at every ASIC-regulated broker. Wholesale or professional clients can access higher leverage, but they give up retail protections such as negative balance protection in exchange, which is rarely worthwhile at retail scale.
Is high leverage good or bad?
Leverage is neutral in itself, but high leverage is dangerous in inexperienced hands because it magnifies losses as much as gains. The 30:1 cap that lets a small account take a meaningful position is also what can wipe that account out on a modest adverse move if the position is oversized. Experienced traders often use far less than the maximum available leverage and let position sizing, not the leverage cap, control their risk.
How does leverage relate to margin?
They are two sides of the same coin. Leverage is the ratio of position size to deposit; margin is the deposit itself. At 30:1 leverage the margin requirement is 1 divided by 30, or about 3.3 percent of the position value. So a AUD 30,000 position at 30:1 requires about AUD 1,000 of margin. Higher leverage means a smaller margin requirement, which frees up capital but also means a smaller adverse move can threaten the position.
Can you lose more than your deposit with leverage?
On a retail account with an ASIC-regulated broker, no. ASIC requires negative balance protection for retail clients, so you cannot lose more than the balance in your account even if a leveraged position gaps badly against you. You can still lose your entire balance, which is the realistic risk. Professional or wholesale accounts may waive negative balance protection, which is one reason most retail traders should not opt into that classification.
How much leverage should a beginner use?
Less than the maximum. A beginner should let position sizing, not the leverage cap, set their risk, deciding how much of the account to risk per trade as a small fixed percentage and sizing the position to that. Used this way, the available leverage barely matters, because the risk is controlled by position size and the stop loss. The mistake beginners make is treating the maximum leverage as a target rather than a ceiling.
