What Is Leverage in Forex? Leverage and Margin Explained

Leverage in forex means holding a position worth more than the money you put up. The broker asks you to set aside a fraction of the position's value as margin, a good-faith deposit, and you gain or lose on the full value. With 1:30 leverage, $1,000 of margin holds a $30,000 position; with 1:100, it holds $100,000.

Leverage and margin are two ways of writing the same ratio:

Leverage is written either way round (30:1 and 1:30 mean the same thing), and the conversion is simply margin % = 100 ÷ leverage.

What leverage does not do is change how much a given position makes or loses per pip. One lot of EUR/USD is worth $10 a pip whether it is held with 30:1 or 500:1 leverage. Leverage changes how much of your balance is tied up, and therefore how large a position you are able to open.

Many brokers advertise a single account leverage, such as 1:500, but apply lower leverage to particular instruments: metals, indices, energies, crypto and exotic currency pairs often carry higher margin requirements than the headline figure suggests. The margin requirement on the instrument's own specification page is the one that applies.

The first part, lots × contract size × price, is the position's notional value in the quote currency: dollars for EUR/USD, yen for USD/JPY, euros for GER40. It then has to be converted into your account currency at the current rate.

Worked examples

Two details stand out. For USD/JPY in a dollar account, the notional is simply $100,000, because one lot is 100,000 dollars, even though the platform shows ¥15 million. And when the base currency is your account currency the margin does not change with the price; when it isn't, the margin moves with the exchange rate.

Brokers may calculate margin at the bid, ask or mid price and convert at their own rates, so their figure can differ slightly from a calculator's.

The European Securities and Markets Authority (ESMA) introduced caps on the leverage brokers may offer retail clients on CFDs, including rolling spot forex, in 2018. National regulators across the EU have since made them permanent, and the UK's Financial Conduct Authority applies the same limits.

Note the definition of a major. AUD/USD and NZD/USD are not majors under these rules, so their retail limit is 20:1, the same as for USD/MXN or EUR/NOK; EUR/GBP, being made of two listed currencies, is 30:1. The major indices include the S&P 500, Nasdaq 100, Dow Jones, DAX, FTSE 100 and Nikkei 225.

The same rules include two protections: margin close-out, which requires the broker to close positions when your equity falls to 50% of the margin required for them, and negative balance protection, which limits a retail client's total losses to the money in the account.

Elsewhere the limits differ. In the United States, retail forex leverage is capped at 50:1 on major pairs and 20:1 on others. Australia's ASIC applies limits similar to ESMA's. Clients classed as professional, and clients of brokers' offshore entities, are often offered 100:1 to 500:1 or more, usually with fewer of the protections above. Higher available leverage is a feature of the regulatory regime, not of the product.

In the EU and UK, a retail client can ask to be treated as an elective professional only by meeting at least two of three tests: trading in significant size at an average of ten transactions a quarter over the previous four quarters, holding a financial portfolio of more than €500,000 including cash, or having worked in the financial sector for at least a year in a role that requires knowledge of the products. Opting up removes the retail protections: the leverage caps, the margin close-out rule and the regulatory requirement for negative balance protection, although some brokers still offer the last voluntarily.

The leverage your broker offers is a maximum. What determines how much a market move affects your account is effective leverage:

A $10,000 account holding 0.50 lots of EUR/USD at 1.1000 has $55,000 of exposure: effective leverage of 5.5:1. A 1% move in EUR/USD, 110 pips, changes equity by 5.5%, or $550. The account leverage setting, whether 30:1 or 500:1, plays no part in that number.

EUR/USD's daily moves are usually well under 1%, but not always, and some instruments jump. On 15 January 2015, when the Swiss National Bank abandoned its EUR/CHF floor, the pair fell from 1.20 to a low of around 0.85 within minutes, roughly 29%, and many stops were filled far from their prices. At 10:1 effective leverage, a move of that size erases the account almost three times over.

Not directly, and that is the source of a lot of confusion. Take a $10,000 account that risks 1% with a 20-pip stop on EUR/USD: the lot size is 0.50 whatever the leverage. At 30:1 that position ties up $1,833.33 of margin; at 500:1, $110. The loss at the stop is $100 in both cases.

What higher leverage does is remove a brake. At 30:1 the same $10,000 can open at most about 2.72 lots of EUR/USD; at 500:1, over 45 lots. A 50-pip move against 2.72 lots costs $1,360, or 13.6% of the account; against 45 lots it would cost more than twice the account. The danger is not the setting itself but the position sizes it allows when sizing is not driven by risk.

While positions are open, your platform tracks four numbers:

• Equity = balance + open profit or loss.
• Used margin = the total margin held for open positions.
• Free margin = equity − used margin: what is available for new positions or to absorb losses.
• Margin level = equity ÷ used margin × 100%.

Brokers set two thresholds on the margin level. At the margin call level, commonly 100%, you can't open new positions and may receive a warning. At the stop-out level, 50% for EU and UK retail clients and often lower elsewhere, the broker starts closing positions, usually the one with the largest loss first, until the margin level recovers.

Worked example: how far can the price move?

A $5,000 account opens 1 lot of EUR/USD at 1.1000 (pip value $10). Margin call at 100%, stop-out at 50%. For simplicity this ignores the small change in margin as the price moves.

Higher leverage lets the position survive a bigger move before it is stopped out, and lose much more of the account before it is. At 100:1 the stop-out arrives after 89% of the account has gone. Neither a margin call nor a stop-out is a risk-management tool; a stop-loss sized to your risk should be hit long before either.

The formula is the same; what changes is the contract size, the price level and the leverage cap. Contract sizes vary more between brokers outside forex, so check your platform's specification:

• Gold: 100 oz per lot. At $4,000 an ounce one lot is $400,000 of exposure and needs $20,000 of margin at the 20:1 retail cap, far more than many traders expect. 0.10 lots needs $2,000, and the minimum 0.01 lots (1 oz) needs $200.
• Indices: notional = lots × value per point × index level. NAS100 at 24,500 with $1 per point is $24,500 per lot, or $1,225 of margin at 20:1.
• Oil: commonly 1,000 barrels per lot (some brokers use 100). At $62 a barrel that is $62,000 per lot, or $6,200 of margin at 10:1.
• Crypto: usually one coin per lot. At the 2:1 retail cap, half the position value is held as margin: 0.1 BTC at $80,000 needs $4,000.

Margin and effective leverage add up across positions, and so does exposure to a common theme. Take a $10,000 USD account at 30:1 holding three half-lot positions:

The margin level is $10,000 ÷ $5,583.33 = 179%, and effective leverage is $167,500 ÷ $10,000 = 16.75:1. All three positions are bets against the US dollar, so a 1% dollar rally against all three currencies costs about $1,675, or 16.75% of the account, even though no single position looks large. Effective leverage is most useful when it is measured across everything you hold.

Hedged positions are a special case. Many brokers charge margin on only one side of a hedged pair (long and short the same instrument) or reduce it, but the rules vary, and holding both sides still costs two spreads and two sets of swap.

Margin requirements are not fixed. Brokers often raise them before weekends, around elections and central-bank decisions, on holidays when markets are thin, and after volatility spikes. Retail caps are maximums; a broker may always ask for more.

A higher requirement can push an account towards a stop-out without the price moving at all. In the earlier example, a $5,000 account with 1 lot of EUR/USD at 30:1 uses $3,666.67 of margin, a margin level of 136%. If the broker temporarily doubles the requirement to the equivalent of 15:1, used margin becomes $7,333.33 and the margin level drops to 68%, below a 100% margin-call level and only 18 percentage points above a 50% stop-out. A modest adverse move on top could then close the position.

Brokers usually announce such changes in advance by email or on their website, and the platform shows the requirement that applies now. If you hold positions over a weekend or through scheduled events, check the announcements and keep enough free margin to absorb a higher requirement.

1. Size every position from your risk and stop distance first, using the lot size formula.
2. Then check the margin. If a single trade would use most of your free margin, it is too big for the account or its stop is too tight to be realistic.
3. Watch total effective leverage across all positions, not each trade on its own.
4. Keep the margin level well above your broker's margin-call level, so that ordinary losses and widening spreads don't push you towards a stop-out.
5. Know your protections: whether you have negative balance protection, what the stop-out level is, and whether the broker raises margin requirements before weekends or major events (many do).

• "Higher leverage means bigger profits." Only if you also trade bigger positions, which means bigger losses at the same stop.
• "Margin is a fee." Margin is set aside, not spent, and it is released when the position closes. The costs of trading are the spread, commission and swap.
• "The most I can lose is the margin." Profit and loss are on the full position value and can exceed the margin many times over. Negative balance protection, where it applies, caps losses at the account balance, not at the margin.
• "A margin call will protect me." It protects the broker against your account going negative, and it is triggered after most of the damage is done.
• "1:1 effective leverage means no risk." It means no leverage. The position can still lose as much as the instrument falls.