Why Leverage Caps Change Who Survives a Margin Call

Imagine two traders place the same trade on the same day. One is in London, the other is registered with a broker in a lighter-touch offshore jurisdiction. Same currency pair, same direction, same timing. Yet one gets a phone notification and a closed position; the other stays in, and the outcome — good or bad — is dramatically different. Nothing about their market view differed. The rules did.

This is the leverage paradox at the heart of retail trading in contracts for difference, or CFDs. A CFD is a contract that pays the difference in price of an underlying asset — a currency pair, an index, gold, a share, a cryptocurrency — without anyone owning the actual asset. They are, in the words of the UK’s Financial Conduct Authority, “complex, leveraged derivatives,” typically sold through online trading platforms. Leverage is the engine inside them. And how much leverage you are allowed, and what happens when a position turns against you, is not a market fact. It is a regulatory one.

Leverage, in plain terms

Leverage lets you control a larger position than your deposit would otherwise buy. At 30:1, for example, a modest deposit controls a position thirty times its size. The benefit is obvious: a small move in your favour produces a proportionally large gain. The cost is equally obvious and far less advertised: a small move against you produces a proportionally large loss. Leverage does not create risk. It multiplies whatever risk was already there.

Margin is the collateral that keeps that position open — the money set aside against potential losses. Margin requirements move inversely to leverage: the higher the leverage, the thinner the buffer. That is precisely why regulators treat leverage limits as consumer protection rather than market meddling.

The European template

In 2018, the European Securities and Markets Authority, or ESMA, introduced temporary product intervention measures on CFDs sold to retail investors, applying from 1 August 2018. They were later renewed for a further three months from 1 November 2018. The package had five parts, and each one matters to how a margin call unfolds.

First, leverage caps on opening a position, scaled to the volatility of the underlying asset: 30:1 for major currency pairs; 20:1 for non-major currency pairs, gold and major indices; 10:1 for other commodities and non-major equity indices; 5:1 for individual equities and other reference values; and 2:1 for cryptocurrencies.

Second, a margin close-out rule applied per account. This standardises the level at which a provider must close out a retail client’s open CFDs — at 50% of the minimum required margin. Third, negative balance protection on a per-account basis, providing a guaranteed limit on retail client losses. Fourth, a restriction on incentives offered to trade CFDs. Fifth, a standardised risk warning that includes the percentage of losses on that provider’s retail investor accounts.

Steven Maijoor, then ESMA Chair, described the measures as ensuring that investors cannot lose more money than they put in, restricting the use of leverage and incentives, and providing understandable risk warnings.

Why the close-out rule is the quiet star

Leverage caps get the headlines, but the margin close-out rule is where most retail outcomes are actually decided. A margin call is the broker’s request for more funds; a close-out is the broker stepping in and closing positions when your account equity falls to the specified threshold. Under the ESMA framework, that threshold is standardised at 50% of minimum required margin, applied across the account rather than position by position.

Standardising matters more than it sounds. If every provider uses the same trigger, a trader cannot shop around for the most forgiving close-out discipline. The rule also removes the incentive for a firm to let a losing position run in the hope of recovery — a hope that, statistically, is not kind. ESMA’s product intervention analysis found that 74% to 89% of retail CFD accounts lose money, with average client losses of between EUR 1,600 and EUR 29,000 across national studies. Those disclosed loss percentages are among the most reliable retail outcome data in the industry, precisely because regulators compel and standardise them.

The UK makes it permanent

ESMA’s measures were temporary by design, renewable in three-month blocks. The FCA consulted on making them permanent and did so. Its policy statement PS19/18 finalised rules restricting how CFDs and CFD-like options are sold, marketed and distributed to retail consumers, applying from 1 August 2019 for CFDs and 1 September 2019 for CFD-like options. The FCA estimated retail consumers would save between £267 million and £451 million per year.

The UK regime mirrors the European template: leverage between 30:1 and 2:1 depending on underlying volatility; close-out when funds fall to 50% of the margin needed to maintain open positions; protection guaranteeing a client cannot lose more than the total funds in their trading account; a stop on cash or other inducements; and a standardised risk warning. The FCA also extended the rules to “CFD-like options” — closely substitutable products — so firms could not sidestep the measures by repackaging the same risk under a different label.

Its supervisory priorities are instructive. The FCA flagged inappropriately opting clients up to elective professional status, moving clients to associated non-UK entities, and weak compliance with financial promotion requirements, including the prominence of risk warnings.

The same product, different rules

Step outside the European and UK perimeter and the picture fragments. In the United States, retail investors are prohibited from trading CFDs at all; equivalent exposure is available only through regulated futures and options. The National Futures Association caps retail forex leverage at 50:1 on major currency pairs and 20:1 on minor pairs. Australia’s ASIC introduced comparable limits in 2021 — 30:1 for major currency pairs down to 2:1 for crypto — with margin close-out rules and incentive restrictions. Singapore’s MAS takes a different route, requiring brokers to assess clients’ knowledge and experience before offering higher leverage rather than imposing a flat cap. South Africa’s FSCA has not implemented strict leverage limits, though brokers must be licensed and follow fair trading practices.

The practical consequence is that a trader can often choose their rulebook by choosing their entity — a point ESMA and the FCA both anticipated, which is why the FCA scrutinised client migration to associated non-UK entities. Higher leverage offshore is not free. It typically arrives with thinner protections, and professional classification can strip away safeguards such as negative balance protection.

Three habits worth keeping

First, read the close-out threshold, not just the headline leverage ratio. The ratio tells you how big a position you can open; the threshold tells you when it will be taken away from you.

Second, check whether negative balance protection applies to your account and your jurisdiction. It is not universal, and where it is absent, losses can exceed the deposit. That is a structural difference, not a small print detail.

Third, treat the risk warning percentage as data rather than decoration. A firm publishing that a majority of its retail accounts lose money is telling you something about the base rate. It says nothing about your particular trade, and it is not a prediction — just an honest average.

None of this tells you whether to trade CFDs, or with which leverage. That depends on circumstances no article can see. What the rules do tell you is that leverage is not a neutral dial. The same trade, executed under two different rulebooks, can produce two very different outcomes — and the gap between them is written in regulation, not in price. Sometimes the most important number on a trading platform is the one nobody advertises.