Individual Equity CFDs: Leveraged Exposure to Single Shares

Risk Warning: CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. The majority of retail CFD accounts lose money. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money. Capital is at risk, and outside retail protections losses can exceed deposits.

A contract for difference on an individual share — a share CFD — is an agreement with a broker that settles, in cash, the difference between the price at which you opened a position in one company's stock and the price at which you closed it. At no point do you own the share. There is no entry on the register, no voting right, no legal claim on the company. The contract gives you the price movement, magnified by leverage, and nothing else.

That combination — a single company's volatility, multiplied by borrowed exposure — makes share CFDs one of the most demanding products a retail investor can hold. It is why regulators on both sides of the Channel confine them to the tightest mainstream margin tier, and why every provider's marketing must carry a warning stating how many of its own clients lose money. This guide covers what is specific to single-share contracts; the general architecture of the product is explained in our guide to how CFD trading works, and the full range of CFD markets is set out on the CFD trading page.

This guide is for educational purposes only and does not constitute financial advice or a personal recommendation. Leveraged products carry a high risk of capital loss, their value can fall as well as rise, and past performance is not a reliable indicator of future results.

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What the Regulators' Own Data Shows

Before any discussion of mechanics, the base rates deserve to come first, because they are unusually well documented.

When ESMA announced its EU-wide product intervention in March 2018, it justified the restrictions by pointing to studies from national regulators finding that 74% to 89% of retail accounts typically lose money on these products, with average losses per client ranging from €1,600 to €29,000. Those are the figures that persuaded regulators across the EU — and subsequently the FCA, which made near-identical restrictions permanent in the UK from August 2019 — that CFDs required intervention rather than mere disclosure.

The disclosure obligation survived anyway, in a usefully specific form. An FCA-regulated provider must present a prescribed risk warning stating the percentage of its own retail investor accounts that lost money trading CFDs over the previous 12 months. The number is provider-specific and updated, which makes it one of the few pieces of marketing text worth reading closely: it tells you, before you deposit anything, what happened to the accounts of people who did.

Nothing in that statistic is an argument that no one should ever touch the product. It is an argument that the product's defaults work against the holder, and that anyone using it needs to understand exactly which mechanisms produce those outcomes. The rest of this guide walks through them.

The 20% Margin Floor on Shares

The FCA's rules set minimum margin by asset class, scaled to volatility. A firm must require a retail client to post at least 3.33% of the exposure on a major currency pair, 5% on a major stock index or gold, 10% on a minor index or other commodity, 50% on a cryptocurrency — and 20% when the underlying asset is a share. ESMA's EU framework applies the same 5:1 ceiling to individual equities.

Shares therefore sit at the most restricted mainstream tier, below every index and commodity class. The logic is not obscure. An index dilutes any single company's news across dozens or hundreds of constituents; a single share absorbs its earnings surprises, profit warnings, litigation and takeover rumours at full strength. The permitted borrowing is smaller because the underlying moves harder.

It is worth being clear about what a 5:1 cap does and does not do. It limits how much exposure a given deposit can control; it does not limit how much of that deposit a normal week in one stock can consume.

An Illustration of the Arithmetic

The following uses deliberately round numbers and is an illustration of the margin mechanics only — not a projection, and not a representation of any expected result.

Suppose a trader opens a long CFD equivalent to 300 shares of a company priced at £20 — exposure of £6,000. At the 20% minimum margin, the deposit required is £1,200.

A 10% rise in the share, to £22, produces a gain of £600: half the margin posted, from a tenth of a move in the underlying. A 10% fall produces the mirror image — £600 lost, half the deposit gone. At a 20% fall, the loss equals the entire initial margin. Every one of these outcomes flows from a price move that a long-term shareholder in the same company would experience as an ordinary, if unpleasant, repricing.

Leverage does not change what the share does. It changes what the share's behaviour does to you.

The Close-Out Rule Removes the Option of Waiting

Owning a share outright carries one quiet privilege: nobody can make you sell. A share CFD removes it.

Under the FCA's margin close-out rule, a firm must not let a retail client's net equity — deposited margin plus running profit and loss — fall below 50% of the margin required to maintain the open positions. Once it does, the firm must close positions as soon as market conditions allow. The rule standardises what brokers previously did at varying thresholds, and it is a floor: firms may close accounts out earlier than 50%, and their terms set out exactly when.

Two features of this mechanism bite hardest in single names.

Closure happens at the market's price, not yours. "As soon as market conditions allow" means the prevailing bid in whatever market exists at that moment. In a fast or thin market, that price can sit well below the level that breached the threshold — the difference is slippage, and it is borne by the client.

Single shares gap. Company news arrives disproportionately outside market hours — results, profit warnings, bids. A share that closes at £20 can open at £16 with no trading in between. A stop-loss set at £19 executes at or near £16, not £19, because a stop order becomes a market order at the first available price once triggered. Guaranteed stops, where offered, transfer that gap risk to the broker for a fee. Ordinary stops merely cap how long you watch the loss develop.

The combined effect is structural: the moments at which a share CFD position is forcibly crystallised are precisely the moments of maximum stress in the underlying stock. The product sells at the lows on your behalf.

Negative Balance Protection — and Where It Stops

The FCA requires firms to provide protections that guarantee a retail client cannot lose more than the total funds in their CFD account; ESMA's measures impose negative balance protection on a per-account basis in the EU. For a retail client of a properly regulated broker, the account floor is zero.

Three boundaries around that protection matter.

First, it protects the account, not the position. A single overnight gap in one stock can absorb not only that trade's margin but every other pound in the account before the floor engages.

Second, it is a retail protection. Clients may ask to be reclassified as elective professionals; under COBS 3.5.3 the quantitative test requires at least two of the following — around ten significantly sized transactions per quarter over the previous four quarters, a financial instrument portfolio (including cash deposits) exceeding €500,000, or at least a year's professional work in a relevant financial-sector role. Reclassification buys higher leverage at the cost of the retail protections, negative balance protection among them. For a professional client, losses can exceed everything deposited.

Third, it is a protection of regulated firms. Brokers licensed only in light-touch offshore centres may offer no equivalent, alongside weaker client-money arrangements. By contrast, if an FCA-authorised investment firm fails, the Financial Services Compensation Scheme covers eligible claims up to £85,000 per person per firm for failures after 1 April 2019. Which regulator stands behind the broker is not an administrative detail; it decides what happens in the worst case.

What a Share CFD Position Costs

Share CFDs carry the heaviest cost stack in the CFD universe, and each layer deserves separate attention.

The spread is paid on every round trip. On heavily traded large-caps it is modest; on mid- and small-caps it widens, and it widens further exactly when volatility rises.

Commission is commonly charged on equity CFDs specifically, where index and FX contracts are typically spread-only. Hedging a single-name exposure is more expensive for the broker than hedging an index, and the client pays for the difference.

Overnight financing is the cost that reshapes the product's economics over time. Holding a leveraged position past the close incurs a daily charge, conventionally built from a benchmark rate plus the broker's own margin, applied to the full exposure — in the illustration above, financing accrues on £6,000, not on the £1,200 deposited. Day-traded positions never pay it; positions held for months pay it every night. This single mechanism is why a CFD is a tool for expressing short-horizon views and a poor substitute for owning shares over years.

Dividend adjustments are the subtlest line. A long CFD held over the ex-dividend date is credited a cash adjustment reflecting the dividend; a short position is debited it. HMRC's guidance treats dividend and interest payments within a CFD as entries in the capital gains computation rather than investment income — an adjustment is not a dividend, for tax or for anything else. No voting rights, scrip alternatives or shareholder entitlements accompany it.

UK Tax Treatment

The tax position follows directly from the absence of ownership, and every element below is grounded in HMRC and government guidance current at the time of writing.

• No Stamp Duty Reserve Tax. Buying UK shares electronically normally attracts SDRT at 0.5% of the transaction. A CFD acquires no shares, so the charge never arises.
• Capital gains treatment. HMRC's Capital Gains Manual treats retail contracts for difference as financial futures whose outcomes are charged under the capital gains regime by TCGA92/S143 — unless the profits are taxable as trading income, which HMRC applies to genuinely business-like trading operations rather than to typical retail activity. For disposals from 6 April 2026, gains falling within the basic-rate band are taxed at 18% and gains above it at 24%, with an annual exempt amount of £3,000 for 2026/27. Allowable losses can be set against other chargeable gains, which is the one respect in which the CFD wrapper can be more useful than its tax-free cousin.
• The spread betting contrast. Spread bet winnings are generally outside the tax net for UK residents unless, in HMRC's words, they "arise from the carrying on of a trade" — but by the same token spread betting losses deliver no relief. The full comparison, including when each wrapper's treatment is worth more, is drawn in our spread betting versus CFDs guide.
• No wrapper shelter. CFDs cannot be held in an ISA or a SIPP; they sit outside the UK's tax-advantaged wrappers entirely.
• Non-UK residents. Treatment depends on residence at the time of trading, not on where the broker sits. The cross-border questions — residence, reporting, jurisdiction of the platform — are covered in our guide to CFD trading for international investors.

Tax rules change, and individual circumstances differ; none of the above is tax advice.

The Two Uses That Withstand Scrutiny

Strip away leverage-as-marketing and two applications of share CFDs remain coherent.

Expressing a short view on one company. A short CFD profits when the share falls, without the borrow arrangements conventional short selling requires. The discipline, and its considerable dangers — unlimited theoretical loss on a rising share among them — are the subject of our short-selling guide.

Hedging a concentrated holding. An investor locked into a large single-stock position — vested employee shares, a founder's post-float stake, an inherited holding awaiting reorganisation — can short a CFD on the same name to neutralise part of the exposure through a defined period of risk, without selling shares and triggering a disposal for CGT. The hedge has a running cost (financing, spread, dividend debits) that must be weighed against the protection bought, and sizing it is a judgement, not a formula. Why concentration itself is the underlying problem is examined in our guide to concentrated equity risk.

Both uses share a property: they are defined, bounded and temporary. That is the shape of CFD use that survives contact with the cost structure.

Who Share CFDs Do Not Suit

The clearest way to close is negative. Individual equity CFDs are a poor fit for:

• Anyone building long-term wealth in equities. Daily financing on the full exposure converts time — the long-term investor's principal asset — into a running cost. Ownership through funds or direct holdings does the same job without the meter running; our ETF selection guide covers that route.
• Income seekers. Dividend adjustments mimic the cash flow but carry neither the rights nor the character of dividends.
• Anyone whose finances cannot absorb a margin call. The close-out mechanism demands cash at short notice or crystallises the loss. If meeting that demand would mean borrowing or selling other assets under pressure, the product is mis-sized for the balance sheet behind it.
• Anyone for whom the account balance is not genuinely risk capital. The regulator-documented loss rates quoted above describe what typically happens; the FCA's account-level protection limits the damage to the account, and no rule limits it below that.
• Investors relying on ISA or pension tax shelter, which is unavailable for CFDs.

Who is left? Broadly: experienced, adequately capitalised investors running short-horizon directional positions or specific hedges, in sizes they can lose, with the discipline to treat every open position as margined and every night held as a cost. That population is real, but it is small — the published loss disclosures exist because so many buyers are not in it.

Setting Up an Account, Properly

If share CFDs have a legitimate place in your strategy — most plausibly as a hedge on a concentrated position or a strictly limited trading allocation — the order of decisions matters: regulatory home of the broker first, client classification second, platform and cost structure third. The considerations for internationally mobile investors, from tier-1 regulation to multi-currency accounts and reporting quality, are set out in our guide to setting up a trading account abroad.

Our investment team can walk through the account-setup considerations with you — including whether the retail protections described above apply in your circumstances and jurisdiction. Start with the account-setup enquiry form on our trading accounts page.

Capital is at risk. CFDs are not suitable for all investors, and nothing on this page recommends any trade or predicts any outcome.