What Is a CFD? Contracts for Difference Explained
A CFD, or contract for difference, is a leveraged agreement between you and a broker to exchange the difference in an asset's price between opening and closing a trade. You never own the underlying asset. CFDs are complex instruments with a high risk of losing money rapidly due to leverage.
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How CFDs work: leverage, margin, long and short
When you open a CFD, you agree to settle the price difference of an asset such as a share, index, commodity or currency pair. You put down a small deposit called margin, and the broker effectively lends you the rest, which is leverage. If you expect the price to rise you go long; if you expect it to fall you go short and can profit from falling markets. Leverage magnifies both gains and losses relative to your deposit, so a small adverse move can wipe out your margin quickly. Because you never take ownership, you get no shareholder rights and no physical delivery. The majority of retail investor accounts lose money when trading CFDs. Capital at risk.
The costs of trading CFDs
CFDs carry several layers of cost that can erode returns. The spread is the gap between the buy and sell price and is paid on every trade. If you hold a leveraged position past the daily cut-off, you pay overnight funding, also called a holding or swap charge, which reflects the cost of the borrowed exposure and accumulates the longer you stay in. Trading an asset priced in a foreign currency can trigger a currency conversion fee. Some brokers add commission on share CFDs, inactivity fees or guaranteed stop charges. Because overnight funding compounds, CFDs are generally expensive for long-term holding and are structured for shorter-term trading. Always read the full cost schedule before opening a position.
CFDs versus owning real shares
Owning real shares means you buy and hold the asset outright, receive full dividends, gain voting rights and can keep the shares indefinitely with no daily funding cost. A CFD only tracks the price, so you never own anything, have no voting rights and receive a dividend adjustment rather than a real dividend. Leverage lets you gain exposure with less upfront capital, but it amplifies losses and adds overnight funding that makes long holding costly. Real share ownership can be held tax-efficiently in a UK ISA; CFD profits fall outside that wrapper and may be taxable. In short, CFDs suit short-term speculation on price movements, while buying shares suits long-term investing and wealth building. Capital at risk.
Who CFDs suit and who they do not
CFDs may suit experienced, active traders who understand leverage, monitor positions closely, want to go short or hedge, and can absorb rapid losses. They rely on discipline, risk limits and constant attention to margin levels. CFDs are poorly suited to beginners, long-term investors, or anyone who cannot afford to lose the money at stake, because leverage can turn a modest market move into a total loss of the deposit. If your goal is to build a retirement pot or hold a diversified portfolio for years, a stocks and shares ISA or general investment account holding real assets is usually more appropriate. The industry-wide reality is that most retail CFD accounts lose money, so treat these products with caution.
UK and EU regulatory context
In the UK the Financial Conduct Authority and in the EU the European Securities and Markets Authority impose protections on retail CFD trading. Leverage is capped by asset class, typically around 30 to 1 on major currency pairs and lower for indices, commodities, shares and cryptoassets, which limits how much exposure a small deposit can command. Retail clients also benefit from negative balance protection, meaning you cannot lose more than the funds in your account even if the market gaps sharply against you. Brokers must display standardised risk warnings, including the percentage of their retail accounts that lose money, and must apply margin-close-out rules that close positions when your margin falls too low. These rules exist because CFDs are high risk.
The bottom line
A CFD is a leveraged bet on price movement, not an investment in an asset you own, and it carries a high risk of rapid loss. Most retail accounts lose money, so CFDs suit only experienced, active traders who fully understand leverage. Capital at risk.
Frequently Asked Questions
Are CFDs a good idea for beginners?
Generally no. CFDs are complex, leveraged products where the majority of retail accounts lose money. Beginners are usually better served by owning real shares or funds in a tax-efficient wrapper, where losses are limited to what you invest and there is no daily funding cost.
Can I lose more than I deposit with a CFD?
Under UK and EU rules, retail clients have negative balance protection, so you cannot lose more than the money in your account. Professional clients may not have this safeguard. Even so, you can still lose your entire deposit very quickly because of leverage. Capital at risk.
Do I own the shares when I trade a share CFD?
No. A CFD only tracks the price of the underlying share. You never own the shares, so you get no voting rights and no real dividend, only a cash dividend adjustment. You settle the difference in price between opening and closing the contract.
Why do CFDs cost more to hold long term?
Leveraged CFD positions incur overnight funding every day you hold them, reflecting the cost of the borrowed exposure. This charge compounds over time, so a position held for months can accumulate significant funding costs, making CFDs unsuitable for long-term investing compared with owning assets outright.