A Contract for Difference (CFD) is a derivative financial instrument that allows traders to speculate on the price movement of an underlying asset without owning that asset. Instead of buying shares, commodities, or currencies outright, the trader and the broker agree to exchange the difference between the opening and closing price of a contract. This guide explains what CFDs are, how they work, the costs involved, and the regulatory reality across major markets. It is intended for retail investors, professional traders, and anyone evaluating whether CFD trading aligns with their risk tolerance and financial goals.
What Is a Contract for Difference?
A Contract for Difference is a bilateral agreement between a trader and a CFD broker. At the close of the contract, the parties exchange the difference between the contract's opening price and its closing price. If the price moves in the trader's favour, the broker pays the trader the difference. If it moves against the trader, the trader pays the broker. CFDs are traded over-the-counter (OTC), meaning they are not listed on a central exchange like the London Stock Exchange or the New York Stock Exchange. Instead, brokers set their own prices, though they typically derive them from the underlying market.
CFDs were first developed in the early 1990s in London, initially used by institutional investors to hedge equity exposure. Retail access expanded significantly in the early 2000s with the rise of online platforms such as IG Group (founded 1974, began offering CFDs in 2000), CMC Markets (founded 1989), and Plus500 (founded 2008). By 2024, the global CFD market was estimated to be worth over $3 trillion in notional trading volume annually, with the majority of retail activity concentrated in the UK, Europe, Australia, and parts of Asia.
How CFDs Work: Leverage, Margin, and Position Sizing
Leverage
The defining feature of CFDs is leverage. A trader deposits only a fraction of the total trade value, known as margin, to open a position. For example, if a broker offers 10:1 leverage on a stock CFD, a trader can control $10,000 worth of shares with a $1,000 deposit. Leverage magnifies both profits and losses. A 1% move in the underlying asset results in a 10% change in the trader's equity (assuming no other costs).
Margin Requirements
Margin is expressed as a percentage of the notional position size. Under European Securities and Markets Authority (ESMA) rules, which came into effect in 2018, retail clients face the following minimum margin requirements for CFDs:
- Major currency pairs: 3.33% margin (30:1 leverage)
- Minor currency pairs, gold, and major indices: 5% margin (20:1 leverage)
- Equities and other commodities: 10% margin (10:1 leverage)
- Cryptocurrencies: 20% margin (5:1 leverage), though some brokers apply higher rates
These limits apply to retail clients in the European Economic Area and the UK. Professional clients can access higher leverage if they meet certain criteria (portfolio size > €500,000, relevant experience, and frequency of trading).
Going Long and Going Short
CFDs allow traders to profit from both rising and falling markets. A long position is opened when the trader expects the price to rise. A short position is opened when the trader expects the price to fall. If the market moves against the position, the trader incurs a loss equal to the difference multiplied by the number of contracts. Because of leverage, losses can exceed the initial deposit, a phenomenon known as negative balance risk. In many jurisdictions, brokers are required to offer negative balance protection for retail clients, meaning the trader cannot lose more than their deposited funds.
Costs of Trading CFDs
Trading CFDs involves several costs that can significantly affect profitability, especially for frequent traders.
Spread
The spread is the difference between the bid (sell) price and the ask (buy) price. Brokers earn revenue from this spread. For major forex pairs like EUR/USD, the spread might be as low as 0.6 pips on a raw spread account (plus commission). For less liquid assets like small-cap stocks or exotic currency pairs, spreads can be several pips wide. A trader who opens and closes a position immediately will incur a loss equal to the spread.
Commission
Some brokers charge a commission on CFD trades, particularly on share CFDs and exchange-traded funds (ETFs). For example, CMC Markets charges a commission of 0.10% per side on UK share CFDs (minimum £9). Plus500 does not charge commission but makes its revenue from wider spreads. The choice between commission-based and spread-based pricing depends on the trader's style and frequency.
Overnight Financing (Swap) Charges
CFD positions held open past the daily cut-off time (usually 22:00 GMT) incur an overnight financing charge. This charge reflects the cost of borrowing the underlying asset or the interest foregone on the margin deposit. The rate is typically based on a benchmark (e.g., SONIA for GBP, SOFR for USD, EURIBOR for EUR) plus a broker markup of 2.5-3% per year. For short positions, the trader may receive a credit if the underlying currency has a positive interest rate, but this is often reduced by the broker's markup. Overnight charges can accumulate quickly, making CFDs unsuitable for long-term holding unless the trader is prepared for significant carrying costs.
Guaranteed Stop-Loss Orders (GSLOs)
Some brokers offer guaranteed stop-loss orders for an additional premium, typically 0.1-0.3% of the position size. This ensures the position closes at a specified price even if the market gaps. Without a GSLO, a stop-loss order may be filled at a worse price during volatile periods.
Regulatory Reality: Key Jurisdictions
The regulatory landscape for CFDs varies widely. Some countries have banned them for retail investors entirely, while others impose strict leverage limits and disclosure requirements.
United Kingdom (FCA)
The Financial Conduct Authority (FCA) has regulated CFDs since 2018 under rules that mirror ESMA's. In 2020, the FCA banned the sale of CFD options and introduced a ban on crypto-derivatives for retail clients. FCA-regulated brokers must provide negative balance protection, publish client profitability statistics (which typically show 70-80% of retail clients lose money), and cannot offer incentives to open accounts. The FCA also requires brokers to assess a client's knowledge and experience before approving them for CFD trading.
European Union (ESMA)
ESMA's 2018 measures are permanent across member states. In addition to leverage limits, ESMA mandates standardized risk warnings on all marketing materials, a mandatory initial margin close-out rule (margin must be at least 50% of the initial margin requirement before positions are automatically closed), and a ban on binary options for retail clients.
Australia (ASIC)
The Australian Securities and Investments Commission (ASIC) introduced similar restrictions in 2021. Retail leverage is capped at 30:1 for forex, 20:1 for indices, 10:1 for commodities and equities, and 2:1 for cryptocurrencies. ASIC also banned the offering of binary options to retail clients. Australian brokers must belong to an external dispute resolution scheme (e.g., Australian Financial Complaints Authority) and hold an Australian Financial Services Licence.
United States (CFTC and SEC)
CFDs are effectively banned for retail traders in the United States. The Commodity Futures Trading Commission (CFTC) and the Securities and Exchange Commission (SEC) classify CFDs as off-exchange foreign currency contracts or swaps, which cannot be offered to retail investors unless traded on a registered exchange. No major US broker offers CFDs to domestic clients. However, US residents can trade futures contracts on exchanges like the Chicago Mercantile Exchange (CME), which are standardized and centrally cleared.
Other Jurisdictions
- Canada: CFDs are allowed but regulated by provincial securities commissions. Leverage is typically capped at 50:1 for forex and 20:1 for indices.
- Singapore (MAS): The Monetary Authority of Singapore restricts leverage to 20:1 for retail clients and requires brokers to implement risk warnings.
- Hong Kong (SFC): The Securities and Futures Commission allows CFDs but requires brokers to be licensed and comply with leverage limits (typically 5:1 for retail clients).
- Israel (ISA): In 2019, the Israel Securities Authority banned the offering of CFDs to retail clients entirely.
- Belgium (FSMA): The Financial Services and Markets Authority banned the marketing and distribution of CFDs to retail investors in 2016.
Risks and Realities for Retail Traders
CFD trading carries significant risks. According to FCA data from 2023, 74% of retail CFD accounts at FCA-regulated firms lost money on average. The average loss per losing client was £2,200 per year. Only 26% of accounts were profitable, with an average gain of £1,800. These statistics underscore the difficulty of consistently profiting from leveraged derivatives.
Key risks include:
- Leverage risk: Small adverse price movements can wipe out the entire account.
- Gap risk: Prices can jump over stop-losses during news events or weekends.
- Counterparty risk: If the broker becomes insolvent, the trader may lose funds. In the UK, client money is held in segregated accounts, but this does not guarantee full recovery if the broker fails.
- Overnight risk: Positions held over multiple days incur financing costs that can erode profits.
For those considering CFDs, it is essential to understand the specific rules of the broker and jurisdiction. Many brokers offer demo accounts that allow traders to practice without risking real money. The CFD trading strategies guide on this site covers common approaches such as trend following, range trading, and news-based trading. For a deeper understanding of how leverage works, see leverage and margin in CFDs.
Choosing a Broker
Selecting a CFD broker requires careful evaluation of regulation, costs, platform features, and asset coverage. All reputable brokers are regulated by at least one top-tier authority (FCA, ASIC, CySEC, or equivalent). Traders should verify the broker's licence number on the regulator's website. For example, a broker claiming FCA regulation must have a Firm Reference Number (FRN) listed on the FCA Register.
Key factors to compare:
- Regulation: Check which regulator oversees the broker and whether negative balance protection is offered.
- Costs: Compare spreads, commissions, and overnight financing rates. A broker with a low spread but high swap rate may be more expensive for longer-term trades.
- Platform: MetaTrader 4 and 5 are widely used, but some brokers offer proprietary platforms with advanced charting and automated trading.
- Asset range: Some brokers offer over 10,000 instruments, including forex, indices, commodities, shares, ETFs, and cryptocurrencies.
- Customer support: Look for 24/5 or 24/7 support with local language options.
For a detailed comparison of features, read our best CFD brokers 2025 article. Also, consult the CFD account types guide to understand the differences between standard, raw spread, and Islamic accounts.
Conclusion
Contracts for Difference are versatile instruments that enable leveraged speculation on a wide range of markets. They offer the ability to go long or short with a small initial outlay, but carry substantial risks, including the potential to lose more than the deposit. Regulatory protections vary by jurisdiction, with the US, Belgium, and Israel imposing outright bans on retail CFD trading, while the UK, EU, and Australia restrict leverage and mandate risk disclosures. Before trading, retail investors should thoroughly educate themselves, use demo accounts, and consider the high probability of loss. For a foundational overview, start with the CFD trading for beginners guide.
Related articles
- CFD Trading for Beginners: A Step-by-Step Introduction
- Leverage and Margin in CFDs: How They Amplify Both Gains and Losses
- CFD Trading Strategies: Trend Following, Range Trading, and News Trading
- Best CFD Brokers 2025: A Comparative Review of Regulation, Costs, and Platforms
- CFD Account Types: Standard, Raw Spread, Islamic, and Demo Explained