Tax-Free Is Not Cost-Free: What Spread Bettors Actually Pay in the UK
Spread betting has become a popular way for UK residents to take a view on financial markets without paying capital gains tax or stamp duty on profits. What often gets less attention is that the tax wrapper does not mean you trade for free, and understanding where the costs sit can make a big difference to your bottom line.
What Is a Financial Spread Bet?
A financial spread bet is simply a bet on which way the price of a market will move. You stake an amount per point of movement, and you never own the underlying asset. If the market moves in your favour, your profit rises with every point; if it moves against you, your loss does the same. Because you do not take ownership of shares, currencies or commodities, the activity is classed as betting rather than investing under UK rules. That classification is the root of its unusual tax treatment.
The Tax Position for UK Spread Bettors
For most UK retail individuals, profit from spread betting is generally free of capital gains tax and stamp duty. HMRC can treat it differently for people it regards as trading professionally, and individual circumstances vary, so nothing here is tax advice. The flip side of that tax treatment is that spread betting losses generally cannot be set against other gains for tax purposes. If you make a profit, you keep it gross, but if you suffer a loss, you cannot use it to reduce a capital gains tax bill elsewhere.
The Hidden Cost You Do Pay: The Spread
Tax-free does not mean cost-free, and the provider’s charge is built into the spread. The spread is the gap between the price at which the firm lets you bet on a rise and the price at which it lets you bet on a fall. You pay that gap when you open a position and again when you close it, so the cost is embedded in every trade. Unlike a transparent commission, the spread can easily be overlooked, especially when markets are moving quickly. Over time, even a slightly wider spread can quietly eat into returns.
How to Compare Spread Betting Providers Fairly
Because the spread is the main cost, comparing providers properly matters. Yet several factors make a like-for-like comparison harder than it first appears. Getting it wrong can leave you with a misleading picture of what you will actually pay.
- Account Type Matters The same provider usually prices its account types differently. A spread betting account, a CFD account and a commission-based account at one firm can each show a different spread on the same market. One firm can therefore have several correct spread figures at the same time. A spread figure that does not state the account type is not comparable with anything, because you do not know which pricing model it belongs to.
- Advertised ‘From’ Spreads Are Not Typical An advertised ‘from’ spread is the lowest figure available under the best conditions, not a typical cost. It tells you what the provider can offer in ideal circumstances, often when markets are calm and liquidity is deepest. Relying on that headline number will almost always overstate how cheaply you can trade day to day. You need a more representative snapshot to judge what you are likely to pay.
- Timing Changes Everything Spreads move through the day and widen around news, so a reading on one provider can only be compared with a reading on another if both were taken at the same clock times on the same days. A spread captured at 09:00 on a quiet Tuesday cannot be fairly measured against one taken at 12:00 on a volatile Friday. Without synchronised timestamps, any comparison is guesswork.
CompareForexBrokers.co.uk publishes a modal spread for each of 41 account configurations across 27 FCA-authorised firms, with the account type stated alongside every figure, because the same firm often prices its accounts differently. The readings are recorded on funded live accounts at 09:00, 12:00 and 16:00 London time across three trading days.
CompareForexBrokers.co.uk is a forex and CFD broker comparison site for UK traders. It covers only brokers authorised by the Financial Conduct Authority, and ranks them using spread and execution data recorded from funded live accounts rather than figures supplied by the brokers.
Final Thoughts on Tax-Free Spread Betting Costs
Tax advantages are real for most retail bettors, but they represent only one side of the ledger. The spread itself is a cost you pay on every trade, and small differences in it compound over time. Checking that a firm is FCA-authorised on the Financial Services Register is a basic safety step before you open an account. Insisting on account-type detail, representative spreads and matched timing puts you in a much stronger position to keep your costs under control.