One of the biggest advantages of spread betting for UK traders is its tax-free status. But the rules are more nuanced than most people realise. Here is exactly how HMRC classifies spread betting, when it could become taxable, and what records you should keep.
The Basic Rule: Tax-Free for Most People
Under current UK tax law, spread betting profits are exempt from:
- Capital Gains Tax (CGT) — no tax on profits, regardless of size
- Stamp Duty — saving 0.5% compared to buying shares directly
- Income Tax — spread betting gains are not treated as income
This is because HMRC classifies spread betting as gambling under the Gambling Act 2005 (see our FAQ for more on this distinction). The spread betting company pays a licence fee and betting duty instead, and individual punters are not taxed on their winnings.
When Could Spread Betting Become Taxable?
There is one important exception. If HMRC determines that your spread betting constitutes a trade rather than gambling, your profits could be subject to Income Tax. This is rare, but the factors HMRC considers include:
- Frequency and volume — trading as your primary activity, all day every day
- Organisation — running it like a business with formal systems and processes
- Sole source of income — relying entirely on spread betting profits to live
- Sophistication — using professional-grade tools, algorithms, and direct market access
In practice, HMRC has very rarely reclassified a spread bettor as a trader. The vast majority of retail spread bettors — even profitable ones — remain firmly in the tax-free category. But if you are generating six-figure annual profits as your sole income, it is worth getting professional tax advice.
Losses Cannot Be Offset
The flip side of tax-free profits is that spread betting losses cannot be offset against other capital gains or income. If you lose £10,000 spread betting and make £10,000 from share dealing, you still owe CGT on the share dealing profit. This is the trade-off for the tax exemption.
This is one reason some traders use CFDs instead for hedging purposes — CFD losses can be offset against other gains.
What Records Should You Keep?
Even though profits are tax-free, keeping good records is important:
- Trade history — dates, instruments, entry/exit prices, and profit/loss per trade
- Account statements — monthly or annual statements from your broker
- Deposit and withdrawal records — money in and out of your trading account
- Annual summary — total profit/loss for each tax year (6 April to 5 April)
Most brokers provide downloadable trade history and account statements. Keep these for at least 6 years in case HMRC ever queries your tax return.
Spread Betting and Self-Assessment
You do not need to declare spread betting profits on your Self-Assessment tax return. There is no box for it and HMRC does not expect to see it. However, if you are completing a return for other reasons (e.g. self-employment), there is no harm in keeping a note of your spread betting activity alongside your other records.
Summary
| Tax | Applies to Spread Betting? |
|---|---|
| Capital Gains Tax | No (exempt) |
| Income Tax | No (unless classified as a trade) |
| Stamp Duty | No |
| Loss relief | No (losses not offsettable) |
| Self-Assessment | Not required |
For most UK traders, spread betting remains one of the most tax-efficient ways to trade financial markets. See our broker rankings to find the right FCA-regulated platform.
