By Ken Chigbo, founder of KenMacro, 18 years trading macro and FX (London floor and institutional desks). Last updated 2026-05-26. Educational only, not financial or tax advice.
In the UK, spread betting profits are tax-free (HMRC treats them as gambling). CFD and direct forex profits are subject to Capital Gains Tax above the GBP3,000 allowance, at 18% or 24%. In rare cases where HMRC considers you a professional trader, profits fall under Income Tax instead. This is general information, not tax advice.
Tax quietly decides how much of your trading you keep. Here is how the three cases work, in plain English.
Spread betting: tax-free for most
HMRC treats spread betting as gambling, so for the vast majority of UK residents the profits are free of Capital Gains Tax and stamp duty. The catch: you cannot offset spread betting losses against tax.
CFDs and direct forex: Capital Gains Tax
CFD and direct forex profits are taxed under CGT above the annual allowance (GBP3,000 for 2025/26), at 18% for basic-rate taxpayers and 24% for higher and additional-rate taxpayers. Losses can be offset against gains and carried forward, which spread betting does not allow.
The professional-trader case (Income Tax)
In uncommon cases, HMRC may treat trading as a trade in its own right, putting profits under Income Tax (and National Insurance). This is fact-specific and rare for retail traders; if your trading is substantial and business-like, take professional advice.
Choosing the tax-efficient route
If you are a profitable UK resident, the spread betting route is usually the most tax-efficient, and it can only be offered by FCA-regulated firms. Of our partners, Vantage offers a UK spread betting account under its FCA licence.
The FCA-regulated pick
Vantage (FCA, FRN 590299)
Vantage offers UK traders a tax-free spread betting account and CFD accounts under its FCA licence. Authorised by the FCA as Vantage Global Prime LLP, with FSCS protection up to GBP85,000, negative balance protection, and the FCA 1:30 retail leverage cap. It is the one partner we route UK traders to, because it is the one that is actually FCA-regulated.
Affiliate link, at no extra cost to you. Capital at risk. Most retail CFD accounts lose money.
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Frequently asked questions
How is forex trading taxed in the UK?
It depends on the product. Spread betting profits are tax-free (treated as gambling). CFD profits are subject to Capital Gains Tax above the GBP3,000 allowance (18% or 24%). If HMRC deems you a professional trader, profits can instead fall under Income Tax. This is not tax advice.
Do I pay Capital Gains Tax on forex profits?
On CFD forex profits, yes, above the GBP3,000 annual CGT allowance for 2025/26, at 18% for basic-rate or 24% for higher and additional-rate taxpayers. Spread betting profits are exempt from CGT.
Is forex trading tax-free in the UK?
Only via spread betting, which HMRC treats as gambling and is therefore free of CGT and stamp duty for most residents. CFD and direct forex trading are taxable.
Do I need to declare forex profits to HMRC?
If you have taxable gains (for example CFD profits above the CGT allowance) you must report them via Self Assessment. Spread betting profits are generally not declarable. When in doubt, speak to an accountant.
This article is for education and information only and is not financial, investment or tax advice. Tax treatment depends on your individual circumstances and may change; confirm with HMRC or a qualified adviser. Trading CFDs and spread betting carries a high risk of rapid loss due to leverage; most retail accounts lose money. FCA protections (FSCS, the Financial Ombudsman, negative balance protection) apply only to FCA-regulated firms, not to offshore entities. KenMacro has commercial partnerships with brokers including Vantage and may earn a commission if you open an account through our links, at no extra cost to you.