Forex trading tax in the UK in 2026 depends entirely on how you trade — spread betting is completely tax-free, while CFD profits attract Capital Gains Tax. Here’s exactly what HMRC requires.
Forex Trading Tax UK 2026 — What HMRC Requires
The tax treatment of forex trading in the UK depends on whether you’re trading through CFDs, spread betting, or spot forex — and whether HMRC classifies you as a private investor or professional trader. Here’s the clear breakdown for 2026.
Spread Betting — Tax Free
Spread betting profits are exempt from Capital Gains Tax and Income Tax in the UK. This is not a loophole — it’s how spread betting is legally classified under UK tax law. HMRC’s guidance confirms that spread betting is a form of gambling for tax purposes. You also cannot offset spread betting losses against other capital gains. Providers: IG Markets, CMC Markets, City Index, Spreadex.
CFD Trading — Capital Gains Tax
Profits from forex CFD trading are subject to Capital Gains Tax. Rate: 24% for higher rate taxpayers, 18% for basic rate taxpayers (2026/27). Annual CGT allowance: £3,000. Losses can be offset against other CGT gains. You must report CFD gains via Self Assessment.
Professional Trader Classification
If HMRC classifies you as a professional trader (forex is your primary income source, you trade with the sophistication of a business), your profits may be subject to Income Tax (up to 45%) rather than CGT. This classification is rare but becomes relevant for full-time traders with consistent large profits. Consult a specialist tax adviser if you’re in this territory.
Record Keeping
Keep records of: every trade (open and close date, instrument, size, price), total annual profit/loss per account, broker statements. Most platforms provide annual tax statements. Software: Koinly, TaxScouts (UK-specific), or a specialist forex accountant for complex situations.
Consult a qualified tax adviser for personalised guidance. This is general information only.