Tax Deep Dive · 2026
Forex Trading Tax in United Kingdom 2026 — Complete Guide
How United Kingdom taxes forex and CFD profits, the rates and brackets, what counts as taxable, loss-offset rules, and how to declare your trading income to HM Revenue & Customs (HMRC).
Quick Answer
In United Kingdom, forex and CFD profits are taxed under Capital Gains Tax / Spread Betting Exemption at a headline rate of 10% / 20% CGT (or 0% on spread betting). The tax is administered by HM Revenue & Customs (HMRC) and declared each year on the Self Assessment (SA100) + SA108 capital gains pages. Yes for spread betting (treated as gambling, not investment). No for CFDs — these fall under CGT.
Forex Tax Treatment in United Kingdom
Forex trading profits are subject to Capital Gains Tax (CGT) at 10% for basic-rate taxpayers or 20% for higher and additional-rate taxpayers. Spread betting profits are generally tax-free as they are classified as gambling. Losses can be offset against gains and the annual CGT allowance (currently GBP 3,000) applies.
CFD trading profits are normally chargeable gains under CGT. Spread betting is treated as a wager and is exempt from both CGT and Income Tax for ordinary individuals.
Tax Rates Table — United Kingdom GBP
Applicable rates as of April 2026.
| Bracket / Rule | Rate |
|---|---|
| Basic-rate band CGT | 10% |
| Higher / additional-rate band CGT | 20% |
| Annual CGT exemption | GBP 3,000 |
| Spread betting profits | 0% (tax-free / not chargeable) |
What Counts as Taxable?
Most United Kingdom residents need to declare the following types of trading income:
- Realised forex/CFD capital gains. Profits from closing positions during the tax year.
- Dividend-equivalent payments. Cash adjustments paid by your broker on long share-CFD positions when the underlying issues a dividend.
- Carry / swap interest received. Positive overnight financing credited to long carry-trade positions is normally taxable as financial income.
- Cashback, rebates and bonuses. Cash incentives paid by the broker may be reportable as miscellaneous or financial income.
- Crypto CFD profits. Profits from cryptocurrency CFDs are taxed under the same rules as other CFDs (this is different from spot crypto, which usually has its own treatment).
- Foreign exchange differences. Gains or losses from holding foreign-currency balances may need to be reported separately when converted back to your home currency.
Professional vs Retail Trader — Tax Implications
If HMRC determines you are 'trading' rather than investing, profits move from CGT to Income Tax (Case I trading profits) at marginal rates up to 45% plus National Insurance.
Retail / private investor
Default treatment for almost all individuals. Profits taxed at the headline 10% / 20% CGT (or 0% on spread betting) rate under Capital Gains Tax / Spread Betting Exemption. Losses are restricted to the same category.
Professional / business trader
Triggered by frequency, volume, leverage, or income share. Profits are reclassified as ordinary business income at progressive rates plus social/contributions.
How to Declare Forex Income in United Kingdom
- 1
Download your annual statement from each broker (and convert all amounts to GBP using year-end FX rates if your account is in another currency).
- 2
Calculate net realised profit or loss for the tax year — buy/sell pairs only (unrealised positions are usually excluded, except for mark-to-market regimes).
- 3
Add carry/swap interest, dividend-equivalent payments, and any cashback or rebates.
- 4
Open Self Assessment (SA100) + SA108 capital gains pages on the HM Revenue & Customs (HMRC) portal.
- 5
Enter the totals in the capital-gains / investment-income section and indicate the source country of each broker.
- 6
Pay any balance owed by the deadline (31 January after the end of the tax year (5 April)) and keep the receipt and broker statements with your records.
Loss Offset Rules
Allowable CGT losses can be offset against gains in the same year and carried forward indefinitely against future chargeable gains. Spread betting losses are not allowable.
Record Keeping Requirements
Keep contract notes and statements for at least 22 months after the end of the tax year (longer if filing late or under enquiry).
- Annual broker statements (PDF and machine-readable formats)
- Trade-by-trade ledger with timestamps, instrument, and P&L
- Year-end account valuation (mandatory for wealth-tax regimes)
- Proof of any foreign tax already paid, to claim against home liability under double-tax treaties
- FX-conversion rates used to translate amounts into GBP
Tax Reporting Deadlines
Annual Filing Deadline
31 January after the end of the tax year (5 April)
Withholding by brokers
FCA-authorised brokers do not withhold CGT — UK residents self-assess via Self Assessment.
Recommended Accountants & Software
HMRC's Self Assessment online portal handles most cases. CCH, TaxCalc and similar packages serve traders with thousands of trades. An accountant is helpful where the trade-vs-investment line is unclear.
We do not endorse any single product. For active traders we generally recommend a local advisor who has direct experience with CFD/derivative reporting and any cross-border passporting that applies to your broker.
Frequently Asked Questions
How are forex profits taxed in United Kingdom?
Do I have to declare forex losses in United Kingdom?
Does my broker withhold tax automatically in United Kingdom?
Is forex trading tax-free anywhere in United Kingdom?
What is the filing deadline for forex tax in United Kingdom?
What records do I need to keep in United Kingdom?
Am I a professional trader for tax purposes in United Kingdom?
Do EU passporting brokers (CySEC, BaFin) report to my United Kingdom tax authority?
Best Brokers for United Kingdom
All EU-regulated, with negative balance protection and segregated client funds.
Popular brokers used by United Kingdom traders
Min Deposit
None
EUR/USD
0.6 pips average
Max Leverage
30:1
IG is the world's oldest and most trusted retail broker, offering 17,000+ instruments, a BaFin-regulated EU entity, and an award-winning proprietary platform.
Min Deposit
None
EUR/USD
0.0 pips
Max Leverage
30:1
Pepperstone is a BaFin-regulated broker offering razor-sharp spreads, zero minimum deposit, and excellent execution across MT4, MT5, cTrader, and TradingView.
Min Deposit
None
EUR/USD
0.7 pips average
Max Leverage
30:1
CMC Markets is a FTSE 250-listed broker with 35+ years of experience, offering 12,000+ instruments and an award-winning proprietary trading platform.
Min Deposit
None
EUR/USD
0.6 pips average
Max Leverage
30:1
OANDA is a veteran forex broker since 1996, known for transparent pricing, flexible lot sizes, excellent research tools, and a long track record of reliability.
Disclaimer: This is general information, not professional tax advice. Tax law changes regularly and individual circumstances vary. Always confirm your obligations with a licensed United Kingdom tax advisor or directly with HM Revenue & Customs (HMRC) before filing.
CFD Risk Warning
CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. Between 74-89% of retail investor accounts lose money when trading CFDs. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
This website is for informational purposes only. The content does not constitute investment advice. Trading leveraged products carries a high level of risk and may not be suitable for all investors. Past performance is not indicative of future results. EU retail leverage limits apply (ESMA): up to 30:1 on major FX pairs, 20:1 on minor FX, 20:1 on major indices, 10:1 on commodities, 5:1 on equities, 2:1 on crypto.