Glossary · UK
What is Forex Trading Tax?
UK tax on foreign exchange trading profits, which is usually Capital Gains Tax for individual investors but can be Income Tax if HMRC views the activity as a trade.
Full Definition
Profits from trading currency pairs (forex) are generally taxed under Capital Gains Tax rules for individuals who trade through a regulated broker in their own name, meaning gains above the annual CGT Annual Exempt Amount are taxable at 18% or 24% (2026/27 rates) depending on the gain and your other income. If HMRC considers the trading frequent, organised and business-like enough to meet the badges-of-trade test, profits are instead taxed as trading income under Income Tax and Class 4 National Insurance, which also allows trading losses to be offset against other income. A separate and important distinction applies to spread betting on currency pairs, which — because it is legally a bet rather than a financial transaction — is exempt from both Capital Gains Tax and Income Tax in the UK, unlike direct forex trading or CFDs. Forex traders must also keep careful records because gains and losses are usually calculated in sterling, requiring currency conversion at the relevant exchange rate for each transaction.