1 Nov 2019 You need to pay capital gains tax (CGT) when you profit from selling valuable assets such as shares, cryptocurrencies, art, or property. UK trading taxes are a minefield. Whether you are day trading CFDs, bitcoin, stocks, futures, or forex, there is a distinct lack of clarity, as to how taxes on losses and profits should be applied. However, with day trading promising an enticing lifestyle and significant profit potential, you shouldn’t let the UK’s obscure tax rules deter you. The tax on forex trading in the UK depends on the instrument through which you are trading currency pairs: you can fall under spread betting or you can trade contract for difference (CFD). If the trading activity is performed through a spread betting account the income is tax-exempt under UK tax law.