Capital Gains Tax Calculation From Annual Statement

Wondering if anyone here can help.

I’m looking at my annual statement for 2025/26 and I made some significant profits through CFDs which I need to declare with HMRC.

How do you calculate your full taxable gain for non-ISA accounts? Do you use the Closed Result figure? Is Overnight Interest (I have about £1k of it) deductible from your overall P&L? Is there anything else I’ve missed that needs adding/taking away.

Assuming overnight interest made on cash is taxed separately. Unfortunately Trading212 don’t provide any guidance on statements around how to calculate tax returns.

Thanks in advance!

Hey @UKInvestor90 I suggest checking the UK Self-assesment tax return guide in the app.

Account statements → Annual statements