Have a read of this. Capital gains tax allowances and rates - Which?
Should answer all queries regarding CGT.
Trying to get head around CGT… but I thought that when you trade CFD you dont actually ever have the assets, therefore does CFD fall under this as I understood it to be relevant when you purchase and sell an asset, (which as per previous CFD understanding you never actually have!)
Gains on CFDs are subject to the UK capital gains tax regime. See this HMRC page for explanation:
CG56100 - Futures: financial futures: contracts for differences
The slight difficulty is what to use for the basis cost when reporting. I used the margin requirement at opening cost of the position. The closing proceeds is then the profit plus the opening cost. Overnight interest is deductible against the taxable gain.