Attachment for Self Assessment tax return

Hi, This is the first year that I file my self assessment tax return. I will file online through the HMRC system. I need to fill in the SA 108 Capital Gains Tax summary because I have conducted multiple stocks transactions during the year. I have a detailed computation of these transactions. I want to ask whether I can attach a file (e.g. a PDF) as information to be submitted in box 54 ("Any other information")? Many thanks!

Hi,

Yes, the boxes on the tax return are summary figures of your gains / losses. You can attach a pdf file with a breakdown of the transactions, to support the figure declared in your return. Just before you submit your tax return, you will have the option to add pdf documents.

Thank you.