Hi,
We can only give general advice on a forum as we don’t have access to all the specific information, and of course the normal rules regarding Self-Assessment apply.
Firstly, where you talk about OEIC’s being held within a WRAP, we assume you mean like an Umbrella Scheme, as described at CG41580 and CG57760. CG57750 onwards covers OEIC’s in general and CG57751 states that shares in OEIC’s are for the most part treated like shares in Authorised Unit Trusts. Dividends received from Unit Trust Accumulation funds are covered in CG57707 and as it states here, the amount that would normally be distributed as a dividend is instead re-invested into the fund to which it relates.
For Income tax purposes, this amount should still be returned as dividend income in the normal way. For CG purposes it has the effect of increasing the value of units in that holding accordingly. The amount that is subject to IT on the holder as dividend Income, is allowable expenditure for CG purposes (so effectively increases the base cost of the units in the holding).
Where some units are sold, then that would constitute a disposal of shares from that holding. Assuming all units in the holding are of the same type and class this will work like a S104 Pool, with any Gain is calculated in the normal way. There is a Help sheet HS284 that covers shares and includes information about S104 pooling that you may find useful. It also contains brief guidance on Accumulation trusts and Umbrella schemes.
Shares and Capital Gains Tax (Self Assessment helpsheet HS284)
Finally, if you have calculated a Capital Loss for 2022 to 2023 this will need to be reported in the normal way, so if you have completed an SA return for 2022 to 2023, you should amend this to include a CG page with the relevant disposal details. Any gain calculated for 2023 to 2024 will also need to be reported on CG pages of your return.
You should include an attachment of the spreadsheet with the return to show your workings of the loss and gain. Whether you include separate spreadsheets for 2022 to 2023 and 2023 to 2024 or use the same one for both years is up to you, so long as the information relating to each year is clearly identified.
Thank you.