CGT following Deed of Variation

My mother purchased a 25% share in a 200k property in 2008. The 25% was passed to my father via a deed of variation in 2023 when the property was valued at 350k. The property s now being sold for 450k. Will my father's acquisition cost for CGT be 25% of 200k or 350k?

Hi ,
 

It will be the original value so 25% of the £200k .

Thank you .
 

Thank you. Please could you provide the Tax Manual reference/section that supports this decision?

Hi ,
 

Please refer to : Capital Gains Tax: what you pay it on, rates and allowances   . Thank you .

Hi HMRC Admin, The weblink to the general CGT pages does not provide evidence for your original answer. Please provide a reference/link to the relevant section in the formal Tax Manual?

Hi,
You can see guidance here:
CG31630 - Death and Personal Representatives: Variation of the devolution of an estate: Instruments of variation: CGT effects: if conditions satisfied
Thank you.