CGT on jointly owned property when spouse dies

My wife bought a property in 1999 with her spouse for £65k and lived in it as main residence for 30 months. Thereafter property was rented out. Spouse died in 2009. Value of property at that point is estimated to be £165k. Property was then fully owned by my wife and rented out until being put up for sale in Dec 2024 for £316k. My understanding is that the purchase price for cgt purposes is (65+165)/2 = £115k. Is this correct? If so, how and/or where is this declared on cgt submission?

Hi,
That is correct and the figure is shown as the purchase price when competing the property disposal return the percentage owned will aso be 100%.
Thank you.

Hello My mother is thinking of selling her home She owns it as tenants in common with her 2 brothers. They each own different percentages of the house If they sell will my mum be able to qualify for full private residence relief on her share so she doesnt pay any capital gains tax as she has lived in the house all the time as her main home Thank you very much

Hi Andy1*,
If it is her only and main residence and has been for the whole period of ownership, no CGT will be due on her share.
Thank you.