So I have a client who originally bought a property with her brother. She then re-mortgaged and purchased her brothers share meaning she owned 100% of the property. She then started rented out the property and that is when she came to me as a client. She has now sold the property & I have to complete the Capital Gains calculation but I am unsure of which purchase price to use.... do I use her 50% of the original cost OR the remortgaged cost. Alternatively, do I use her 50% original cost PLUS the amount she paid to her brother. Any advice would be greatly received. I've looked over the internet but cannot find anything and this is the first time I have come across this situation.
Thanks in advance :)