CGT on property

Hi, I married a Romanian woman in 2012, we bought a house together in the UK in September 2015 as tenants in common with 80% belonging to me and 20% owned by my wife. I already owned my own property in the UK at that time. We have not lived or worked in the UK since buying the property; the houses were bought to rent out. Now we are divorcing and will possibly have to sell our joint owned property. If we sell it, what will the capital gains tax please? Does my wife get a tax free allowance? I am a British citizen with a UK passport, my wife holds a Romanian passport. We work and live in Romania. My second property in the UK has not been rented out for a number of years as it needs updating (I am still paying council tax on it) and neither of us have an income from the UK. Neither of us are earning more than £50000 in Romania. I need to work out if it is financial beneficial for me to buy her out. If I decide to buy the property from her and sell it later on, what will the capital gains tax be then please?

Hi AndrewMorgan,
We cannot advise you how much capital gains tax is payable, merely refer you to the guidance.  
Please have a look at the guidance on private residence relief at HS283 Private Residence Relief (2024) as you may be entitled to claim this relief, if the property was your main
residence for a period of time.  
There is a calculator at Tax when you sell your home, which leads on to registering for a capital gains account.  
You will need to use the capital gains services to report and pay your capital gains within 60 of the completion date.  
For an answer to a detailed question of this nature, you would need to contact our self assesment helpline on 0300 200 3310, contact our webchat facility at Contact HMRC or seek professional advice.
Thank you.