Hello Jonathan, I am Keith, one of the experts on Just Answer, and pleased to be able to help you with your question.
You are not correct in thinking that she has an equal share in the property simply because you married. You are still the 100% owner. You could enter into a conveyance which would make you Tenants in Common on the basis you suggest. No taxation is due on such a transfer as it is inter spousal and outside the scope of UK taxation. Once this transfer is made then the rental can be split as per the ownership percentages.
Remember a married couple can only have one residence between them for Private Residence Relief (PRR) (although they both receive the financial benefits of the relief) so you might find it prudent to elect for the second home to be so designated. This election is only available within two years of the acquisition of a second residence. Of course this all depends upon which home the most gain is likely to occur.
I do hope that you have found my reply of assistance.
SDLT is based on the consideration passed and in this case there is no consideration thus no SDLT.
You have two years from purchase to elect your new residence for PRR.
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Weekend weather does not apply. I am answering you from a time zone 6 hours ahead of BST and it is hot and sticky, monsoon season!
Thank you for yur support.