Hi psingh01,
The default split for spouses and civil partners for jointly owned property is 50/50.
To elect to change this to the unequal split as tennants in common, will require the completion of form 17, declaring the change.
Please note that the completed form and deed of trust, must be in HMRC possession within 60 days of form 17 beings signed.
Late submission will always be rejected and a new submission will be required.
Declare beneficial interests in joint property and income
Thank you.