My husband and I would like to alter the tax split on a rental property. We currently own as joint tenants and understand we need to transition to a tenancy in common in order to do this. I think all we need to do is complete and have witnessed a Form 17 declaration then notify HMRC. I assume we can do this – and it would still be official – rather than having to pay for a lawyer to do it? And do you have a pro forma Form 17 we could use please?