Before I start. Yes I know I am very lucky and yes i am aware of my tax liabilities. Long story short , my sibling got a gift of lump sum to buy house a few years ago and last year when i was building a house , my parents rented out my grandmothers house (mortgage free) and I have been gifted the rent money each month for a year. I understand I owe tax on rental income but how to pay tax for a property I dont actually own, I am being gifted money. I have been carrying out all repairs and paying all costs for the last year.