If you have purchased a property as a first time buyer and not paid stamp duty and you subsequently decide to start renting it out (say within a year of the purchase), how is the stamp duty due on the property calculated?
Is it based on the value of the property when you start to rent it out or on the original purchase price of the property?
The stamp duty clawback is the stamp duty that you should have paid as an investor (which is what you now are if renting it out) at the time of purchase, thus based on the rate and price applicable at the time of purchase.
AFAIA clawback of stamp duty applies on property subsequently changed to investment properties (letting property incl rooms) except where the rent a room scheme (rental income less than 7,620) is availed of.