Whether you’ll pay will depend on the ‘chargeable consideration’ (the overall price of the property, including mortgage liability, cash payments, legal fees, fixtures and fittings and any other assets). If transferring equity, you won’t need to pay if the chargeable consideration falls below the Stamp Duty threshold for the property type. You also won’t pay if you’re adding someone as part of a court order (such as owing to a divorce) or if the transfer is a gift and there is no chargeable consideration.