(1)  In a financial year beginning on 1 July 1998 or on 1 July in any subsequent year, the amount of land tax payable in respect of principal residence land where either the principal residence or the principal residence land is used partly for domestic and partly for other purposes is calculated, for the part used for purposes other than domestic purposes, in accordance with Schedule 1 according to the apportioned assessed land value of that part as determined under section 21A of the Principal Act.

(2)  In a financial year beginning on 1 July 1998 or on 1 July in any subsequent year, no land tax is payable in respect of that part of principal residence land that is used for domestic purposes.