(1) Where property contracted to be sold for one consideration for the whole is conveyed to the purchaser in separate parts or parcels by different instruments, the consideration is to be apportioned in such manner as the parties think fit, so that a distinct consideration for each separate part or parcel is set out in the conveyance relating thereto, and such conveyance is to be charged with ad valorem duty in respect of such distinct consideration.
(2) Where property contracted to be purchased for one consideration for the whole by 2 or more persons jointly, or by any person for himself or herself and others, or wholly for others, is conveyed in parts or parcels by separate instruments to the persons by or for whom the same was purchased for distinct parts of the consideration, the conveyance of each separate part or parcel is to be charged with ad valorem duty in respect of the distinct part of the consideration therein specified.
(3) Where there are several instruments of conveyance for completing the purchaser's title to property sold, the principal instrument of conveyance only is to be charged with ad valorem duty, and the other instruments are to be respectively charged with such other duty as they may be liable to, but the last mentioned duty shall not exceed the ad valorem duty payable in respect of the principal instrument; in any such case the parties may determine for themselves which of several instruments is to be deemed the principal instrument and may pay the ad valorem duty thereon accordingly.
(4) Where a person having contracted for the purchase of any property, but not having obtained a conveyance thereof, contracts to sell the same to any other person, and the property is in consequence conveyed immediately to the sub-purchaser, the conveyance is to be charged with ad valorem duty in respect of the consideration moving from the sub-purchaser.
(5) Where a person having contracted for the purchase of any property, but not having obtained a conveyance, contracts to sell the whole or any part or parts thereof to any other person or persons, and the property is in consequence conveyed by the original seller to different persons in parts or parcels, the conveyance of each part or parcel is to be charged with ad valorem duty in respect only of the consideration moving from the sub-purchaser thereof, without regard to the amount or value of the original consideration.
(6) Where a sub-purchaser takes an actual conveyance of the interest of the person immediately selling to him or her, which is chargeable with ad valorem duty in respect of the consideration moving from him or her, and is duly stamped accordingly, any conveyance to be afterwards made to him or her of the same property by the original seller shall be chargeable only with such other duty as it may be liable to, but the last-mentioned duty shall not exceed the ad valorem duty.