(2) An instrument effecting or evidencing the sale or transfer may be stamped
"interim stamp only".
(3) The Chief Commissioner must, when the full
dutiable value of the dutiable property has been ascertained, reassess the
duty payable in respect of the instrument.
(4) If no further duty is payable,
the interim stamp is to be cancelled and any amount paid in excess of the
amount assessed is to be refunded.
(5) If further duty is payable, liability
for the further duty arises when a notice of assessment is issued, despite any
other provision of this Act.
(6) On payment of the balance of the duty (and
any interest or penalty tax), the instrument is to be stamped with the amount
of the balance and marked to indicate that duty has been duly paid.