(1)The buyer in a land transaction may take one of the steps mentioned in subsection (2) to obtain a repayment of tax if—
(a)section 18(2) or 19(2) (contingent, uncertain and unascertained consideration) applies in relation to the transaction (or to any transaction in relation to which it is a linked transaction),
(b)an event mentioned in section 31(2) occurs, and
(c)the effect of the event is that less tax is payable in respect of the transaction than has already been paid.
(2)The steps are—
(a)within the period allowed for amendment of the land transaction return, amend the return accordingly,
(b)after the end of that period (if the land transaction return is not so amended), make a claim to the Tax Authority for repayment of the amount overpaid.
(3)This section does not apply so far as the consideration consists of rent (see schedule 19 (leases)).