15Where—
(a)there is a land transaction that is—
(i)a transfer of value within section 3 of the Inheritance Tax Act 1984 (c.51) (transfers of value), or
(ii)a disposition, effected by will or under the law of intestacy, of a chargeable interest comprised in the estate of a person immediately on the person’s death, and
(b)the buyer is or becomes liable to pay, agrees to pay or does in fact pay any inheritance tax due in respect of the transfer or disposition,
the buyer’s liability, agreement or payment does not count as chargeable consideration for the transaction.