34(1)A person who believes he has paid tax under an assessment that was excessive by reason of some mistake in a land transaction return may make a claim for relief under this paragraph.
(2)The claim must be made by notice in writing given to the Inland Revenue not more than six years after the effective date of the transaction.
(3)On receiving the claim the Inland Revenue shall enquire into the matter and give by way of repayment such relief in respect of the mistake as is reasonable and just.
(4)No relief shall be given under this paragraph—
(a)in respect of a mistake as to the basis on which the liability of the claimant ought to have been computed when the return was in fact made on the basis or in accordance with the practice generally prevailing at the time when it was made, or
(b)in respect of a mistake in a claim or election included in the return.
(5)In determining a claim under this paragraph the Inland Revenue shall have regard to all the relevant circumstances of the case.
They shall, in particular, consider whether the granting of relief would result in amounts being excluded from charge to tax.
(6)On an appeal against the Inland Revenue’s decision on the claim, the Special Commissioners shall hear and determine the claim in accordance with the same principles as apply to the determination by the Inland Revenue of claims under this paragraph.