(1)On a claim for a tax credit the Board must decide—
(a)whether to make an award of the tax credit, and
(b)if so, the rate at which to award it.
(2)Before making their decision the Board may by notice—
(a)require the person, or either or both of the persons, by whom the claim is made to provide any information or evidence which the Board consider they may need for making their decision, or
(b)require any person of a prescribed description to provide any information or evidence of a prescribed description which the Board consider they may need for that purpose,
by the date specified in the notice.
(3)The Board’s power to decide the rate at which to award a tax credit includes power to decide to award it at a nil rate.