(1)In Schedule 1AB to TMA 1970 (recovery of overpaid tax etc), in paragraph 3 (making a claim), in sub-paragraph (3) after “the relevant tax year is” insert “—
(a)where the amount liable to be paid is excessive by reason of a mistake in a return or returns under section 8, 8A or 12AA, the tax year to which the return (or, if more than one, the first return) relates, and
(b)otherwise,”.
(2)In Schedule 2 to OTA 1975, in paragraph 13C (claim for relief for overpaid tax etc: making a claim), in sub-paragraph (3) after “the relevant chargeable period is” insert “—
(a)where the amount liable to be paid is excessive by reason of a mistake in a return or returns under paragraph 2 or 5, the chargeable period to which the return (or, if more than one, the first return) relates, and
(b)otherwise,”.
(3)In Part 6 of Schedule 18 to FA 1998 (overpaid tax, excessive assessments or repayments, etc), in paragraph 51B (making a claim), in sub-paragraph (3), after “the relevant accounting period is” insert “—
(a)where the amount liable to be paid is excessive by reason of a mistake in a company tax return or returns, the accounting period to which the return (or, if more than one, the first return) relates, and
(b)otherwise,”.
(4)The amendments made by this section have effect in relation to any claim (in respect of overpaid tax, excessive assessment etc) made after the end of the six month period beginning with the day on which this Act is passed.