4(1)After subsection (1A) of section 30 of the Management Act (recovery of overpayment of tax etc.) there shall be inserted the following subsection—
“(1B)Subsections (2) to (8) of section 29 of this Act shall apply in relation to an assessment under subsection (1) above as they apply in relation to an assessment under subsection (1) of that section; and subsection (4) of that section as so applied shall have effect as if the reference to the loss of tax were a reference to the repayment of the amount of tax which ought not to have been repaid.”
(2)For subsection (5) of that section there shall be substituted the following subsection—
“(5)An assessment under this section shall not be out of time under section 34 of this Act if it is made before the end of whichever of the following ends the later, namely—
(a)the chargeable period following that in which the amount assessed was repaid or paid as the case may be, or
(b)where a return delivered by the person concerned, or an amendment of such a return, is enquired into by an officer of the Board, the period ending with the day on which, by virtue of section 28A(5) of this Act, the officer’s enquiries are treated as completed.”