Prospective
AdjustmentsU.K.
17(1)Where an assessment to P is withdrawn or reduced, or P's liability in respect of plastic packaging tax is otherwise adjusted, the Commissioners may determine that R's liability is to be cancelled or reduced, or otherwise adjusted, in whatever way they consider just and reasonable, having regard in particular to their reasons for considering that paragraph 10(2) or (3) applies to R.U.K.
(2)If the Commissioners decide to reduce or cancel the amount which R is liable to pay, or make any other adjustment to the assessment to R, they must, within the period of 30 days beginning with the day on which they make their decision—
(a)inform R of the new amount which R is liable to pay (if any), and
(b)repay any amount which R has paid in excess of the new amount.