Article 6 Demand notices: final adjustments
A billing authority may authorise a contractor to exercise the functions—
(a)
after the expiry of a chargeable period or part of a chargeable period for which an amount is payable in relation to a hereditament by way of BID levy, of preparing and serving a further notice on the person who is liable for the BID levy stating the amount payable for the period or part in relation to the hereditament and adjusting the amounts required to be paid; and
(b)
where there has been an overpayment in respect of the person’s liability under Part II of the 1989 Regulations, of repaying the amount overpaid or crediting it against any subsequent liability of the person for BID levy.