Interest on delayed refunds: statutory interest accrues after the prescribed period until refund, with higher ceiling for finalized adjudications. Interest is payable when a tax refund ordered under the refund provisions is not made within sixty days of receipt of the refund application; interest runs from the day after the sixty-day period until payment at a rate not exceeding six per cent. as notified by the Government on Council recommendations. Where the refund claim arises from a final adjudicatory or appellate order, a higher ceiling applies and interest may be payable at a rate not exceeding nine per cent. as notified. Appellate or court orders against proper officer orders are deemed to be orders under the primary refund provision for interest purposes.