469Payments following review of reviewable amount

469 Payments following review of reviewable amount (a) under section 468, the Authority adjusts a reviewable amount that is premium in respect of a premium period; and (b) the premium is higher than the premium previously paid by the employer in respect of that premium period— the employer is liable to pay the Authority the difference between the premium paid and the adjusted premium, within 28 days after receiving notice of the determination under section 468. (a) under section 468, the Authority adjusts a reviewable amount that is premium in respect of a premium period; and (b) the adjusted premium is lower than the premium previously paid by the employer in respect of that period— the Authority is liable to pay the employer the difference between the premium paid and the adjusted premium, with interest in accordance with section 470, within 28 days after the notice of determination under section 468.