The interest payable for any period by a dealer, casual dealer, transporter, contractee, promoter, or any other person under the Act, shall be at the rate as specified below:-
(a) at the rate of one per centum per month up to the first ninety days of the period for which such interest is payable;
(b) at the rate of one and half per centum per month after the first ninety days and up to three hundred days of the period for which such interest is payable; and
(c) at the rate of two per centum per month after the first three hundred days of the period for which such interest is payable.