The settlement date for calculation of the rebate in Schedules 1 to 4 to these Regulations may be deferred as follows -
(a) where the agreement provides for the credit to be repaid over, or at the end of, a period of 5 years or less, by 2 months;
(b) where the agreement provides for the credit to be repaid over, or at the end of, a period of more than 5 years, by 1 month.