49. No rate of interest on a loan, a line of credit or a special loan may exceed the maximum rate calculated in accordance with the regulations by reference to the prime rate within the meaning of the regulations. It may vary depending on whether it is a loan, a line of credit or a special loan; it is subsequently adjusted at the intervals and according to the criteria prescribed by regulation.
Where varying rates of interest apply to several loans or special loans held by one and the same borrower, the Office may fix a weighted rate in accordance with the rules prescribed by regulation.