(a) The loan shall bear interest at the rate agreed upon by the lender and the borrower.
(b) Interest shall be payable in monthly installments on the principal amount of the loan outstanding on the due date of each installment.
[39 FR 28966, Aug. 12, 1974, as amended at 53 FR 3366, Feb. 5, 1988; 53 FR 8885, Mar. 18, 1988]