(a) First premium. The lender, upon the endorsement of the loan for insurance, shall pay to the Commissioner a first loan insurance premium equal to one percent of the original face amount of the note.

(b) Second premium. The lender, on the date of the first principal payment, shall pay a second premium equal to one percent of the average outstanding principal obligation of the loan for the year following such first principal payment date which shall be adjusted as of that date so that the aggregate of the first and second premiums shall equal the sum of one percent per annum of the average outstanding principal obligation of the loan for the period from the date of the insurance endorsement to one year following the date of the first principal payment.

(c) Annual insurance premium. Until the note is paid in full, or until the loan is assigned to the Commissioner, or until the contract of insurance is otherwise terminated with the consent of the Commissioner, the lender, on each anniversary of the date of the first principal payment shall pay an annual loan insurance premium equal to one percent of the average outstanding principal obligation of the loan for the year following the date on which such premium becomes payable.

(d) Method of premium payment. Premiums shall be payable in cash or in debentures of the General Insurance Fund at par plus accrued interest. All premiums are payable in advance and no refund can be made of any portion thereof except as provided in § 232.800 et seq.

(e) Calculation of premiums. The premiums payable on and after the date of the first principal payment shall be calculated in accordance with the amortization provisions without taking into account delinquent payments or prepayments.