(a) The mortgagee, upon the initial-final endorsement of the mortgage for insurance pursuant to a Commitment to Insure Upon Completion issued in accordance with § 207.32a, shall pay to the Commissioner a first mortgage insurance premium equal to one percent of the original face amount of the mortgage.

(b) The mortgagee, 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 mortgage 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 mortgage for the period from the date of the insurance endorsement to one year following the date of the first principal payment.

(c) The provisions of paragraphs (d), (e) and (f) of § 207.252 shall apply to mortgages insured pursuant to section 223(f) of the Act.