((a)) ** In general** Except as provided in , the Administrator may charge such fees as it determines appropriate with respect to any guarantee or grant issued under this part, in an amount established annually by the Administrator, as necessary to reduce to zero the cost (as defined in ) to the Administration of purchasing and guaranteeing debentures under this part, which amounts shall be paid to and retained by the Administration.section 690e(d) of this titlesection 661a of title 2

((b)) ** Offset** The Administrator may, as provided by , offset fees charged and collected under subsection (a).section 690g of this title