(a)  In general

Except as provided in section 690e(d) of this title, 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 section 661a of title 2) to the Administration of purchasing and guaranteeing debentures under this part, which amounts shall be paid to and retained by the Administration.

(b)  Offset

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