(a) The total amount of all fees imposed during any fiscal year shall not exceed the statutory maximum imposed by Congress. The Commission shall credit pro-rata any fees collected in excess of this amount against amounts otherwise due.

(b) To the extent that revenue derived from fees imposed under the rates of fees established under §514.2 are not expended or committed at the close of any fiscal year, such funds shall remain available until expended to defray the costs of operations of the Commission.