Ill. Admin. Code tit. 74, § 1200.120
a) Any amounts collected under this Part, including amounts collected by outside collection firms under contract with the Bureau, and including any amount that results in overpayment of the delinquent debt, shall be deposited in, or transferred to the appropriate funds, as specified by statute.
c) Collections arising from referrals from the Department of Public Aid
under Section 1200.60(c) shall be deposited into such fund or funds as the Department of Public Aid shall direct, in accordance with the requirements of Title IV, Part D of the federal Social Security Act, applicable provisions of State law, and the rules of the Department of Public Aid. [30 ILCS 210/10(h)]