25 ILCS 80/10
Responsibility for the Preparation and Filing of Balanced Budget Notes. A Balanced Budget Note shall be prepared and filed in writing for every supplemental appropriation bill. A Balanced Budget Note shall also be prepared and filed on any amendment to a supplemental appropriation bill or any amendment to a bill that would cause it to become a supplemental appropriation bill. The sponsor of a supplemental appropriation bill shall be responsible for the preparation and filing of the Balanced Budget Note upon the introduction of the bill. For any amendment to a supplemental appropriation bill or an amendment to another bill that would cause it to become a supplemental appropriation bill, the sponsor of the amendment shall be responsible for the preparation and filing of the Balanced Budget Note when the amendment is adopted. For any supplemental appropriation bill which is amended in an appropriations committee and is reported out of the committee, the sponsor of the bill shall be responsible for preparing and filing the Balanced Budget Note on the amended version of the bill. For any conference committee report on a supplemental appropriation bill, the conference committee shall be responsible for the preparation and filing of the Balanced Budget Note.
25 ILCS 80/10