(A) During any fiscal year the Board of Trustees may adopt a supplemental appropriation ordinance in an amount not in excess of the aggregate of any additional revenue available to the village, or estimated to be received by the village after the adoption of the annual appropriation ordinance for that fiscal year, or from fund balances available when the annual appropriation ordinance was adopted but that were not appropriated at that time. The provision of § 33.02 of this chapter prohibiting further appropriations without sanction by petition or election shall not be applicable to the supplemental appropriation for that fiscal year.
(B) The Board of Trustees at any time, however, by a two-thirds vote of all the members of the body, may make transfers within any department or other separate agency of the village government, of sums of money appropriated for one village object or purpose to another village object or purpose, but no appropriation for any object or purpose shall thereby be reduced below an amount sufficient to cover all obligations incurred or to be incurred against the appropriation. Nothing herein contained shall deprive the Board of Trustees of the power to provide for and cause to be paid from the funds of the village any charge imposed by law without the action of the Board of Trustees, the payment of which is ordered by a court of competent jurisdiction.
(65 ILCS 5/8-2-9)