On or before the 25th day of each calendar month, the Department shall prepare and certify to the Comptroller the disbursement of stated sums of money to be paid to named municipalities from the Municipal Telecommunications Fund for amounts collected during the second preceding calendar month. The named municipalities shall be those municipalities identified by a retailer in such retailer's return as having imposed the tax authorized by the Act. The amount of money to be paid to each municipality shall be the amount (not including credit memoranda) collected hereunder during the second preceding calendar month by the Department, plus an amount the Department determines is necessary to offset any amounts that were erroneously paid to a different taxing body, and not including an amount equal to the amount of refunds made during the second preceding calendar month by the Department on behalf of such municipality, and not including any amount that the Department determines is necessary to offset any amount that were payable to a different taxing body but were erroneously paid to the municipality. Within 10 days after receipt by the Comptroller of the disbursement certification from the Department, the Comptroller shall cause the orders to be drawn for the respective amounts in accordance with the directions contained in the certification. When certifying to the Comptroller the amount of a monthly disbursement to a municipality under this Section, the Department shall increase or decrease the amount by an amount necessary to offset any misallocation of previous disbursements. The offset amount shall be the amount erroneously disbursed within the previous 6 months from the time a misallocation is discovered.
35 ILCS 636/5-50