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liability imposed under this Act, including any audit liability. Beginning on July 1, 2023 and through December 31, 2032, a retailer may accept a Sustainable Aviation Fuel Purchase Credit certification from an air common carrier-purchaser in satisfaction of Use Tax on aviation fuel as provided in Section 3-87 of the Use Tax Act if the purchaser provides the appropriate documentation as required by Section 3-87 of the Use Tax Act. A Sustainable Aviation Fuel Purchase Credit certification accepted by a retailer in accordance with this paragraph may be used by that retailer to satisfy Retailers' Occupation Tax liability (but not in satisfaction of penalty or interest) in the amount claimed in the certification, not to exceed 6.25% of the receipts subject to tax from a sale of aviation fuel. In addition, for a sale of aviation fuel to qualify to earn the Sustainable Aviation Fuel Purchase Credit, retailers must retain in their books and records a certification from the producer of the aviation fuel that the aviation fuel sold by the retailer and for which a sustainable aviation fuel purchase credit was earned meets the definition of sustainable aviation fuel under Section 3-87 of the Use Tax Act. The documentation must include detail sufficient for the Department to determine the number of gallons of sustainable aviation fuel sold. The Department may require returns to be filed on a quarterly basis. If so required, a return for each calendar SB3019 Enrolled LRB104 20255 HLH 33706 b Public Act 104-0468