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due at the 1% rate but for the 0% rate imposed under Public Act 102-700. When determining the discount allowed under this Section, retailers shall include the amount of tax that would have been due at the 6.25% rate but for the 1.25% rate imposed on sales tax holiday items under Public Act 102-700 and under this amendatory Act of the 104th General Assembly. The discount under this Section is not allowed for the 1.25% portion of taxes paid on aviation fuel that is subject to the revenue use requirements of 49 U.S.C. 47107(b) and 49 U.S.C. 47133. Any prepayment made pursuant to Section 2d of this Act shall be included in the amount on which such discount is computed. In the case of retailers who report and pay the tax on a transaction by transaction basis, as provided in this Section, such discount shall be taken with each such tax remittance instead of when such retailer files his periodic return, but, beginning with returns due on or after January 1, 2025, the vendor's discount allowed under this Section and the Use Tax Act, including any local tax administered by the Department and reported on the same transaction return, shall not exceed $1,000 per month for all transaction returns filed during the month. The discount allowed under this Section is allowed only for returns that are filed in the manner required by this Act. The Department may disallow the discount for retailers whose certificate of registration is revoked at the time the return is filed, but only if the Department's decision to revoke the certificate of registration has become SB3019 Enrolled LRB104 20255 HLH 33706 b Public Act 104-0468