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month or 27.5% of the taxpayer's liability for the same calendar month of the preceding year. If the month during which such tax liability is incurred begins on or after January 1, 1987 and prior to January 1, 1988, each payment shall be in an amount equal to 22.5% of the taxpayer's actual liability for the month or 26.25% of the taxpayer's liability for the same calendar month of the preceding year. If the month during which such tax liability is incurred begins on or after January 1, 1988, and prior to January 1, 1989, or begins on or after January 1, 1996, each payment shall be in an amount equal to 22.5% of the taxpayer's actual liability for the month or 25% of the taxpayer's liability for the same calendar month of the preceding year. If the month during which such tax liability is incurred begins on or after January 1, 1989, and prior to January 1, 1996, each payment shall be in an amount equal to 22.5% of the taxpayer's actual liability for the month or 25% of the taxpayer's liability for the same calendar month of the preceding year or 100% of the taxpayer's actual liability for the quarter monthly reporting period. The amount of such quarter monthly payments shall be credited against the final tax liability of the taxpayer's return for that month. Before October 1, 2000, once applicable, the requirement of the making of quarter monthly payments to the Department by taxpayers having an average monthly tax liability of $10,000 or more as determined in the manner provided above shall continue until such taxpayer's average monthly liability to SB3019 Enrolled LRB104 20255 HLH 33706 b Public Act 104-0468