New Jersey Statutes Title 54. Taxation 54 § 49-3a

For privilege periods ending on and after July 31, 2023, but before January 1, 2024, no penalties or interest shall accrue for the underpayment of tax due with respect to any provision of P.L.2023, c. 96 (C.54:10A-4.16 et al.) that creates an additional tax liability; provided, however, for privilege periods ending on and after July 31, 2023, the additional estimated payments shall be made no later than the second next estimated payment due following the enactment of P.L.2023, c. 96 (C.54:10A-4.16 et al.) or the second estimated payment due after January 1, 2024, whichever due date is later.