N.J. Stat. Ann. § 54:29A-46.1

Any taxpayer may pay the whole or any part of the franchise tax assessed for the year one thousand nine hundred and forty-one at any time prior to June fifth, one thousand nine hundred and forty-two, and the State Treasurer shall accept such payments and issue receipts therefor; provided, that if such franchise tax of any taxpayer shall be adjusted, corrected or revised, amounts heretofore or hereafter paid under this act shall be credited on account of such adjusted, corrected or revised tax, and if such payments should exceed the amount of such adjusted, corrected or revised tax, the excess shall be credited upon the taxes next legally levied and payable by such taxpayer.