New Jersey Statutes Title 54A. New Jersey Gross Income Tax Act 54A § 7-1

(a) General.--From and after September 1, 1976, every employer maintaining an office or transacting business within this State and making payment of any wages subject to New Jersey personal income tax or making payment of any remuneration for employment subject to contribution under the New Jersey “unemployment compensation law” pursuant to R.S.43:21-1 et seq. that is subject to New Jersey personal income tax to a resident or nonresident individual shall deduct and withhold from such wages for each payroll period a tax computed in such manner as to result, so far as practicable, in withholding from the employee's wages during each calendar year an amount substantially equivalent to the tax reasonably estimated to be due resulting from the inclusion in the employee's New Jersey income of his wages received during such calendar year. The method of determining the amount to be withheld shall be prescribed by regulations of the director, with due regard to the withholding exemptions of the employee.

(b) Withholding exemptions.--For purposes of this section:

An employee shall be entitled to the equivalent of the same number of New Jersey withholding exemptions as the number of withholding exemptions to which he is entitled for Federal income tax withholding purposes. An employer may rely upon the number of Federal withholding exemptions claimed by the employee.

(c) The payor of New Jersey gambling winnings shall withhold New Jersey gross income tax on those winnings at a rate of 3% in all instances where the payor is required to withhold for federal income tax purposes under subsection (q) of section 3402 of the federal Internal Revenue Code of 1986 (26 U.S.C. s.3402), as amended, except that this subsection shall not apply to the New Jersey State Lottery, except if winnings paid by the New Jersey State Lottery are included in gross income pursuant to N.J.S.54A:6-11. The rate of withholding for gambling winnings paid by the New Jersey State Lottery shall be determined by the director.