N.J. Stat. § 54:50-20
A person who is a tax preparer with respect to any State tax return or claim for refund, shall sign the return or claim and provide the tax identification number assigned to the preparer or his employer or both as provided for in section 6109 of the federal Internal Revenue Code of 1986 (26 U.S.C. s. 6109), as amended.
As used in this section, "tax preparer" means any person who prepares for compensation, or who employs one or more persons to prepare for compensation, any return of tax or claim for refund under Title 54 of the Revised Statutes or Title 54A of the New Jersey Statutes. For purposes of this section, the preparation of a substantial portion of a return or claim for refund shall be treated as if it were the preparation of such return or claim for refund.
Any tax preparer who fails to sign a return or claim or provide the assigned tax identification number shall be liable for a $25.00 penalty for each such failure.
N.J.S. § 54:50-20