N.J. Stat. § 54:38-7
The executor, administrator, trustee or other person or corporation liable for the payment of the tax hereunder shall file with the Director of the Division of Taxation in the Department of the Treasury a copy of the federal estate tax return within thirty days after the filing of the original with the federal government, and a copy of any communication from the federal government making any final change in said return, or confirming, increasing or diminishing the tax thereby shown to be due, which is to be filed within thirty days after receipt thereof. In the case of any decedent dying after December 31, 2001 the executor, administrator, trustee or other person or corporation liable for the payment of such tax shall prepare and file with the director, in addition to a copy of such return, if any, as shall have been filed with the federal government, a federal estate tax return in the form in which such return would have been required to be filed with the federal government under the provisions of the federal Internal Revenue Code of 1986 (26 U.S.C. s.l et seq.) in effect on December 31, 2001, within 30 days after the date on which such a filing would have been due under those provisions for a decedent dying on that date; provided however, that a person or corporation liable for the payment of the tax under this chapter that elects to determine tax pursuant to clause (ii) of subparagraph (a) of paragraph (2) of subsection a. of R.S. 54:38-1 shall file such alternate New Jersey estate tax forms as may be prescribed by the director pursuant to the requirements of that clause.
In addition to the copy or copies of the federal estate tax return, or alternate tax forms, the executor, administrator, trustee or other person or corporation shall file any other evidence, information or data that the Director of the Division of Taxation shall in the director's discretion deem necessary. For the purposes of this chapter the Director of the Division of Taxation is hereby authorized and empowered to promulgate such rules and regulations, not inconsistent with the provisions hereof, as the director shall deem necessary.
N.J.S. § 54:38-7