New Jersey Statutes Title 54. Taxation 54 § 34-1.1

A transfer of property by deed, grant, bargain, sale or gift wherein the transferor is entitled to some income, right, interest or power, either expressly or by operation of law, shall not be deemed a transfer intended to take effect at or after transferor's death if the transferor, more than 3 years prior to death, shall have executed an irrevocable and complete disposition of all reserved income, rights, interests and powers in and over the property transferred.