New Jersey Statutes Title 40. Municipalities and Counties 40 § 48B-15

The governing bodies of the participating municipalities shall, by agreement, provide for the appointment of a joint municipal tax assessor and other necessary personnel, for the apportionment of the costs and expenses of operation of such office among the participating municipalities, for the addition of other municipalities in the same county and such other terms and conditions as may be necessary and convenient for the establishment and maintenance of the office. The apportionment of costs and expenses may be based upon “apportionment valuations” determined under Revised Statutes 54:4-49, number of taxable properties, population, budgets, and such other factor or factors, or any combination thereof, as may be provided in the agreement. The agreement shall be subject to approval by resolution of the governing bodies of each of the municipalities prior to its execution by such official or officials as may be authorized to execute such agreement. A copy of every pertinent resolution, agreement and every amendment thereto shall be filed with the Director of the Division of Taxation in the Department of the Treasury and the Director of the Division of Local Finance in the Department of Community Affairs.