N.J. Stat. § 49:2B-20
Should the State Treasurer, by December 31 of any year, deem it necessary, because of insufficiency of funds to be collected from the sources of revenues as provided in this act, to meet the interest and principal payments for the year after the ensuing year, then the State Treasurer shall certify to the Comptroller of the Treasury the amount necessary to be raised by taxation for those purposes, the amount to be assessed, levied and collected for and in the ensuing calendar year. In that case the Comptroller of the Treasury shall, on or before March 1 following, calculate the amount in dollars to be assessed, levied and collected in each county. That calculation shall be based upon the corrected assessed valuation of the county for the year preceding the year in which the tax is to be assessed, but the tax shall be assessed, levied and collected upon the assessed valuation of the year in which the tax is assessed and levied. The Comptroller of the Treasury shall certify that amount to the county board of taxation and the county treasurer of each county. The county board of taxation shall include the proper amount in the current tax levy of the several taxing districts of the county in proportion to the ratables as ascertained for the current year.
N.J.S. § 49:2B-20