Any ordinance adopted pursuant to this article shall:
Any ordinance adopted pursuant to this article (C.40:48C-14 through 40:48C-19) also may require the payment of interest by an employer on delinquent payroll taxes. Payroll taxes shall be considered delinquent when the amount due to the municipality is not paid by the employer on or before the dates specified in subsection b. of this section. Any ordinance so adopted may fix the rate of interest to be charged on the delinquent payroll taxes; however, the rate so fixed shall not exceed 8% per annum on the first $1,500 of the delinquency and 18% per annum on any amount in excess of $1,500, to be calculated from the date the tax was payable until the date that actual payment to the municipality is made.
N.J.S. § 40:48C-16