N.J. Stat. § 54:5-54
Except as hereinafter provided, the owner, his heirs, holder of any prior outstanding tax lien certificate, mortgagee, or occupant of land sold for municipal taxes, assessment for benefits pursuant to R.S. 54:5-7 or other municipal charges, may redeem it at any time until the right to redeem has been cut off in the manner in this chapter set forth, by paying to the collector, or to the collector of delinquent taxes on lands of the municipality where the land is situate, for the use of the purchaser, his heirs or assigns, the amount required for redemption as hereinafter set forth.
The tax collector shall provide to any party entitled to redeem a certificate pursuant to this section two calculations of the amount required for redemption within a calendar year at no cost. The governing body of a municipality may, by ordinance, require a fee not to exceed $50 for each subsequent calculation requested of the tax collector. A request for a redemption calculation shall be made in writing to the tax collector.
N.J.S. § 54:5-54