Treasurer Tax Collector in Lawrence, New Jersey

The county treasurer and tax collector office serving Mountainside processes property tax payments, issues tax bills, and administers exemption programs for eligible property owners in the area. There are 2 Treasurer Tax Collector locations in Mountainside, New Jersey.

Property owners in Mountainside can use the tax collector's online portal to look up their current tax bill, make a payment, verify payment receipt, or print a paid-tax certificate — many routine tax transactions no longer require an in-person office visit.

Homeowners in Mountainside who recently purchased property, completed an addition, or experienced a significant change in their property's use should verify that their tax bill reflects accurate assessed values — contact the county assessor or tax collector if you believe your assessed value is incorrect, and file an appeal before the deadline.