Princeton, NJ

• InstallmentsFeb 1 · May 1 · Aug 1 · Nov 1
• Next dueFeb 1, 2027
• Last day without interestFeb 10, 2027

Deadline. Appeals to the county board of taxation must be received on or before April 1, or 45 days after the bulk mailing of the assessment notices is completed in the town, whichever is later. In a town that implemented a municipal-wide revaluation or reassessment, the deadline is May 1. A deadline on a weekend or legal holiday moves to the next business day.

Next regular deadline: Apr 1, 2027. Properties assessed over $1,000,000 may file directly with the NJ Tax Court by the same deadline.

File with the Mercer County Board of Taxation. Website · 640 S. Broad Street, Room 317, Trenton, NJ 08650 · 609-989-6704 · Office hours: Appeals accepted 8:30 AM-4:00 PM (board page)

Fax: 609-396-4510

Paper: Form A-1 filed with the board at the Trenton address. Deadline time: Appeals accepted until 4:00 PM (board page hours). Payment: Check payable to County Tax Administrator (per state A-1 instructions). Form: Petition of Appeal Form A-1. Filer must serve copies on the town assessor and clerk (A-1 instructions).

Filing fee by assessed value: under $150,000: $5; $150,000 to under $500,000: $25; $500,000 to under $1,000,000: $100; $1,000,000 or more: $150; classification appeal: $25. Payable to the County Tax Administrator; not refundable. Statewide fee schedule on Form A-1. The Mercer board's page does not state county-specific fees.

Taxes and municipal charges must be paid through Q1 of the current year or the appeal can be dismissed (N.J.S.A. 54:3-27).