How to Appeal Property Taxes in New Jersey

New Jersey has the highest property taxes in the United States — the median homeowner pays $8,804 per year. This makes appeals extremely valuable: even a 10% reduction saves nearly $900 annually.

The appeal process in New Jersey is straightforward but formal. You file a Petition of Appeal with your County Board of Taxation by April 1 of each year. There's a filing fee of $25 (for properties assessed under $150,000) or $150 (for properties assessed at $150,000 or more).

Unlike many states, New Jersey's appeal is based on the assessment date of October 1 of the prior year. So a 2026 appeal challenges the value as of October 1, 2025. Your comparable sales should ideally be from around that date.

After filing, the County Board schedules a hearing (typically within 3-6 months). You present comparable sales evidence showing your assessed value exceeds market value. The Board issues a written decision.

If you disagree with the County Board's decision, you can appeal to the Tax Court of New Jersey within 45 days. For properties assessed over $1 million, you can file directly with the Tax Court (bypassing the County Board).

One important nuance: New Jersey doesn't reassess regularly. Some municipalities haven't had a revaluation in 10-30+ years. This means assessments can be wildly out of date — both over and under. When a municipality does revalue, expect a flood of appeals.

Common mistakes New Jersey homeowners make:

1. Not understanding assessment ratios — NJ uses a "ratio" system. Your assessed value is multiplied by the municipality's equalization ratio to determine true market value. Make sure you're comparing apples to apples.

1. Using comps from the wrong date — NJ values are based on October 1 of the prior year. Using sales from 6 months later weakens your case.

1. Filing too late — April 1 is an absolute deadline. No extensions.

1. Not filing because "my taxes didn't go up" — In NJ, you can appeal even if your assessment didn't change. If the market dropped and your assessment stayed the same, you're over-assessed.

1. Assuming you need a lawyer — For residential properties, you absolutely can file yourself. The County Board process is designed for homeowners.

Pro tips for New Jersey appeals:

• Check your municipality's equalization ratio (Chapter 123 ratio) on the NJ Division of Taxation website. If it's below 100%, your assessed value overstates your tax burden relative to market.

• NJ's highest-tax counties (Bergen, Essex, Passaic) also have the most experienced boards. Bring strong evidence.

• For NJ, an appraisal from a licensed appraiser (costing $300-500) can be very persuasive for high-value properties.

• Even a small reduction matters in NJ: a $20,000 reduction at a 2.5% rate = $500/year saved.

• After a municipal revaluation, you have the BEST chance to appeal because the new values are fresh and often imprecise.