Are you overpaying on
NJ property taxes?
New Jersey has the highest property tax rate in the country. Look up your assessment to see if you have grounds for a tax appeal.
Search 3.5 million NJ property records across all 21 counties
How it works
Enter your address
Type your street address and select your municipality from all 564 NJ towns.
We check state records
We query official MOD-IV tax records and compare your assessment to recent sales and comparable properties.
See your appeal score
Get a clear HIGH / MEDIUM / LOW score telling you if your assessment looks too high.
What you'll get
Tax Appeal Score
We compare your assessment to recent sales data and comparable properties to tell you if your assessment looks too high.
Comparable Analysis
See how your assessment stacks up against nearby, similar properties in your municipality.
Market Value Estimate
Get an implied market value based on the county equalization ratio and see the gap between your assessment and market reality.
Homeowners are saving thousands
NJ Tax Check has helped homeowners across the state discover they were being overassessed and take action.
“I had no idea my assessment was 30% above market value. Filed an appeal and saved $2,800 a year on my taxes.”
Maria S.
Montclair, Essex County
“The comparable analysis made it so clear. My neighbors with similar homes were assessed way lower. My attorney used the data in the appeal.”
James T.
Hoboken, Hudson County
“I almost missed the April 1st deadline. Ran my address through NJ Tax Check, got a HIGH score, and filed just in time. Best 5 minutes I ever spent.”
Priya K.
Edison, Middlesex County
Frequently asked questions
The tax appeal score compares your assessment to the implied market value and comparable properties:
- HIGH — Your assessment appears significantly above market value. Strong grounds for appeal.
- MEDIUM — Somewhat above what the data suggests. Worth exploring with a tax professional.
- LOW — Assessment appears in line with or below market value. An appeal is unlikely to succeed.
This is not legal or financial advice. Always consult a licensed tax appeal attorney or appraiser before filing.
Useful links
- NJ Division of Taxation — Official state tax authority
- Property Tax Appeal Information — How to file an appeal in NJ
- NJ Property Tax Actor on Apify — Developer API access to the underlying data
Understanding NJ Property Tax Assessments
New Jersey homeowners pay the highest property taxes in the nation, with an average annual bill exceeding $9,000. Every property in the state is assessed by the local municipal tax assessor and recorded in the MOD-IV system. These assessments are supposed to reflect market value, but in practice many properties are over- or under-assessed relative to what they would actually sell for.
The key metric is the equalization ratio (also called the common level range), published annually by each county. This ratio shows the relationship between assessed values and actual sale prices. When your assessed value divided by the equalization ratio produces a number significantly below your assessment, you may be overpaying.
Counties with historically high effective tax rates include Essex, Bergen, Passaic, and Union. However, over-assessment can happen anywhere across New Jersey's 564 municipalities and 21 counties.
If you believe your property is over-assessed, the deadline to file a tax appeal with your county board of taxation is April 1st of each year (January 15th in municipalities that have had a revaluation). You can appeal on your own or hire a tax appeal attorney. The first step is understanding where your assessment stands — and that's exactly what NJ Tax Check helps you do.
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