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

1

Enter your address

Type your street address and select your municipality from all 564 NJ towns.

2

We check state records

We query official MOD-IV tax records and compare your assessment to recent sales and comparable properties.

3

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.

Why it is worth checking

New Jersey has the highest property taxes in the country, and assessments are often years out of date. If your home is assessed above its true market value, you are overpaying, and you can appeal.

Assessment vs market value

We pull your MOD-IV parcel assessment and estimate its true market value from the county equalization ratio, so you can see the gap at a glance.

Compared to similar homes

Comparable nearby properties and your municipality percentile show whether you are assessed higher than homes like yours.

In time for the deadline

NJ tax appeals are due by April 1st. A HIGH score means it is worth filing. The check takes under a minute and costs nothing.

Frequently asked questions

All property data comes from New Jersey's MOD-IV Tax List, maintained by each county's tax board. MOD-IV is the official record of property assessments, ownership, and sales data for every parcel in New Jersey. It's the same data used by tax assessors, county boards of taxation, and the NJ Division of Taxation.

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.

Each county in NJ publishes an equalization ratio (also called the “common level range”). This ratio represents how assessments relate to true market value. We divide your total assessed value by this ratio to estimate what the county thinks your property is actually worth.
Yes. NJ Tax Check is completely free and requires no sign-up. Property tax assessments are public records and we believe every homeowner should be able to easily check if they're being overassessed.

Useful links

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.

Ready to check your assessment?

It takes 10 seconds. No sign-up required.