How NJ Property Taxes Work: Assessments, Equalization and Tax Rates
The short answer: A New Jersey property tax bill is the town's general tax rate times the property's assessed value. The rate comes from dividing what the town, county and schools need to raise by the total assessed value of all taxable property (NJ Division of Taxation). Assessments are supposed to reflect market value as of October 1 of the year before the tax year. Because many towns haven't revalued recently, the state also publishes ratios and "effective" rates so you can compare towns fairly.
Buyers ask about taxes all the time, and the numbers are easy to misread. Here's how the system works.
What is the assessed value based on?
New Jersey's property tax is an ad valorem tax, a tax by value. The standard is "true value," meaning market value: what a willing, informed buyer would pay a willing, informed seller in a fair sale as of the October 1 pretax-year assessment date. Qualified farmland is the exception and is valued on its agricultural productivity (NJ Division of Taxation).
By law, each county board of taxation sets the percentage of true value used for assessments, and all 21 NJ counties have chosen 100% (Division of Taxation revaluation brochure; N.J.S.A. 54:4-2.26).
How is the tax rate set?
County, municipal and school budgets decide how much must be raised. The town's general tax rate is that total divided by the total assessed value of its taxable property. Each owner's bill is the rate times their assessed value. NJ follows "home rule": the State doesn't make local budgets and doesn't receive any of the property taxes collected (NJ Division of Taxation).
The Division's own example (Statistical Information):
| Step | Figure |
|---|---|
| Assessed value | 150,000 |
| × General tax rate | .03758 |
| = Tax bill | 5,637 |
What's the difference between the general and effective tax rate?
This trips up a lot of buyers and new agents.
- The general tax rate is the multiplier used to compute the actual bill.
- The effective tax rate is a comparison statistic. It assumes every town is assessed at 100% of market value so you can compare one town with another. The Division says plainly that it is not used to compute a tax bill (Statistical Information).
So a town with a high general rate isn't necessarily more expensive. Its assessments may simply be low compared with current prices.
Why don't assessments match today's prices?
Markets move every year, but town-wide assessment updates happen through a revaluation or reassessment. To measure the gap, the state compares assessments with actual sale prices.
The Division's example: a home assessed at $200,000 that sells for $250,000 has an assessment-to-sales ratio of 80%. The town-wide average is called the Director's Ratio, and a ratio of 85% or less signals noncompliance with the true value standard. A revaluation is done by a professional appraisal firm the town hires (revaluation brochure).
For a rough market-value reading of an assessment, divide the assessed value by the town's ratio. A $300,000 assessment in a town at an 80% ratio suggests about $375,000 of market value under that ratio. That is a statistical estimate, not an appraisal.
What does "equalization" do?
Equalization makes sure each taxing district as a whole carries its fair share. Equalized values are used to split county costs among towns, as part of the school aid formula, and to divide costs for school districts covering more than one town. The state builds them through assessment-sales ratio studies (NJ Division of Taxation). The yearly Table of Equalized Valuations is published on the Statistical Information page. The 2026 table was certified October 1, 2026 for tax year 2027 (Statistical Information).
When are NJ property taxes due?
For the calendar tax year, the statute sets four installments: February 1, May 1, August 1 and November 1. The first two are each generally a quarter of the prior year's total tax. The August and November payments are the current year's full tax minus the first two, split equally (N.J.S.A. 54:4-66). Because of that formula, the August and November bills are where a new year's rate shows up.
What happens when a house is built or improved mid-year?
If a new building or improvement is finished after the October 1 assessment date, the assessor makes an added assessment for the months left in the year. The extra assessed value is prorated by the whole months remaining, divided by 12 (N.J.S.A. 54:4-63.3). Buyers of new construction can be surprised by a bill for the period after they close, so it's worth explaining up front.
Where can you look up official numbers?
The Division's Statistical Information page publishes general and effective tax rates by town, average residential figures, equalization tables and ratio history. It also links to MODIV property assessment lists. For questions about a specific property, contact the town's tax assessor. For other market sources, see our guide to NJ housing market data sources.
Property taxes also affect what a buyer can afford, because they're part of the monthly payment. See how mortgage rates affect NJ buyers, closing cost vocabulary and working with first-time buyers. Tax calculations also show up on the licensing exam; see NJ exam math.
Appeals and property tax relief programs have their own rules and deadlines, so check the Division of Taxation directly before advising anyone.
If you're starting your licensing path, Business Elementary's 75-hour pre-licensing course is the place to begin.
Sources
- NJ Division of Taxation, How My Property is Valued (last updated 08/12/25): https://www.nj.gov/treasury/taxation/lpt/genlpt.shtml
- NJ Division of Taxation, Property Administration Statistical Information: https://www.nj.gov/treasury/taxation/lpt/statdata.shtml
- NJ Division of Taxation, revaluation brochure (Rev 3/17/16): https://www.nj.gov/treasury/taxation/pdf/lpt/revaluationbrochure.pdf
- N.J.S.A. 54:4-2.26, 54:4-66 and 54:4-63.3 (via Justia): https://law.justia.com/codes/new-jersey/title-54/
Last reviewed: October 30, 2026
Frequently Asked Questions
How is a NJ property tax bill calculated?
The town's general tax rate multiplied by the property's assessed value (NJ Division of Taxation).
Should I compare towns using the general tax rate?
Not by itself. The effective tax rate adjusts for assessment levels so towns can be compared, but it isn't used to compute a bill (Statistical Information).
What date are NJ assessments based on?
Market value as of October 1 of the pretax year (NJ Division of Taxation).
What is the Director's Ratio?
The town's average assessment-to-sales ratio. A ratio of 85% or less signals noncompliance with the true value standard (revaluation brochure).
Does the State of New Jersey keep any property tax money?
No. Property taxes fund county, municipal and school budgets, and the State receives none of the taxes collected (NJ Division of Taxation).