How New Jersey Property Taxes Work — and How to Check a Home's Tax Bill

Here are New Jersey property taxes explained in one sentence: a home's bill is its assessed value multiplied by the town's general tax rate, which is expressed per $100 of assessed value (NJ Division of Taxation statistics). County, municipal and school budget costs determine how much property tax is raised, and the State receives none of the money collected (NJ Division of Taxation). To check property taxes on a specific New Jersey home, look up its assessment in the NJ Assessment Records Search, apply the town's rate, then confirm the actual bill with the local tax collector. Buying your first home? See first-time home buyer help in Rahway and Union County.

Below, I use Rahway, where I sell most of my homes, as the worked example, with every figure from an official source.

How a New Jersey property tax bill is calculated

New Jersey's property tax is an "ad valorem" tax, meaning a tax according to value. All real property except qualified farmland is assessed against the same standard, "true value," or market value, as of the October 1 assessment date in the year before the tax year (Division of Taxation).

The rate is simple division: the total a town needs to raise for local budget expenses, divided by the total assessed value of all its taxable property. Your tax is that rate times your assessed value (Division of Taxation).

A worked example: Rahway, 2025

Rahway's 2025 general tax rate was 7.584, or $7.584 per $100 of assessed value (2025 General Tax Rates). The State's 2025 statistics put the average Rahway residential assessment at $137,596 and the average residential tax bill at $10,435 (2025 Average Residential Statistics):

$137,596 ÷ 100 × 7.584 ≈ $10,435

For context, the statewide average residential bill in that same table was $10,340.

Where the money goes

Union County's certified 2025 Abstract of Ratables breaks Rahway's average residential tax bill down by purpose (Union County Abstract of Ratables, 2025):

The county's total lands within a dollar of the State's figure.

Why you can't compare tax rates town to town

All 21 New Jersey counties have set the assessment standard at 100% of true value (Division of Taxation). In practice, assessments are generally set in one year and carried over to later years, so as the housing market changes, they fall out of step with market value (Division revaluation guide).

The State measures that gap. For tax year 2026 appeals, it certified Rahway's average ratio of assessed value to true value at 27.88% (as amended by the Tax Court) (Chapter 123 certification, 2026), down from 33.75% for tax year 2025 (Chapter 123 certification, 2025). In other words, the State's study found Rahway assessments averaged a little over a quarter of market value.

That is why the general rate misleads when you compare towns (2025 General Tax Rates):

Woodbridge's general rate is higher, yet its effective rate is lower. The effective tax rate assumes every district is valued at 100%, so it is the one built for comparing towns; the Division notes it is not used to compute a tax bill (Division of Taxation statistics).

How to check property taxes on a New Jersey home, step by step

1. Look up the assessment. Use the NJ Assessment Records Search, linked from the Union County Board of Taxation. Choose the "Current Owners/Assmt List," select the municipality (Rahway is listed), and search by address, owner name, or block and lot. For a home in another county, the State's County Boards of Taxation directory lists each board's contact details and website.
2. Find the town's rate. The Division publishes General Tax Rates for every district; as of this writing, the latest table is for 2025 (Statistical Information).
3. Do the math. Assessment ÷ 100 × general tax rate gives a ballpark annual figure. Properties inside a special improvement district also carry that district's rate; Union County lists Rahway's 2025 special improvement district rate as 0.187 per $100 (Union County tax rates).
4. Confirm the real bill. In Rahway, the Tax Collector (732-827-2050) answers questions about your tax bill and the Tax Assessor (732-827-2030) answers questions about your assessment.
5. Ask what may change. New construction, structural additions and improvements completed during the tax year can bring an added assessment (How Property is Valued). If a home was recently built or expanded, ask whether the bill reflects it.

Once you have the real number, enter it in the property tax field of our mortgage calculator instead of a guess.

When bills are due

New Jersey's statutory property tax due dates are February 1, May 1, August 1 and November 1. When a bill is mailed after the statutory mailing date, payment is due on the latest of the regular due date, any grace period, or 25 calendar days after mailing, and payments received after that date accrue interest from the statutory due date (NJ DCA guide). In Rahway this year, the Tax Collector's page said the new tax bill would be mailed the first week of September, with taxes due September 25, 2026, and payments after that date incur interest back to August 1, 2026 (Rahway Tax Collector).

If you think your assessment is too high

You appeal the value, not the tax, and must show the property's market value as of October 1 of the pretax year (Form A-1 instructions). The taxpayer must prove the assessment doesn't fairly represent either the true market value standard or the common level range standard (Assessment and Appeals); Union County's appeal packet notes that the current assessment is presumed correct (Union County Tax Appeal Filing Packet).

• Where: any owner may appeal to the County Board of Taxation; if the assessment exceeds $1,000,000, the owner may instead file directly with the Tax Court (Division of Taxation).
• When: the board must receive the petition by April 1, or 45 days after the town completes its bulk mailing of assessment notices, whichever is later (Form A-1). Where a municipal-wide revaluation or reassessment was implemented, the deadline is May 1 (Division of Taxation). In Union County, paper appeals must be physically in the office by 4 p.m. on the deadline, and a postmark isn't enough (Union County appeal rules); appeals filed through the county's online system are accepted until 11:59 p.m. that day (Union County packet).
• Who and cost: in Union County, an appeal may be filed by the owner or taxpayer or by a licensed attorney; real estate agents and appraisers may not file or sign an appeal for you. The county also warns that an appeal can be dismissed if taxes and municipal charges aren't paid through the first quarter (Union County packet). Filing fees for a valuation appeal run from $5 to $150, depending on the assessed value (Form A-1).
• The range: for tax year 2026, Rahway's common level range runs from 23.70% to 32.06%, which is 15% either side of its average ratio (Chapter 123 certification; Assessment and Appeals).
• Added or omitted assessments: these are appealed on Form AA-1 (Division of Taxation). In Union County they're due by December 1 at 4 p.m., or within 30 days after the tax collector mails the bill (Union County).

Under the Property Taxpayer Bill of Rights, you have the right, in the context of a property tax appeal, to view the property record cards of other real property in the municipality. Union County's board is in Westfield (908-527-4775); Middlesex County's is in New Brunswick (732-296-8936) (County Boards of Taxation).

Property tax relief worth knowing about

The State's Fiscal Year 2027 budget provides benefits for three programs, ANCHOR, Stay NJ and Senior Freeze, and the deadline for the 2025 application is November 2, 2026. Eligibility rules, income limits and benefits are subject to appropriation in the State budget (Property Tax Relief Programs).

• ANCHOR: for 2025, homeowners with 2025 income of $150,000 or less receive $1,500, and those with $150,001 to $250,000 receive $1,000; renters with income up to $150,000 receive $450, or $700 if 65 or older by December 31, 2025 (ANCHOR benefits). The Division filed ANCHOR automatically for most eligible homeowners under 65 and most eligible renters; applicants 65 or older and Social Security or Railroad Retirement disability recipients file Form PAS-1 (Division of Taxation).
• Stay NJ: for homeowners who were 65 or older during 2025, owned and lived in their home for all 12 months of 2025, and had income of $200,000 or less. For the 2025 tax-year application, the maximum annualized benefit is $6,500, $5,000 or $4,000 depending on income, paid in 2027 (Stay NJ).
• Senior Freeze: reimburses eligible senior citizens and disabled persons for property tax increases on their main home (Senior Freeze). Among other requirements, you must have owned and lived in the home since December 31, 2022 or earlier, with total income of $168,268 or less for 2024 and $172,475 or less for 2025 (Senior Freeze eligibility).
• Local deductions: your municipality manages the $250 Property Tax Deduction for Senior Citizens and Disabled Persons, the $250 Veteran Property Tax Deduction and the 100% Disabled Veteran Property Tax Exemption (Deductions, Exemptions and Abatements); ask your tax assessor about eligibility.

Applicants may need property details from their tax bill or tax collector, such as the Block/Lot/Qualifier and tax amounts (Division of Taxation), and the total of all these benefits can't exceed the property taxes paid on your main home for the same year (ANCHOR program).

Considering a home in Rahway or a nearby Union or Middlesex County town? I'm glad to pull the assessment and tax history for any property on your list, in English or Spanish. Contact Angela, or browse homes for sale in Union and Middlesex County.

Educational information only, not legal, tax or financial advice. Figures reflect official sources as reviewed in September 2026 and can change; confirm details with your municipal tax office, county board of taxation or a qualified professional. Angela Becerra is a New Jersey real estate licensee (License #1970190) affiliated with Prominent Properties Sotheby's International Realty. Equal Housing Opportunity.

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