Middlesex County, New Jersey
Dunellen, N.J. Property Tax Rate 2026
Official 2025 Division of Taxation rates for Dunellen. The general rate is per $100 of assessed value. A sale price is not an assessed value.
- General tax rate
- 2.448
- Effective tax rate
- 2.399
- Equalization ratio
- 98.00%
per $100 assessed
per $100 market value
assessed ÷ market, from the two rates
Example tax bills
Approximation using the effective rate. The general rate is applied to the equalized assessment, not the sticker price.
- $500,000 market value → assessed about $489,992 → about $11,995/year
- $750,000 market value → assessed about $734,988 → about $17,993/year
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Questions about Dunellen taxes
What is the property tax rate in Dunellen, NJ?
The official 2025 general tax rate in Dunellen (Middlesex County) is 2.448 per $100 of assessed value. The effective tax rate is 2.399 per $100 of market value.
What is the effective tax rate in Dunellen?
Dunellen's effective tax rate is 2.399. That rate already converts market value into an approximate tax bill. The general rate applies only to assessed value.
How much is property tax on a $500,000 home in Dunellen?
Using the equalization ratio of 98.00%, a $500,000 market value is about $489,992 assessed. The approximate annual tax is $11,995, which is $500,000 times the effective rate of 2.399 per $100.
How do I appeal my Dunellen property assessment?
Enter your Dunellen address on this page. Garden State AI compares the assessment with recent sales under NJ Chapter 123 and, when the numbers support it, prepares the appeal packet.
Source: 2025 General Tax Rates, NJ Division of Taxation. Rates are not a legal opinion and do not include exemptions.