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2025 general tax rate · Middlesex County, NJ
South Amboy property tax rate
South Amboy's 2025 general tax rate is $3.217 per $100 of assessed value. A property assessed at $300,000 owes $9,651.00 for the year. That ranks 228th highest of New Jersey's 564 municipalities, above the middle, $0.260 per $100 above the $2.960 per $100 state median.
- 1General tax rate $3.217 per $100
- 2Bill on $300,000 assessed $9,651.00
Your South Amboy tax bill
The bill before exemptions and credits. Compare every New Jersey rate.
General rate and effective rate in South Amboy
New Jersey publishes two rates for every municipality. The general tax rate, $3.217 per $100 in South Amboy, is the one applied to the assessed value on the bill: $300,000 assessed owes $9,651.00. The effective tax rate, $2.056 per $100, is "the general property tax adjusted by the municipality's equalization ratio", the rate on market value. Dividing one by the other puts South Amboy's assessments at about 63.91% of market value, well below market value, the sign of a town that has not revalued recently; the state median is 70.02%.
The effective rate is the fairer comparison between towns. On it South Amboy ranks 322nd of 564, against 228th on the general rate, and sits $0.080 below the $2.140 median effective rate. At 63.91%, a $300,000 assessment corresponds to roughly $469,410 of market value.
South Amboy's rate in 2024 and 2025
The general tax rate rose $0.010 per $100 (0.25%) from $3.209 per $100 in 2024, and the same $300,000 assessment owes $24.00 more than at last year's rate. In 2024 South Amboy ranked 226th. The effective rate went from $2.210 to $2.056 per $100 (down 6.97%), and the implied ratio from 68.87% to 63.91%: market values rose faster than assessments.
Tax on common assessed values in South Amboy
| Assessed value | 2025 bill | At the 2024 rate | Versus NJ median rate |
|---|---|---|---|
| $200,000 | $6,434.00 | $6,418.00 | +$514.00 |
| $300,000 | $9,651.00 | $9,627.00 | +$771.00 |
| $400,000 | $12,868.00 | $12,836.00 | +$1,028.00 |
| $500,000 | $16,085.00 | $16,045.00 | +$1,285.00 |
| $750,000 | $24,127.50 | $24,067.50 | +$1,927.50 |
Each bill is the assessed value divided by 100 and multiplied by $3.217, before exemptions, credits or special charges. These are assessed values, not sale prices: at 63.91% the $300,000 row is a property worth about $469,410. The last column is the difference from the same assessment at the $2.960 per $100 state median.
How South Amboy compares in Middlesex County and New Jersey
Among the 25 municipalities in Middlesex County, South Amboy ranks 14th highest; the county median is $3.558 per $100, so South Amboy sits $0.340 per $100 below it. The next higher rate in the county is Helmetta at $3.558, and the next lower is Perth Amboy at $3.178. Statewide, 59% of municipalities have a lower general tax rate than South Amboy.
Outside Middlesex County, the closest rates are New Hanover Township ($3.220, Burlington), Mansfield Township (Burlington County) ($3.222, Burlington), Hackensack ($3.209, Bergen), Haworth ($3.225, Bergen). Because towns assess at different shares of market value, the effective rate is the better guide to what a house of a given price pays.
Appealing a South Amboy assessment
New Jersey appeals go to the Middlesex County Board of Taxation. The petition is due April 1, or May 1 in a year when South Amboy implemented a municipal-wide revaluation or reassessment (NJ Division of Taxation). Property assessed above $1,000,000 may go directly to the Tax Court, and a County Board judgment can be appealed to the Tax Court within 45 days. The Board tests the assessment against the common level range: the average ratio plus or minus 15%. Using the 63.91% ratio implied by the state's two rates, that range runs from about 54.32% to 73.5% of market value; the Director's official average ratio for South Amboy, which the County Board applies, can differ slightly.
The New Jersey appeal page sets out each step with its source and the ratio arithmetic. This is a summary of the published procedure, not legal advice.
South Amboy property tax questions
What is the property tax rate in South Amboy, NJ?
South Amboy's 2025 general tax rate is $3.217 per $100 of assessed value; its effective rate, on market value, is $2.056 per $100. Source: New Jersey Division of Taxation.
How much is the property tax on a $300,000 assessment in South Amboy?
$300,000 ÷ 100 × $3.217 = $9,651.00 a year, before exemptions and credits. At the 2024 rate the same assessment owed $9,627.00.
Is South Amboy's tax rate high for New Jersey?
It ranks 228th highest of 564, above the middle of New Jersey municipalities; the median is $2.960 per $100. On the effective rate, which allows for different assessment levels, it ranks 322nd.
How do I appeal a South Amboy property assessment?
Petition to the County Board of Taxation: by April 1 (May 1 after a municipal-wide revaluation) (NJ Division of Taxation; Guide to Tax Appeal Hearings). Then: county board hearing and judgment (Set by the County Board); appeal to the tax court (Within 45 days of the County Board's judgment).
Source: New Jersey Division of Taxation, 2025 General Tax Rates (general and effective tax rates by county and municipality); prior year from the 2024 General Tax Rates. Appeal steps: NJ Division of Taxation, Assessment and Appeals (updated August 15, 2025); NJ Division of Taxation, A Guide to Tax Appeal Hearings (revised 2022). Last checked October 21, 2026. This page explains published figures; it is not tax or legal advice.