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2025 general tax rate · Warren County, NJ
Lopatcong Township property tax rate
Lopatcong Township's 2025 general tax rate is $3.042 per $100 of assessed value. A property assessed at $300,000 owes $9,126.00 for the year. That ranks 262nd highest of New Jersey's 564 municipalities, above the middle, $0.080 per $100 above the $2.960 per $100 state median.
- 1General tax rate $3.042 per $100
- 2Bill on $300,000 assessed $9,126.00
Your Lopatcong Township tax bill
The bill before exemptions and credits. Compare every New Jersey rate.
General rate and effective rate in Lopatcong Township
New Jersey publishes two rates for every municipality. The general tax rate, $3.042 per $100 in Lopatcong Township, is the one applied to the assessed value on the bill: $300,000 assessed owes $9,126.00. The effective tax rate, $2.410 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 Lopatcong Township's assessments at about 79.22% of market value; the state median is 70.02%.
The effective rate is the fairer comparison between towns. On it Lopatcong Township ranks 156th of 564, against 262nd on the general rate, and sits $0.270 above the $2.140 median effective rate. At 79.22%, a $300,000 assessment corresponds to roughly $378,692 of market value.
Lopatcong Township's rate in 2024 and 2025
The general tax rate rose $0.050 per $100 (1.84%) from $2.987 per $100 in 2024, and the same $300,000 assessment owes $165.00 more than at last year's rate. In 2024 Lopatcong Township ranked 269th. The effective rate went from $2.597 to $2.410 per $100 (down 7.2%), and the implied ratio from 86.94% to 79.22%: market values rose faster than assessments.
Tax on common assessed values in Lopatcong Township
| Assessed value | 2025 bill | At the 2024 rate | Versus NJ median rate |
|---|---|---|---|
| $200,000 | $6,084.00 | $5,974.00 | +$164.00 |
| $300,000 | $9,126.00 | $8,961.00 | +$246.00 |
| $400,000 | $12,168.00 | $11,948.00 | +$328.00 |
| $500,000 | $15,210.00 | $14,935.00 | +$410.00 |
| $750,000 | $22,815.00 | $22,402.50 | +$615.00 |
Each bill is the assessed value divided by 100 and multiplied by $3.042, before exemptions, credits or special charges. These are assessed values, not sale prices: at 79.22% the $300,000 row is a property worth about $378,692. The last column is the difference from the same assessment at the $2.960 per $100 state median.
How Lopatcong Township compares in Warren County and New Jersey
Among the 22 municipalities in Warren County, Lopatcong Township ranks 19th highest; the county median is $3.520 per $100, so Lopatcong Township sits $0.480 per $100 below it. The next higher rate in the county is Franklin Township (Warren County) at $3.129, and the next lower is Frelinghuysen Township at $2.858. Statewide, 53% of municipalities have a lower general tax rate than Lopatcong Township.
Outside Warren County, the closest rates are Raritan Borough ($3.042, Somerset), Frankford Township ($3.040, Sussex), Lumberton Township ($3.039, Burlington), Raritan Township ($3.029, Hunterdon). 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 Lopatcong Township assessment
New Jersey appeals go to the Warren County Board of Taxation. The petition is due April 1, or May 1 in a year when Lopatcong Township 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 79.22% ratio implied by the state's two rates, that range runs from about 67.34% to 91.1% of market value; the Director's official average ratio for Lopatcong Township, 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.
Lopatcong Township property tax questions
What is the property tax rate in Lopatcong Township, NJ?
Lopatcong Township's 2025 general tax rate is $3.042 per $100 of assessed value; its effective rate, on market value, is $2.410 per $100. Source: New Jersey Division of Taxation.
How much is the property tax on a $300,000 assessment in Lopatcong Township?
$300,000 ÷ 100 × $3.042 = $9,126.00 a year, before exemptions and credits. At the 2024 rate the same assessment owed $8,961.00.
Is Lopatcong Township's tax rate high for New Jersey?
It ranks 262nd 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 156th.
How do I appeal a Lopatcong Township 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.