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2025 general tax rate · Morris County, NJ
Mendham Township property tax rate
Mendham Township's 2025 general tax rate is $1.839 per $100 of assessed value. A property assessed at $300,000 owes $5,517.00 for the year. That ranks 462nd highest of New Jersey's 564 municipalities, in the lowest quarter, $1.120 per $100 below the $2.960 per $100 state median.
- 1General tax rate $1.839 per $100
- 2Bill on $300,000 assessed $5,517.00
Your Mendham Township tax bill
The bill before exemptions and credits. Compare every New Jersey rate.
General rate and effective rate in Mendham Township
New Jersey publishes two rates for every municipality. The general tax rate, $1.839 per $100 in Mendham Township, is the one applied to the assessed value on the bill: $300,000 assessed owes $5,517.00. The effective tax rate, $1.785 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 Mendham Township's assessments at about 97.06% of market value; the state median is 70.02%.
The effective rate is the fairer comparison between towns. On it Mendham Township ranks 420th of 564, against 462nd on the general rate, and sits $0.360 below the $2.140 median effective rate. At 97.06%, a $300,000 assessment corresponds to roughly $309,087 of market value.
Mendham Township's rate in 2024 and 2025
The general tax rate fell $0.100 per $100 (5.3%) from $1.942 per $100 in 2024, and the same $300,000 assessment owes $309.00 less than at last year's rate. In 2024 Mendham Township ranked 455th. The effective rate went from $1.951 to $1.785 per $100 (down 8.51%), and the implied ratio from 100.46% to 97.06%: market values rose faster than assessments.
Tax on common assessed values in Mendham Township
| Assessed value | 2025 bill | At the 2024 rate | Versus NJ median rate |
|---|---|---|---|
| $200,000 | $3,678.00 | $3,884.00 | −$2,242.00 |
| $300,000 | $5,517.00 | $5,826.00 | −$3,363.00 |
| $400,000 | $7,356.00 | $7,768.00 | −$4,484.00 |
| $500,000 | $9,195.00 | $9,710.00 | −$5,605.00 |
| $750,000 | $13,792.50 | $14,565.00 | −$8,407.50 |
Each bill is the assessed value divided by 100 and multiplied by $1.839, before exemptions, credits or special charges. These are assessed values, not sale prices: at 97.06% the $300,000 row is a property worth about $309,087. The last column is the difference from the same assessment at the $2.960 per $100 state median.
How Mendham Township compares in Morris County and New Jersey
Among the 39 municipalities in Morris County, Mendham Township ranks 34th highest; the county median is $2.538 per $100, so Mendham Township sits $0.700 per $100 below it. The next higher rate in the county is Riverdale at $1.901, and the next lower is Morristown at $1.760. Statewide, 18% of municipalities have a lower general tax rate than Mendham Township.
Outside Morris County, the closest rates are Cranbury Township ($1.836, Middlesex), Union City ($1.848, Hudson), Upper Freehold Township ($1.848, Monmouth), North Bergen Township ($1.828, Hudson). 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 Mendham Township assessment
New Jersey appeals go to the Morris County Board of Taxation. The petition is due April 1, or May 1 in a year when Mendham 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 97.06% ratio implied by the state's two rates, that range runs from about 82.5% to 111.62% of market value; the Director's official average ratio for Mendham 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.
Mendham Township property tax questions
What is the property tax rate in Mendham Township, NJ?
Mendham Township's 2025 general tax rate is $1.839 per $100 of assessed value; its effective rate, on market value, is $1.785 per $100. Source: New Jersey Division of Taxation.
How much is the property tax on a $300,000 assessment in Mendham Township?
$300,000 ÷ 100 × $1.839 = $5,517.00 a year, before exemptions and credits. At the 2024 rate the same assessment owed $5,826.00.
Is Mendham Township's tax rate high for New Jersey?
It ranks 462nd highest of 564, in the lowest quarter of New Jersey municipalities; the median is $2.960 per $100. On the effective rate, which allows for different assessment levels, it ranks 420th.
How do I appeal a Mendham 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.