Home / New Jersey / Warren County / Washington Borough
2025 general tax rate · Warren County, NJ
Washington Borough property tax rate
Washington Borough's 2025 general tax rate is $5.890 per $100 of assessed value. A property assessed at $300,000 owes $17,670.00 for the year. That ranks 29th highest of New Jersey's 564 municipalities, among the highest tenth, $2.930 per $100 above the $2.960 per $100 state median.
- 1General tax rate $5.890 per $100
- 2Bill on $300,000 assessed $17,670.00
Your Washington Borough tax bill
The bill before exemptions and credits. Compare every New Jersey rate.
General rate and effective rate in Washington Borough
New Jersey publishes two rates for every municipality. The general tax rate, $5.890 per $100 in Washington Borough, is the one applied to the assessed value on the bill: $300,000 assessed owes $17,670.00. The effective tax rate, $2.975 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 Washington Borough's assessments at about 50.51% 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 Washington Borough ranks 44th of 564, against 29th on the general rate, and sits $0.840 above the $2.140 median effective rate. At 50.51%, a $300,000 assessment corresponds to roughly $593,942 of market value.
Washington Borough's rate in 2024 and 2025
The general tax rate rose $0.300 per $100 (5.46%) from $5.585 per $100 in 2024, and the same $300,000 assessment owes $915.00 more than at last year's rate. In 2024 Washington Borough ranked 31st. The effective rate went from $3.112 to $2.975 per $100 (down 4.4%), and the implied ratio from 55.72% to 50.51%: market values rose faster than assessments.
Tax on common assessed values in Washington Borough
| Assessed value | 2025 bill | At the 2024 rate | Versus NJ median rate |
|---|---|---|---|
| $200,000 | $11,780.00 | $11,170.00 | +$5,860.00 |
| $300,000 | $17,670.00 | $16,755.00 | +$8,790.00 |
| $400,000 | $23,560.00 | $22,340.00 | +$11,720.00 |
| $500,000 | $29,450.00 | $27,925.00 | +$14,650.00 |
| $750,000 | $44,175.00 | $41,887.50 | +$21,975.00 |
Each bill is the assessed value divided by 100 and multiplied by $5.890, before exemptions, credits or special charges. These are assessed values, not sale prices: at 50.51% the $300,000 row is a property worth about $593,942. The last column is the difference from the same assessment at the $2.960 per $100 state median.
How Washington Borough compares in Warren County and New Jersey
Among the 22 municipalities in Warren County, Washington Borough ranks 1st highest; the county median is $3.520 per $100, so Washington Borough sits $2.370 per $100 above it. No municipality in the county has a higher rate, and the next lower is Oxford Township at $4.827. Statewide, 94% of municipalities have a lower general tax rate than Washington Borough.
Outside Warren County, the closest rates are Trenton ($5.890, Mercer), Bridgeton ($5.790, Cumberland), Wayne Township ($5.998, Passaic), Laurel Springs ($5.729, Camden). 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 Washington Borough 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 Washington Borough 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 50.51% ratio implied by the state's two rates, that range runs from about 42.93% to 58.09% of market value; the Director's official average ratio for Washington Borough, 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.
Washington Borough property tax questions
What is the property tax rate in Washington Borough, NJ?
Washington Borough's 2025 general tax rate is $5.890 per $100 of assessed value; its effective rate, on market value, is $2.975 per $100. Source: New Jersey Division of Taxation.
How much is the property tax on a $300,000 assessment in Washington Borough?
$300,000 ÷ 100 × $5.890 = $17,670.00 a year, before exemptions and credits. At the 2024 rate the same assessment owed $16,755.00.
Is Washington Borough's tax rate high for New Jersey?
It ranks 29th highest of 564, among the highest tenth of New Jersey municipalities; the median is $2.960 per $100. On the effective rate, which allows for different assessment levels, it ranks 44th.
How do I appeal a Washington Borough 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.