Windsor, Mercer County, New Jersey Property Taxes
Property Taxes in Windsor, New Jersey
Median Windsor, New Jersey effective property tax rate: 3.12%, significantly higher than the national median of 1.02%, and higher than the New Jersey state median of 2.88%.
Median Windsor, New Jersey home value: $260,000
Median annual Windsor, New Jersey tax bill: $8,109, $5,709 higher than the national median property tax bill of $2,400.
How are property taxes in Mercer calculated?
Property taxes in Windsor, New Jersey are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding Windsor's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Windsor, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Windsor, Mercer County, New Jersey Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
3.12%
Estimate Property Tax Bill
$8,112
$7,528
How Does the Windsor Property Tax Calculator Work?
Use this Windsor property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Windsor's median effective tax rate of 3.12% — based on actual property records in Mercer County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment system uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Windsor's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Windsor's median effective property tax rate is higher than New Jersey's 2.88% median rate, and the median property tax bill is $8,109, which is $5,709 higher than the state median bill. By ZIP code, rates in Windsor are the same at 08561, where both the highest and lowest median tax bill are $8,109.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Windsor.
About Windsor Property Taxes
About Property Taxes in Windsor, Mercer, New Jersey
Windsor’s median effective property tax rate of 3.12% is higher than the New Jersey state median of 2.88% and higher than the national median of 1.02%. This rate reflects the Mercer County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Windsor. Homeowners in the 08561 ZIP code carry a median effective rate of 3.12%, while those in 08561 pay 3.12%. This spread — 0 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Mercer County. Understanding which part of Windsor you live in can make a meaningful difference to your annual tax bill.
Windsor homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the April 1, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Windsor, Mercer County, New Jersey
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Windsor's effective property tax rate to other cities in New Jersey and the median property tax rates in New Jersey and the U.S.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Windsor Tax Rate
3.12%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Mercer County Tax Rate
3.30%
Median Effective New Jersey Tax Rate
2.88%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Windsor, Mercer County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 08561 | 3.12% | 3.12% | 3.12% | 3.12% | 3.12% |
Source: Ownwell
Property Tax Assessment Values Across Windsor, Mercer County, New Jersey
When examining property taxes in Windsor, New Jersey, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. Mercer County estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Mercer County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of January.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Windsor.
For example, the median home price in Windsor is $260,000, with tax bills ranging significantly across the county. 08561 has the highest median home price at $260,000.
Property Tax Assessment Values Across Windsor, Mercer County, New Jersey
Source: Ownwell
$42,100
$567,900
$1,093,700
Median Windsor Market Value
$260,000
Median Mercer County Market Value
$217,000
Median New Jersey Market Value
$288,200
Median United States Market Value
$235,294
Property Tax Assessment Values Across Windsor, Mercer County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 08561 | $185,000 | $209,500 | $260,000 | $319,450 | $422,920 |
Source: Ownwell
Property Tax Bills Across Windsor, Mercer County, New Jersey
Property tax bills in Windsor are calculated by applying the local tax rate to a home’s assessed value, which is based on its market value and the taxing needs of Mercer County and other local jurisdictions. With a median home price of $260,000, homeowners can expect their bill to reflect both the value of the property and the rates set by schools, municipal services, and county government.
The amount owed can vary widely from home to home. In Windsor, the 25th percentile tax bill is $6,477, the 75th percentile is $9,964, and the 90th percentile reaches $13,191. The median tax bill is $8,109 in ZIP code 08561.
Because property taxes are tied to assessed value, any increase in a home’s valuation can raise the bill even if nothing about the property has changed. For homeowners, that means property taxes can become one of the largest ongoing housing costs and a major factor in the overall affordability of owning a home.
Median Windsor Tax Bill
$8,109
Median Mercer County Tax Bill
$7,344
Median New Jersey Tax Bill
$8,638
Median United States Tax Bill
$2,400
Property Tax Bills Across Windsor, Mercer County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 08561 | $5,793 | $6,477 | $8,109 | $9,964 | $13,191 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | April 1 |
Links | |
|---|---|
| Mercer Tax Assessor | |
| Website | pip.mercercounty.org |