Property Taxes in Wellesley Island, New York
Median Wellesley Island, New York effective property tax rate: 2.14%, significantly higher than the national median of 1.02%, and higher than the New York state median of 1.90%.
Median Wellesley Island, New York home value: $346,572
Median annual Wellesley Island, New York tax bill: $6,026, $3,626 higher than the national median property tax bill of $2,400.
How are property taxes in Jefferson calculated?
Property taxes in Wellesley Island, New York 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 Wellesley Island's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Wellesley Island, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Wellesley Island Property Tax Calculator Work?
Use this Wellesley Island property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Wellesley Island's median effective tax rate of 2.14% — based on actual property records in Jefferson County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment process uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Wellesley Island's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Wellesley Island: rates range from 2.14% in 13640 to 2.14% in 13640, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Wellesley Island.
About Wellesley Island Property Taxes
About Property Taxes in Wellesley Island, Jefferson, New York
Wellesley Island’s median effective property tax rate of 2.14% is higher than the New York state median of 1.90% and higher than the national median of 1.02%. This rate reflects the Jefferson County base levy combined with local school district levies and special district levies that vary by subdivision throughout the city.
Property tax rates are not uniform across Wellesley Island. Homeowners in ZIP code 13640 carry a median effective rate of 2.14%, while those in the same ZIP code pay 2.14%. This spread reflects how school district boundaries and local assessment districts are drawn across Jefferson County. Understanding which part of Wellesley Island you live in can make a meaningful difference to your annual tax bill.
Wellesley Island homeowners who believe their assessed value is too high can file a formal appeal with the Assessment Review Commission before May 26, 2026.
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 Wellesley Island, Jefferson County, New York
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 Wellesley Island's effective property tax rate to other cities in New York and the median property tax rates in New York and the U.S.
Property Tax Rates Across Wellesley Island, Jefferson County, New York
Source: Ownwell
1.05%
1.72%
2.39%
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 Wellesley Island Tax Rate
2.14%
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 Jefferson County Tax Rate
1.66%
Median Effective New York Tax Rate
1.90%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Wellesley Island, Jefferson County, New York
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 13640 | 1.40% | 1.40% | 2.14% | 2.23% | 2.23% |
Source: Ownwell
Property Tax Assessment Values Across Wellesley Island, Jefferson County, New York
When examining property taxes in Wellesley Island, New York, 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. The Jefferson County tax authority 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 Jefferson County are sent in the spring each year and typically reach mailboxes by the middle of the season. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of the property tax bill.
For example, the median home price in Wellesley Island is $346,572, with a median property tax bill of $6,026. ZIP code 13640 has the highest median home price at $346,572. This is well above the national median property tax bill of $2,400.
Property Tax Assessment Values Across Wellesley Island, Jefferson County, New York
Source: Ownwell
$36,585
$315,168
$593,750
Median Wellesley Island Market Value
$346,572
Median Jefferson County Market Value
$160,549
Median New York Market Value
$312,500
Median United States Market Value
$274,101
Property Tax Assessment Values Across Wellesley Island, Jefferson County, New York
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 13640 | $109,756 | $203,738 | $346,572 | $518,992 | $773,523 |
Source: Ownwell
Property Tax Bills Across Wellesley Island, Jefferson County, New York
Property tax bills in Wellesley Island are calculated from the assessed value of a home, which is based on its market value and the local tax rate set by Jefferson County and other taxing authorities. When a home’s assessed value rises, the tax bill can increase as well, even if the homeowner has not made any changes to the property. The median home price is $346,572, and the median tax bill is $6,026, which is well above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%.
Several factors affect the final bill, including the home’s assessed value, local levies, and whether the property qualifies for exemptions. Bills in the area vary widely, with the 25th percentile at $3,318 and the 75th percentile at $10,636, showing how much location and valuation can influence what homeowners pay. For many homeowners, this means property taxes can be a major ongoing housing cost.
Property Tax Bills Across Wellesley Island, Jefferson County, New York
Source: Ownwell
$519
$4,655
$8,791
Median Wellesley Island Tax Bill
$6,026
Median Jefferson County Tax Bill
$2,930
Median New York Tax Bill
$5,420
Median United States Tax Bill
$3,209
Property Tax Bills Across Wellesley Island, Jefferson County, New York
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 13640 | $1,782 | $3,318 | $6,026 | $10,636 | $16,183 |
Source: Ownwell
Don't miss the deadline to file a grievance!
Dates | |
|---|---|
| Appeal Deadline | May 26 |
Links | |
|---|---|
| Jefferson Assessment Review Commission | |
| Website | jefferson.sdgnys.com |