Oyster Bay, Nassau County, New York Property Taxes
Property Taxes in Oyster Bay, New York
Median Oyster Bay, New York effective property tax rate: 0.90%, significantly lower than the national median of 1.02%, and lower than the New York state median of 1.90%.
Median Oyster Bay, New York home value: $724,000
Median annual Oyster Bay, New York tax bill: $5,349, $2,949 higher than the national median property tax bill of $2,400.
How are property taxes in Nassau calculated?
Property taxes in Oyster Bay, 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 Oyster Bay's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Oyster Bay, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Oyster Bay, Nassau County, New York Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.9%
Estimate Property Tax Bill
$6,516
$6,047
$774
Average Annual Tax Savings
How Does the Oyster Bay Property Tax Calculator Work?
Use this Oyster Bay property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Oyster Bay's median effective tax rate of 0.90% — based on actual property records in Nassau County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Oyster Bay'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 Oyster Bay: rates range from 0.90% in 11771 to 0.90% in 11771, primarily due to differences in school district levies and local assessment districts. Oyster Bay's median property tax rate is lower than the 1.90% state median, and the $5,349 median tax bill is $2,949 higher than the state median.
If your estimate is higher than expected, Ownwell can appeal your Oyster Bay assessment — you only pay if we save you money.
About Oyster Bay Property Taxes
About Property Taxes in Oyster Bay, Nassau, New York
Oyster Bay’s median effective property tax rate of 0.90% is lower than the New York state median of 1.90% and lower than the national median of 1.02%. This rate reflects the Nassau 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 Oyster Bay. Homeowners in the 11771 ZIP code carry a median effective rate of 0.90%, while those in the same ZIP code pay 0.90%. This spread reflects how school district boundaries and local assessment districts are drawn across Nassau County. Understanding which part of Oyster Bay you live in can make a meaningful difference to your annual tax bill.
Oyster Bay homeowners who believe their assessed value is too high can file a formal appeal with the Assessment Review Commission before the March 31, 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 Oyster Bay, Nassau 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 Oyster Bay's effective property tax rate to other cities in New York and the median property tax rates in New York 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 Oyster Bay Tax Rate
0.90%
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 Nassau County Tax Rate
0.71%
Median Effective New York Tax Rate
1.90%
Median Effective United States Tax Rate
1.02%
Oyster Bay, New York vs Similar New York Cities
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 Hempstead Tax Rate
0.26%
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 Islip Tax Rate
2.24%
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 New York Tax Rate
5.03%
Property Tax Rates Across Oyster Bay, Nassau County, New York
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 11771 | 0.23% | 0.28% | 0.90% | 1.09% | 1.13% |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Assessment Values Across Oyster Bay, Nassau County, New York
When examining property taxes in Oyster Bay, 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 Nassau County assessment office 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 Nassau County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month.
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 Oyster Bay.
For example, the median home price in Oyster Bay is $724,000, with tax bills ranging significantly across the county. 11771 has the highest median home price at $724,000.
Property Tax Assessment Values Across Oyster Bay, Nassau County, New York
Source: Ownwell
$351,000
$2,146,500
$3,942,000
Median Oyster Bay Market Value
$724,000
Median Nassau County Market Value
$518,000
Median New York Market Value
$312,500
Median United States Market Value
$235,294
Oyster Bay, New York vs Similar New York Cities
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 Hempstead Market Value
$351,000
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 Islip Market Value
$549,296
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 New York Market Value
$5,128,000
Property Tax Assessment Values Across Oyster Bay, Nassau County, New York
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 11771 | $452,550 | $542,000 | $724,000 | $1,267,000 | $1,930,000 |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Bills Across Oyster Bay, Nassau County, New York
Property tax bills in Oyster Bay are based on the assessed value of a home and the local tax rate, so a higher assessed value can mean a higher bill. For homeowners, that means the amount owed can rise when market conditions or assessments increase, even if the home has not changed. With a median home price of $724,000, property tax bills can be substantial, and the local burden is often higher than the national median property tax bill of $2,400.
In Oyster Bay, the 25th percentile tax bill is $3,903, the 75th percentile is $6,713, and the 90th percentile is $8,469, showing how much bills can vary from one homeowner to another. The highest and lowest median tax bill in the area is $5,349 in ZIP code 11771.
Ownwell can help homeowners lower their property tax bills by reviewing assessments, identifying opportunities to appeal, and helping uncover exemptions that may reduce what they owe.
Median Oyster Bay Tax Bill
$5,349
Median Nassau County Tax Bill
$3,634
Median New York Tax Bill
$5,420
Median United States Tax Bill
$2,400
Oyster Bay, New York vs Similar New York Cities
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 Hempstead Tax Bill
$896
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 Islip Tax Bill
$12,013
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 New York Tax Bill
$16,951
Property Tax Bills Across Oyster Bay, Nassau County, New York
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 11771 | $2,731 | $3,903 | $5,349 | $6,713 | $8,469 |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Don't miss the deadline to file a grievance!
Dates | |
|---|---|
| Appeal Deadline | March 31 |
Links | |
|---|---|
| Nassau Assessment Review Commission | |
| Website | lrv.nassaucountyny.gov |