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Syosset, Nassau County, New York Property Taxes

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Property Taxes in Syosset, New York

  • Median Syosset, New York effective property tax rate: 0.82%, significantly lower than the national median of 1.02%, and lower than the New York state median of 1.90%.

  • Median Syosset, New York home value: $691,000

  • Median annual Syosset, New York tax bill: $5,347, $2,947 higher than the national median property tax bill of $2,400.

How are property taxes in Nassau calculated?

Property taxes in Syosset, 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 Syosset's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Syosset, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Syosset, Nassau County, New York Property Tax Bill Calculator

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

0.82%

Estimate Property Tax Bill

$5,666

$5,258

SAVE WITH OWNWELL

$774

Average Annual Tax Savings

How Does the Syosset Property Tax Calculator Work?

Use this Syosset property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Syosset's median effective tax rate of 0.82% — 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 Syosset'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 Syosset: rates range from 0.82% in 11791 to 0.82% in 11791, primarily due to differences in school district levies and local assessment districts.

If your estimate is higher than expected, Ownwell can appeal your Syosset assessment — you only pay if we save you money.

About Syosset Property Taxes

About Property Taxes in Syosset, Nassau, New York

Syosset’s median effective property tax rate of 0.82% 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 Syosset. Homeowners in the 11791 ZIP code carry a median effective rate of 0.82%, while those in the lowest ZIP also pay 0.82%. This reflects how school district boundaries and local assessment districts are drawn across Nassau County. Understanding which part of Syosset you live in can make a meaningful difference to your annual tax bill.

Syosset homeowners who believe their assessed value is too high can file a formal appeal with the local 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 Syosset, 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 Syosset'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 Syosset, Nassau County, New York

Source: Ownwell

0.18%

0.61%

1.04%

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 Syosset Tax Rate

0.82%

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%

Property Tax Rates Across Syosset, Nassau County, New York

Zip10th Percentile25th PercentileMedian Tax Rate75th Percentile90th Percentile
117910.30%0.71%0.82%0.86%0.90%

Source: Ownwell

Property Tax Assessment Values Across Syosset, Nassau County, New York

When examining property taxes in Syosset, 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 appraisal district 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 when notices are sent.

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 Syosset.

For example, the median home price in Syosset is $691,000, with tax bills ranging significantly across the county. 11791 has the highest median home price at $691,000.

Property Tax Assessment Values Across Syosset, Nassau County, New York

Source: Ownwell

$351,000

$2,146,500

$3,942,000

Median Syosset Market Value

$691,000

Median Nassau County Market Value

$518,000

Median New York Market Value

$312,500

Median United States Market Value

$235,294

Property Tax Assessment Values Across Syosset, Nassau County, New York

Zip10th Percentile25th PercentileMedian Home Price75th Percentile90th Percentile
11791$535,000$599,000$691,000$936,000$1,368,000

Source: Ownwell

Property Tax Bills Across Syosset, Nassau County, New York

Property tax bills in Syosset are based on the assessed value of a home and the local tax rate, which together determine how much a homeowner owes each year. With a median home price of $691,000, bills can vary widely depending on a property’s assessed market value, exemptions, and the taxing jurisdictions that apply. In Nassau County, the typical tax burden is high compared with the national median property tax bill of $2,400 and national median property tax rate of 1.02%.

For many homeowners, that means a larger share of housing costs goes toward taxes. The 25th percentile tax bill is $4,579, while the 75th percentile reaches $6,166, and the 90th percentile is $7,500. Ownwell helps homeowners review their assessments, identify savings opportunities, and appeal unfair property tax bills so they may pay only what they truly owe.

Property Tax Bills Across Syosset, Nassau County, New York

Source: Ownwell

$853

$5,263

$9,673

Median Syosset Tax Bill

$5,347

Median Nassau County Tax Bill

$3,634

Median New York Tax Bill

$5,420

Median United States Tax Bill

$2,400

Property Tax Bills Across Syosset, Nassau County, New York

Zip10th Percentile25th PercentileMedian Tax Bill75th Percentile90th Percentile
11791$3,882$4,579$5,347$6,166$7,500

Source: Ownwell

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Frequently Asked Property Tax Questions in Syosset, New York

How are property taxes calculated in Syosset, New York?
Property taxes in Syosset, New York are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.
How do I appeal my property taxes in Syosset, New York?
To appeal your property taxes in Syosset, New York, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.
What property tax exemptions are available in Syosset, New York?
Common property tax exemptions in Syosset, New York include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.
When are property taxes due in Syosset, New York?
Property tax deadlines in Syosset, New York vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.
How can Ownwell help reduce my property taxes in Syosset, New York?
Ownwell provides professional property tax appeal services in Syosset, New York. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.