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Thornwood, Westchester County, New York Property Taxes

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Property Taxes in Thornwood, New York

  • Median Thornwood, New York effective property tax rate: 1.81%, significantly lower than the national median of 1.02%, and higher than the New York state median of 1.90%.

  • Median Thornwood, New York home value: $766,355

  • Median annual Thornwood, New York tax bill: $13,562, $11,162 higher than the national median property tax bill of $2,400.

How are property taxes in Westchester calculated?

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

Last Updated April 13, 2026

Thornwood, Westchester County, New York Property Tax Bill Calculator

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.81%

Estimate Property Tax Bill

$13,871

$12,872

SAVE WITH OWNWELL

$774

Average Annual Tax Savings

How Does the Thornwood Property Tax Calculator Work?

Use this Thornwood property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Thornwood's median effective tax rate of 1.81% — based on actual property records in Westchester County — to generate your estimate.

Enter your property's estimated assessed value — the figure the local assessment 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 Thornwood's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.

Thornwood's bill is higher than the New York state median tax rate of 1.90% and far above the national median property tax rate of 1.02%, with a median property tax bill of $13,562. Rates are the same across ZIP code 10594, where the highest and lowest median tax bill both equal $13,562.

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

About Thornwood Property Taxes

About Property Taxes in Thornwood, Westchester, New York

Thornwood’s median effective property tax rate of 1.81% is lower than the New York state median of 1.90% and higher than the national median of 1.02%. This rate reflects the Westchester 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 Thornwood. Homeowners in the 10594 ZIP code carry a median effective rate of 1.81%, while those in 10594 pay 1.81%. This spread — 0 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Westchester County. Understanding which part of Thornwood you live in can make a meaningful difference to your annual tax bill.

Thornwood homeowners who believe their assessed value is too high can file a formal appeal with the local Assessment Review Commission before the 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 Thornwood, Westchester 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 Thornwood'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 Thornwood, Westchester County, New York

Source: Ownwell

0.13%

6.57%

13.01%

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 Thornwood Tax Rate

1.81%

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 Westchester County Tax Rate

1.65%

Median Effective New York Tax Rate

1.90%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Thornwood, Westchester County, New York

Zip10th Percentile25th PercentileMedian Tax Rate75th Percentile90th Percentile
105941.77%1.81%1.81%1.81%1.81%

Source: Ownwell

Property Tax Assessment Values Across Thornwood, Westchester County, New York

When examining property taxes in Thornwood, 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 Westchester 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 Westchester County, assessment notices are sent in the spring each year. They'll typically reach your mailbox 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 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 Thornwood.

For example, the median home price in Thornwood is $766,355, with tax bills ranging significantly across the county. 10594 has the highest median home price at $766,355.

Property Tax Assessment Values Across Thornwood, Westchester County, New York

Source: Ownwell

$151,450

$988,424

$1,825,397

Median Thornwood Market Value

$766,355

Median Westchester County Market Value

$638,095

Median New York Market Value

$312,500

Median United States Market Value

$235,294

Property Tax Assessment Values Across Thornwood, Westchester County, New York

Zip10th Percentile25th PercentileMedian Home Price75th Percentile90th Percentile
10594$504,673$621,495$766,355$934,579$1,130,841

Source: Ownwell

Property Tax Bills Across Thornwood, Westchester County, New York

Property tax bills in Thornwood are based on the assessed value of a home, not its market price alone, and the local tax rate is applied to that assessment to calculate what homeowners owe. For many homeowners, the result is a bill that is well above the national median property tax bill of $2,400. With a median home price of $766,355, tax bills in the area can be substantial, and homeowners often see a wide range depending on their property’s assessed value and local taxing authorities.

The 25th percentile tax bill is $11,019, while the 75th percentile tax bill is $16,783, and the 90th percentile reaches $20,343. That means even similar homes can face very different property tax bills. Ownwell helps homeowners challenge inaccurate assessments and pursue exemptions, which can lower property tax bills and reduce the chance of overpaying year after year.

Property Tax Bills Across Thornwood, Westchester County, New York

Source: Ownwell

$1,436

$18,351

$35,265

Median Thornwood Tax Bill

$13,562

Median Westchester County Tax Bill

$9,223

Median New York Tax Bill

$5,420

Median United States Tax Bill

$2,400

Property Tax Bills Across Thornwood, Westchester County, New York

Zip10th Percentile25th PercentileMedian Tax Bill75th Percentile90th Percentile
10594$8,900$11,019$13,562$16,783$20,343

Source: Ownwell

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Frequently Asked Property Tax Questions in Thornwood, New York

How are property taxes calculated in Thornwood, New York?
Property taxes in Thornwood, 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 Thornwood, New York?
To appeal your property taxes in Thornwood, 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 Thornwood, New York?
Common property tax exemptions in Thornwood, 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 Thornwood, New York?
Property tax deadlines in Thornwood, 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 Thornwood, New York?
Ownwell provides professional property tax appeal services in Thornwood, 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.