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Mamaroneck, Westchester County, New York Property Taxes

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Property Taxes in Mamaroneck, New York

  • Median Mamaroneck, New York effective property tax rate: 1.59%, significantly lower than the national median of 1.02%, and lower than the New York state median of 1.90%.

  • Median Mamaroneck, New York home value: $829,300

  • Median annual Mamaroneck, New York tax bill: $19,456, $17,056 higher than the national median property tax bill of $2,400.

How are property taxes in Westchester calculated?

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

Last Updated April 13, 2026

Mamaroneck, Westchester County, New York Property Tax Bill Calculator

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.59%

Estimate Property Tax Bill

$13,186

$12,236

SAVE WITH OWNWELL

$774

Average Annual Tax Savings

How Does the Mamaroneck Property Tax Calculator Work?

Use this Mamaroneck property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Mamaroneck's median effective tax rate of 1.59% — 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 Mamaroneck'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 Mamaroneck: rates range from 1.59% in 10543 to 1.59% in 10543, primarily due to differences in school district levies and local assessment districts.

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

About Mamaroneck Property Taxes

About Property Taxes in Mamaroneck, Westchester, New York

Mamaroneck’s median effective property tax rate of 1.59% 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 Mamaroneck. Homeowners in the 10543 ZIP code carry a median effective rate of 1.59%, while those in the same ZIP code pay 1.59%. 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 Mamaroneck you live in can make a meaningful difference to your annual tax bill.

Mamaroneck 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 Mamaroneck, 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 Mamaroneck'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 Mamaroneck, 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 Mamaroneck Tax Rate

1.59%

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 Mamaroneck, Westchester County, New York

Zip10th Percentile25th PercentileMedian Tax Rate75th Percentile90th Percentile
105431.59%1.59%1.59%2.95%2.95%

Source: Ownwell

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

When examining property taxes in Mamaroneck, 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 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 Mamaroneck.

For example, the median home price in Mamaroneck is $829,300, with tax bills ranging significantly across the county. 10543 has the highest median home price at $829,300.

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

Source: Ownwell

$151,450

$988,424

$1,825,397

Median Mamaroneck Market Value

$829,300

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 Mamaroneck, Westchester County, New York

Zip10th Percentile25th PercentileMedian Home Price75th Percentile90th Percentile
10543$259,600$656,650$829,300$1,187,650$1,987,040

Source: Ownwell

Property Tax Bills Across Mamaroneck, Westchester County, New York

Property tax bills in Mamaroneck are calculated by applying the local tax rate to a home’s assessed value, which is influenced by the market value of the property and local taxing authorities. For homeowners, that means a higher assessed value can lead to a larger bill, even when the home itself has not changed. With a median home price of $829,300, property taxes can be a major part of the cost of owning a home in this area.

The median tax bill is $19,456, which is far above the national median property tax bill of $2,400. Bills in the area also vary widely, with the 25th percentile at $11,032 and the 75th percentile at $28,482, showing how much assessments can differ from one home to another. Ownwell can help homeowners review their assessed value, identify opportunities to appeal, and pursue exemptions that may lower their property tax bills.

Property Tax Bills Across Mamaroneck, Westchester County, New York

Source: Ownwell

$1,436

$18,351

$35,265

Median Mamaroneck Tax Bill

$19,456

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 Mamaroneck, Westchester County, New York

Zip10th Percentile25th PercentileMedian Tax Bill75th Percentile90th Percentile
10543$3,854$11,032$19,456$28,482$42,450

Source: Ownwell

Don't miss the deadline to file a grievance!

Frequently Asked Property Tax Questions in Mamaroneck, New York

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