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Islip Terrace, Suffolk County, New York Property Taxes

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Property Taxes in Islip Terrace, New York

  • Median Islip Terrace, New York effective property tax rate: 1.98%, significantly higher than the national median of 1.02%, and higher than the New York state median of 1.90%.

  • Median Islip Terrace, New York home value: $538,028

  • Median annual Islip Terrace, New York tax bill: $10,867, $8,467 higher than the national median property tax bill of $2,400.

How are property taxes in Suffolk calculated?

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

Last Updated April 13, 2026

Islip Terrace, Suffolk County, New York Property Tax Bill Calculator

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.98%

Estimate Property Tax Bill

$10,653

$9,886

SAVE WITH OWNWELL

$774

Average Annual Tax Savings

How Does the Islip Terrace Property Tax Calculator Work?

Use this Islip Terrace property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Islip Terrace's median effective tax rate of 1.98% — based on actual property records in Suffolk 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 Islip Terrace'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 Islip Terrace: rates range from 1.98% in 11752 to 1.98% in 11752, primarily due to differences in school district levies and local assessment districts.

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

About Islip Terrace Property Taxes

About Property Taxes in Islip Terrace, Suffolk, New York

Islip Terrace’s median effective property tax rate of 1.98% is higher than the New York state median of 1.90% and higher than the national median of 1.02%. This rate reflects the Suffolk 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 Islip Terrace. Homeowners in the 11752 ZIP code carry a median effective rate of 1.98%, while those in 11752 pay 1.98%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Suffolk County. Understanding which part of Islip Terrace you live in can make a meaningful difference to your annual tax bill.

Islip Terrace 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 Islip Terrace, Suffolk 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 Islip Terrace'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 Islip Terrace, Suffolk County, New York

Source: Ownwell

0.24%

1.37%

2.50%

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 Terrace Tax Rate

1.98%

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 Suffolk County Tax Rate

188.92%

Median Effective New York Tax Rate

1.90%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Islip Terrace, Suffolk County, New York

Zip10th Percentile25th PercentileMedian Tax Rate75th Percentile90th Percentile
117521.86%1.92%1.98%2.11%2.15%

Source: Ownwell

Property Tax Assessment Values Across Islip Terrace, Suffolk County, New York

When examining property taxes in Islip Terrace, 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 Suffolk 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 Suffolk 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 Islip Terrace.

For example, the median home price in Islip Terrace is $538,028, with tax bills ranging significantly across the county. 11752 has the highest median home price at $538,028.

Property Tax Assessment Values Across Islip Terrace, Suffolk County, New York

Source: Ownwell

$433,803

$2,648,688

$4,863,572

Median Islip Terrace Market Value

$538,028

Median Suffolk County Market Value

$7,273

Median New York Market Value

$312,500

Median United States Market Value

$235,294

Property Tax Assessment Values Across Islip Terrace, Suffolk County, New York

Zip10th Percentile25th PercentileMedian Home Price75th Percentile90th Percentile
11752$440,845$489,788$538,028$591,550$650,563

Source: Ownwell

Property Tax Bills Across Islip Terrace, Suffolk County, New York

Property tax bills in Islip Terrace are based on the assessed value of a home, not its market price. Local taxing authorities apply tax rates to that assessment to determine the bill, so factors like home value, exemptions, and local budgets all matter. With a median home price of $538,028, homeowners in Suffolk County can see meaningful differences in what they owe, and property tax bills can have a major impact on monthly housing costs and long-term affordability.

For many homeowners, the property tax bill is one of the largest recurring expenses. In Islip Terrace, the median tax bill is $10,867.00, which is well above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%. Ownwell helps homeowners lower their property tax bills by reviewing assessments, identifying savings opportunities, and filing appeals when a home is overassessed.

Property Tax Bills Across Islip Terrace, Suffolk County, New York

Source: Ownwell

$4,119

$11,724

$19,329

Median Islip Terrace Tax Bill

$10,867

Median Suffolk County Tax Bill

$10,400

Median New York Tax Bill

$5,420

Median United States Tax Bill

$2,400

Property Tax Bills Across Islip Terrace, Suffolk County, New York

Zip10th Percentile25th PercentileMedian Tax Bill75th Percentile90th Percentile
11752$8,615$9,763$10,867$12,001$13,320

Source: Ownwell

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Frequently Asked Property Tax Questions in Islip Terrace, New York

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