Nantucket County, Massachusetts Property Taxes
Property Taxes in Nantucket County, Massachusetts
Median Nantucket County effective property tax rate: 0.33%, significantly lower than the national median of 1.02%.
Median Nantucket County home value: $2,120,900
Median annual Nantucket County tax bill: $6,957, $4,557 lower than the national median property tax bill of $2,400.
How are property taxes in Nantucket County calculated?
Property taxes in Nantucket County 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.
Why do property taxes in Nantucket County matter? Because the county’s median effective property tax rate is 0.33%, which is lower than the Massachusetts median rate of 1.15%, yet the median annual tax bill is still $6,957. That reflects the area’s high home values and shows why understanding your assessed value is so important.
Can homeowners lower their property tax bill? Yes, reviewing your assessment and checking for exemptions can help reduce what you owe.
Whether you live in Nantucket or elsewhere in Nantucket County, knowing local tax details can help homeowners and investors save money.
Last Updated April 13, 2026
Nantucket County, Massachusetts Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.33%
Estimate Property Tax Bill
$6,999
$6,495
How Does the Nantucket County Property Tax Calculator Work?
Use this Nantucket County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Nantucket County's median effective tax rate of 0.33% to generate your estimate.
Enter your property's estimated assessed value — the figure used for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local levies, and any special assessment districts that apply to your property. Nantucket County's median tax rate is lower than the 1.15% state median and well below the 1.02% national median property tax rate.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Nantucket County.
Property Tax Rates Across Nantucket County, Massachusetts
What Are Effective Property Tax Rates Across Nantucket County?
Local government entities set tax rates, which vary widely across Nantucket County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Nantucket County's effective property tax rate to other counties in Massachusetts or the U.S. median of 1.02%.
Nantucket County's median effective rate stands at 0.33%, which is lower than the national median of 1.02%. Within Nantucket County, the highest rate is found in Nantucket at 0.33%, while Nantucket has the lowest at 0.33%.
These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.
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 Nantucket County Tax Rate
0.33%
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 Massachusetts Tax Rate
1.15%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Nantucket County, Massachusetts
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Nantucket | 0.33% | 0.33% | 0.33% | 0.33% | 0.33% |
| Siasconset | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Nantucket County, Massachusetts
When examining property taxes in Nantucket County, 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 Nantucket 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 Nantucket County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of May.
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 Nantucket County.
For example, the median tax bill in Nantucket County is $6,957, with tax bills ranging significantly across the county. Nantucket has the highest median home price at $2,120,900.
Property Tax Assessment Values Across Nantucket County, Massachusetts
Source: Ownwell
$2,120,900
$2,120,900
$2,120,900
Median Nantucket County Market Value
$2,120,900
Median Massachusetts Market Value
$561,600
Median United States Market Value
$235,294
Property Tax Assessment Values Across Nantucket County, Massachusetts
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Nantucket | $1,007,300 | $1,457,000 | $2,120,900 | $3,474,450 | $5,320,171 |
| Siasconset | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Nantucket County, Massachusetts
Property tax bills in Nantucket are based on the assessed value of a home and the local tax rate set by the county and other taxing authorities. When a property’s assessed value rises, the tax bill can increase even if the homeowner has not made any changes to the home. The county’s median home price is $2,120,900, which helps explain why tax bills can be substantial.
In Nantucket, the median property tax bill is $6,957, which is well above the national median property tax bill of $2,400. Bills vary widely across homeowners: the 25th percentile is $4,779, the 75th percentile is $11,398, and the 90th percentile is $17,464. These differences reflect how assessed values and local tax rates combine to determine what each homeowner owes. For many homeowners, higher property taxes can significantly affect monthly housing costs and overall affordability.
Median Nantucket County Tax Bill
$6,957
Median Massachusetts Tax Bill
$6,068
Median United States Tax Bill
$2,400
Property Tax Bills Across Nantucket County, Massachusetts
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Nantucket | $3,305 | $4,779 | $6,957 | $11,396 | $17,450 |
| Siasconset | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 1 |
Links | |
|---|---|
| Nantucket Tax Assessor | |
| Website | gis.vgsi.com |