Gilmanton, Belknap County, New Hampshire Property Taxes
Property Taxes in Gilmanton, New Hampshire
Median Gilmanton, New Hampshire effective property tax rate: 1.47%, lower than the national median of 1.02%, and lower than the New Hampshire state median of 1.82%.
Median Gilmanton, New Hampshire home value: $418,950
Median annual Gilmanton, New Hampshire tax bill: $6,175, higher than the national median property tax bill of $2,400.
How are property taxes in Belknap calculated?
Property taxes in Gilmanton, New Hampshire 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 Gilmanton’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Gilmanton, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Gilmanton, Belknap County, New Hampshire Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.47%
Estimate Property Tax Bill
$6,159
$5,715
How Does the Gilmanton Property Tax Calculator Work?
Use this Gilmanton property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Gilmanton's median effective tax rate of 1.47% — based on actual property records in Belknap County — to generate your estimate.
Enter your property's estimated assessed value — the figure used to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Gilmanton'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 Gilmanton: rates range from 1.47% in 03237 to 1.47% in 03237, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Gilmanton.
About Gilmanton Property Taxes
About Property Taxes in Gilmanton, Belknap, New Hampshire
Gilmanton’s median effective property tax rate of 1.47% is lower than the New Hampshire state median of 1.82% and higher than the national median of 1.02%. This rate reflects the Belknap County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Gilmanton. Homeowners in the 03237 ZIP code carry a median effective rate of 1.47%, while those in 03237 pay 1.47%. This spread — 0 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Belknap County. Understanding which part of Gilmanton you live in can make a meaningful difference to your annual tax bill.
Gilmanton homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the March 1, 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 Gilmanton, Belknap County, New Hampshire
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 Gilmanton's effective property tax rate to other cities in New Hampshire and the median property tax rates in New Hampshire and the U.S.
Our median effective property tax rate (tax bill Ă· 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 Gilmanton Tax Rate
1.47%
Our median effective property tax rate (tax bill Ă· 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 Belknap County Tax Rate
1.32%
Median Effective New Hampshire Tax Rate
1.82%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Gilmanton, Belknap County, New Hampshire
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 03237 | 1.47% | 1.47% | 1.47% | 1.47% | 1.47% |
Source: Ownwell
Property Tax Assessment Values Across Gilmanton, Belknap County, New Hampshire
When examining property taxes in Gilmanton, New Hampshire, 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 Belknap County assessment office 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 Belknap County are sent in the spring each year and typically reach your mailbox by the middle of the month. 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.
For example, the median home price in Gilmanton is $418,950, with tax bills ranging significantly across the county. The median tax bill is $6,175, compared with the national median property tax bill of $2,400.
Property Tax Assessment Values Across Gilmanton, Belknap County, New Hampshire
Source: Ownwell
$270,700
$394,850
$519,000
Median Gilmanton Market Value
$418,950
Median Belknap County Market Value
$378,800
Median New Hampshire Market Value
$360,500
Median United States Market Value
$235,294
Property Tax Assessment Values Across Gilmanton, Belknap County, New Hampshire
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 03237 | $234,100 | $317,225 | $418,950 | $520,200 | $657,950 |
Source: Ownwell
Property Tax Bills Across Gilmanton, Belknap County, New Hampshire
Property tax bills in Gilmanton are calculated by multiplying the assessed value of a home by the local tax rate set by the town, county, and other taxing authorities. The assessed value is based on the market value of the property, not what a homeowner originally paid for it. For a home with a median market value of $418,950, even a small change in assessment or tax rate can noticeably affect the final bill.
Homeowners in Belknap County should also know that property tax bills can vary widely. The 25th percentile bill is $4,676, while the 75th percentile reaches $7,668 and the 90th percentile climbs to $9,698. The median tax bill in ZIP code 03237 is $6,175.
These taxes help fund local services, but they also represent a major housing cost for homeowners. When assessments rise faster than income, property taxes can become harder to manage, making it important to understand how the bill is determined and whether the assessment is accurate.
Median Gilmanton Tax Bill
$6,175
Median Belknap County Tax Bill
$4,987
Median New Hampshire Tax Bill
$6,530
Median United States Tax Bill
$2,400
Property Tax Bills Across Gilmanton, Belknap County, New Hampshire
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 03237 | $3,451 | $4,676 | $6,175 | $7,668 | $9,698 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | March 1 |
Links | |
|---|---|
| Belknap Tax Assessor | |
| Website | gis.vgsi.com |