Derby, New Haven County, Connecticut Property Taxes
Property Taxes in Derby, Connecticut
Median Derby, Connecticut effective property tax rate: 4.32%, significantly higher than the national median of 1.02%, and higher than the Connecticut state median of 3.05%.
Median Derby, Connecticut home value: $135,450
Median annual Derby, Connecticut tax bill: $5,851, $3,451 higher than the national median property tax bill of $2,400.
How are property taxes in New Haven calculated?
Property taxes in Derby, Connecticut 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 Derby's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Derby, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Derby, New Haven County, Connecticut Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
4.32%
Estimate Property Tax Bill
$5,851
$5,430
How Does the Derby Property Tax Calculator Work?
Use this Derby property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and the calculator applies Derby's median effective tax rate of 4.32% — based on actual property records in New Haven County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessor uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. The calculator applies Derby's median effective rate across all local levies, providing a more accurate estimate than using a single county millage rate.
Derby's property tax rate is higher than Connecticut's 3.05% median rate, and the typical tax bill is $5,851, which is $3,451 higher than the state median bill. Within Derby, the highest and lowest median tax bill both sit at $5,851 in 06418.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Derby.
About Derby Property Taxes
About Property Taxes in Derby, New Haven, Connecticut
Derby's median effective property tax rate of 4.32% is higher than the Connecticut state median of 3.05% and higher than the national median of 1.02%. This rate reflects the New Haven 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 Derby. Homeowners in the 06418 ZIP code carry a median effective rate of 4.32%, while those in the same ZIP also pay 4.32%. This spread reflects how school district boundaries and local assessment districts are drawn across New Haven County. Understanding which part of Derby you live in can make a meaningful difference to your annual tax bill.
Derby homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before the February 20, 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 Derby, New Haven County, Connecticut
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 Derby's effective property tax rate to other cities in Connecticut and the median property tax rates in Connecticut and the U.S.
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 Derby Tax Rate
4.32%
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 New Haven County Tax Rate
3.34%
Median Effective Connecticut Tax Rate
3.05%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Derby, New Haven County, Connecticut
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 06418 | 4.32% | 4.32% | 4.32% | 4.32% | 4.32% |
Source: Ownwell
Property Tax Assessment Values Across Derby, New Haven County, Connecticut
When examining property taxes in Derby, Connecticut, 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 New Haven 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 New Haven 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 Derby.
For example, the median home price in Derby is $135,450, with tax bills ranging significantly across the county. 06418 has the highest median home price at $135,450.
Property Tax Assessment Values Across Derby, New Haven County, Connecticut
Source: Ownwell
$98,700
$262,063
$425,425
Median Derby Market Value
$135,450
Median New Haven County Market Value
$186,900
Median Connecticut Market Value
$209,000
Median United States Market Value
$235,294
Property Tax Assessment Values Across Derby, New Haven County, Connecticut
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 06418 | $93,170 | $110,460 | $135,450 | $168,490 | $213,920 |
Source: Ownwell
Property Tax Bills Across Derby, New Haven County, Connecticut
How are property tax bills calculated in Derby, Connecticut?
Property tax bills in Derby are based on the assessed value of a home, which is tied to the market value determined by the local assessor. The city applies its property tax rate to that assessed value to calculate the annual bill, so changes in market conditions can affect what homeowners owe. Factors such as location, property characteristics, and local assessments all play a role in the final amount.
For homeowners in Derby, the bill can be significant compared with the national median property tax bill of $2,400. The median home price in the city is $135,450, and tax bills are often much higher than the national median property tax rate of 1.02% would suggest. The 25th percentile tax bill is $4,772, while the 75th percentile reaches $7,279, and the 90th percentile climbs to $9,241. These costs can have a major impact on monthly budgets and long-term housing affordability.
Median Derby Tax Bill
$5,851
Median New Haven County Tax Bill
$6,696
Median Connecticut Tax Bill
$6,666
Median United States Tax Bill
$2,400
Property Tax Bills Across Derby, New Haven County, Connecticut
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 06418 | $4,025 | $4,772 | $5,851 | $7,279 | $9,241 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 20 |
Links | |
|---|---|
| New Haven Tax Assessor | |
| Website | gis.vgsi.com |