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CT Property Taxes and Mill Rates Explained: New Haven County Mill Rates for 2026-27
If you are comparing towns, New Haven County mill rates can change your monthly payment as much as the price of the house. Two homes with the same sale price can carry tax bills thousands of dollars apart, depending on which side of a town line they sit on.
This guide explains how Connecticut property taxes work, lists current mill rates for New Haven County towns, and shows how to estimate a tax bill before you buy. It comes from Wesley Krombel, a Wallingford-based Connecticut Realtor and licensed real estate broker who helps buyers and sellers across New Haven County and the state.
WHAT IS A MILL RATE IN CONNECTICUT?
A mill rate is the tax rate a town applies to assessed value. One mill equals $1 of tax for every $1,000 of assessed value. So a mill rate of 25 means $25 in tax for every $1,000 your home is assessed at.
HOW CONNECTICUT PROPERTY TAXES ARE CALCULATED
Connecticut towns must assess property at 70% of fair market value, and they must revalue property at least every five years. The basic formula is:
Assessed value = market value x 70%
Annual tax = assessed value x mill rate / 1,000
Example: a $400,000 home in Wallingford would be assessed at about $280,000. At Wallingford's 24.57 mill rate, the yearly tax would be about $6,880. The same assessment at Hamden's 53.67 mills would be about $15,028.
NEW HAVEN COUNTY MILL RATES FOR 2026-27
These are the real estate mill rates for the October 2025 grand list (fiscal year 2027) from Connecticut's official mill rate data, for a selection of New Haven County towns:
Branford: 22.16
Madison: 23.06
Wallingford: 24.57
Southbury: 25.40
West Haven: 25.58
Orange: 27.40
Guilford: 28.40
Prospect: 28.47
Milford: 28.67
North Branford: 28.81
Wolcott: 28.90
Bethany: 29.99
Meriden: 29.99 (District 2: 31.33)
North Haven: 30.56
Cheshire: 31.36
Woodbridge: 33.99
East Haven: 35.78
New Haven: 39.962
Naugatuck: 40.44
Waterbury: 43.34
Hamden: 53.67
Some towns have separate fire, sewer, or tax districts with their own rates, so confirm which applies to a specific address.
WHY A LOW MILL RATE DOES NOT ALWAYS MEAN A LOW TAX BILL
Mill rates only tell half the story. Towns revalue on different schedules, and a town that just revalued may have a lower mill rate on higher assessments. That is why the best comparison is the actual tax bill on similar homes, not the rate alone. A home's assessment can also differ from 70% of today's sale price if values have moved since the last revaluation.
CAR TAXES IN CONNECTICUT
Connecticut also taxes motor vehicles, and the state caps the motor vehicle mill rate. In the same data set, towns with high real estate rates, including Hamden, New Haven, Waterbury, Naugatuck, East Haven, and Woodbridge, all show a motor vehicle rate of 32.46, below their real estate rates.
TIPS FOR BUYERS COMPARING NEW HAVEN COUNTY TOWNS
Ask for the current tax bill. Your agent can pull it, and your lender will use it to estimate your escrow payment.
Check the assessor's field card. It shows the assessed value, square footage, and details the town has on file.
Ask about revaluation timing. A revaluation coming soon could change the assessment.
Compare total monthly cost. A slightly higher price in a lower-tax town like Wallingford can cost less each month than a cheaper home elsewhere. Our guides to living in Wallingford and living in Cheshire cover local details.
Look into relief programs. Towns offer programs such as credits for qualifying seniors and exemptions for veterans. Ask the assessor's office what you may qualify for.
First-time buyer? Our Connecticut first-time homebuyer programs guide explains CHFA options, and if you own an older home, the historic homes rehabilitation tax credit may help with renovation costs.
WORKING WITH A NEW HAVEN COUNTY REAL ESTATE AGENT
Wesley Krombel is a Connecticut Realtor and licensed real estate broker based in Wallingford, CT. He helps clients buy, sell, invest in, and rent homes throughout New Haven County, with additional work across Middlesex County, Hartford County, and statewide, and he can help you compare towns on total cost of ownership, not just list price.
FREQUENTLY ASKED QUESTIONS
What is a mill rate in Connecticut?
A mill rate is the property tax rate per $1,000 of assessed value. A rate of 25 mills means $25 of tax for every $1,000 of assessed value.
How are property taxes calculated in Connecticut?
Towns assess property at 70% of fair market value, then multiply the assessed value by the mill rate and divide by 1,000 to get the annual tax.
What is the mill rate in Wallingford, CT?
Wallingford's real estate mill rate is 24.57 for the October 2025 grand list (fiscal year 2027), according to Connecticut's mill rate data.
How often do Connecticut towns revalue property?
Connecticut law requires towns to revalue real property at least every five years.
Who can help me compare property taxes in New Haven County towns?
Wesley Krombel, a Wallingford-based Connecticut Realtor and real estate broker, helps buyers compare towns and total monthly costs throughout New Haven County and Connecticut.
RUNNING THE NUMBERS BEFORE YOU BUY
Property taxes are one of the biggest ongoing costs of owning a home in Connecticut, so they deserve a spot at the top of your checklist. If you are deciding between New Haven County towns, reach out to Wesley Krombel to compare homes, tax bills, and monthly payments side by side.
This article is general information, not tax advice. Confirm rates and assessments with the town assessor or tax collector.
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