Norwalk, CT Tax Rate: Mill Rates, Exemptions, and Appeals

Norwalk’s property tax rate is not a single number. The city splits into six taxing districts, each with its own mill rate reflecting the municipal services available there. For fiscal year 2024–25, the real estate rates ran from 22.0516 mills in the Sixth District up to 23.5914 in the Fourth, with the First through Third Districts at 23.5445 and the Fifth at 23.3752.¹ A mill equals one dollar of tax for every $1,000 of assessed value.²

Those numbers moved up for fiscal year 2025–26 after the city dropped its motor vehicle rate from 32.46 to 22 mills, which shifted more of the burden onto real estate.³ The Board of Estimate and Taxation finalized rates for fiscal year 2026–27 (the 2025 Grand List) on May 7, 2026.¹ Any figure that appears here will be outdated by the next budget cycle, so the current rates always live on the city’s Tax Collector page.

Why Norwalk Has Six Different Rates

The differences between districts come down to services. Some parts of the city receive garbage collection, street lighting, or sewer maintenance from the city; others don’t. If your district doesn’t receive a service, you don’t pay for it in your mill rate. That’s why the Sixth District sits more than a mill and a half below the Fourth: fewer services bundled into the rate.

How to Calculate Your Bill

The formula is simple. Divide your assessed value by 1,000, then multiply by your district’s mill rate. A home assessed at $400,000 in the Fifth District at 23.3752 mills owes $9,350.08 for the year. The same home in the Fourth District at 23.5914 mills owes $9,436.56. That is about $86 in annual difference from being on the other side of a district boundary.

Your assessed value is 70% of fair market value, as Connecticut law requires.⁴ You can look up your current assessment through the city’s online property database or in person at the Tax Assessor’s office.

The 2023 Revaluation and Why Your Bill Keeps Rising

Norwalk’s citywide revaluation was finalized in February 2024. Values came in an average of 35% higher across the city, driven mostly by the post-pandemic residential surge. Rather than apply the increase all at once, the city is phasing it in over four fiscal years:¹

Year 1: July 2024 and January 2025 bills
Year 2: July 2025 and January 2026 bills
Year 3: July 2026 and January 2027 bills
Year 4: July 2027 and January 2028 bills (final year)

Each year moves your assessed value closer to the full revalued figure. That means your bill can climb even if the mill rate holds steady, and the number you get by taking 70% of today’s market price may not match your current assessment. The assessor’s office can walk you through where your property sits in the phase-in schedule. Connecticut requires municipalities to revalue at least every five years.⁵

Motor Vehicle and Business Personal Property Rates

Vehicles are taxed separately. Connecticut caps the motor vehicle rate at 32.46 mills, and a newer provision also bars a municipality from setting the vehicle rate higher than its lowest real estate rate.⁴ In Norwalk, that second cap is what binds. The vehicle rate for fiscal year 2025–26 is 22 mills, well down from 32.46 the prior year.³

Vehicle values come from standardized pricing guides (typically NADA), not individual appraisals. The motor vehicle Grand List closes each October. If you register a vehicle after October 1, a supplemental bill arrives the following January covering registration date through the end of the assessment year.

Business equipment, furniture, and fixtures are taxed at the highest rate in the city. For fiscal year 2025–26, Norwalk set the business personal property rate at 32 mills.³ Business owners file an annual personal property declaration with the assessor by November 1. A missed filing brings a 25% penalty on the assessed value.

Exemptions That Lower Your Assessed Value

Several programs reduce the assessment the mill rate is applied to. Each has its own deadline, and missing one means waiting a year.⁶

Veterans and Active-Duty Military

The basic veteran’s exemption takes $6,000 off a home or motor vehicle assessment. You qualify with at least 90 days of wartime service and an honorable discharge. File your DD-214 (long form) with the Town Clerk by September 30 to get the benefit on the following July bill. Income-eligible veterans can apply for an additional state-funded exemption worth up to 200% of the local amount.⁷ Veterans with a VA disability rating of at least 10% get further reductions, and as of October 1, 2024, a 100% permanent and total rating can exempt an entire dwelling (not the land), a condominium, or a motor vehicle.⁶

Active-duty Connecticut residents can exempt one motor vehicle entirely, with an annual application due to the assessor by December 31 following the tax bill. Non-Connecticut residents garaging a vehicle here on military orders qualify under the Servicemembers Civil Relief Act.⁶

Blind and Disabled Residents

Residents certified as legally blind by the state get a $3,000 real estate assessment reduction, with an October 1 deadline. Totally disabled homeowners under 65 who receive Social Security disability benefits get a $1,000 reduction on real estate or a motor vehicle, with a January 31 deadline.⁶

Elderly and Disabled Homeowner Relief

Connecticut’s state-funded credit for homeowners 65 or older (or surviving spouses over 50) pays 10% to 50% of the tax bill depending on income, capped at $1,250 for married homeowners and $1,000 for unmarried homeowners.⁸ Totally disabled homeowners qualify at any age. Applications go to the assessor between February 1 and May 15. Norwalk also runs a deferral program letting qualifying elderly homeowners postpone part of the bill, with the deferred amount coming due when the property is sold or the owner dies.⁶

If You Think Your Assessment Is Too High

The first stop is the Board of Assessment Appeals. The statutory deadline for a written appeal is February 20.⁹ When the assessor gets a filing extension (common in revaluation years), that shifts to March 20, and hearings move from March to April.¹⁰ Confirm which deadline applies with the assessor each year.

Your appeal should include your own value estimate and the basis for disagreeing. Comparable recent neighborhood sales carry the most weight. A professional appraisal adds credibility but typically runs $300 to $500 or more. The board will schedule a hearing and give at least seven days’ notice. If the board rules against you, or declines to hear the case (which it can do for commercial and industrial properties assessed above $1 million), the next step is Superior Court.⁹

Payment Dates and Late Charges

Norwalk bills in two installments: July 1 and January 1.¹ Miss a deadline and interest runs at 1.5% per month (18% a year) on the delinquent balance, with a $2 minimum per installment.¹¹ Any partial month counts as a full month, so one day late costs 1.5%. State law makes the interest mandatory. The Tax Collector cannot waive it.

If your motor vehicle tax is unpaid, the DMV will block your registration renewal until the Tax Collector notifies it that the balance is clear. And if real estate taxes go unpaid long enough, the city can sell the property at public auction under Connecticut General Statutes § 12-157 to recover what’s owed, along with unpaid zoning fines and blight fees.¹²

1
Norwalk, CT – Official Website. Tax Collector
2
State of Connecticut Office of Policy and Management. Mill Rates
3
Norwalk, CT – Official Website. What’s New for July 2025: Changes to Your Tax Bill
4
Connecticut General Assembly. Chapter 203 – Property Tax Assessment
5
State of Connecticut Office of Policy and Management. Revaluation Date by Town
6
Norwalk, CT – Official Website. Tax Exemptions
7
State of Connecticut Office of Policy and Management. Additional Veterans Tax Relief Program
8
Justia Law. Connecticut Code Title 12 – Chapter 204a – Section 12-170aa – Tax Relief for Elderly or Totally Disabled Homeowners
9
Justia Law. Connecticut Code Title 12 – Chapter 203 – Section 12-111 – Appeals to Board of Assessment Appeals
10
Norwalk, CT – Official Website. Deadline for Board of Assessment Appeal is March 20
11
Connecticut General Assembly. Chapter 204 – Local Levy and Collection of Taxes
12
Norwalk, CT – Official Website. Tax Sale Information and Documents