Connecticut property tax differences by town: a complete guide

Last updated 2026-07-09

Why does Connecticut property tax vary so much by town?

There is no county government collecting property tax in Connecticut. All 169 towns and cities operate as fully independent taxing authorities under Connecticut General Statutes Title 12. Each municipality sets its own mill rate, runs its own assessor's office, and pays for its own schools, fire departments, and roads entirely through local property tax revenue. The state levies no property tax at all.

The spread surprises people who move here from states with uniform rates. Salisbury's mill rate was about 10.9 in fiscal year 2024-25 ^[1]. Hartford's sat at roughly 68.95 the same year ^[2]. One mill equals $1 of tax per $1,000 of assessed value. A home assessed at $300,000 pays $3,270 in Salisbury and $20,685 in Hartford. Same value. Wildly different bill.

The gap comes from fiscal capacity more than spending preferences. Wealthy towns have a large grand list (the total assessed value of all taxable property) spread across a small population. Greenwich's grand list per resident is enormous, so even a tiny mill rate raises plenty of revenue. Hartford's grand list is squeezed partly because a large share of its land belongs to tax-exempt institutions and state government, so it needs a high rate to raise the same absolute dollars ^[3].

This structure puts real weight on which town you buy in. It also means the appeal process that saves a Hartford homeowner thousands might save a Westport homeowner only a few hundred, even when both homes are overassessed by the same percentage.

How does Connecticut calculate your property tax bill?

The formula is short. Connecticut law requires assessors to value property at 70% of fair market value, and that 70% figure is your assessed value ^[4]. Your tax bill works out like this:

Assessed Value × Mill Rate ÷ 1,000 = Annual Tax

So if your home appraises at $400,000, the assessor sets your assessed value at $280,000. At a mill rate of 30, your bill is $280,000 × 30 ÷ 1,000 = $8,400.

The 70% ratio comes from Connecticut General Statutes Section 12-64 ^[4]. Assessors don't hit 70% perfectly on every parcel in practice. The Office of Policy and Management (OPM) runs an annual equalization study that estimates each town's average assessment ratio against actual sale prices. When a town drifts well below 70%, the state can require a revaluation.

A few extra charges show up on some bills. Motor vehicles are taxed as personal property under a statewide mill rate cap of 32.46 mills, set by state law starting in 2023 ^[5]. Some towns also levy a separate fire district or special district tax on top of the town rate. Read the full bill, more than the headline mill rate.

Exemptions cut assessed value before the mill rate applies. Programs like the veterans' exemption or the elderly and disabled circuit breaker reduce the taxable base itself, which softens the mill rate's bite for owners who qualify.

What are the actual mill rates by town in Connecticut?

The Connecticut Office of Policy and Management publishes the official mill rate table for all 169 municipalities every fiscal year ^[1]. The table below samples the 2024-25 rates to show the range. These are real published figures. Always confirm the current year with your town's tax collector, because rates change with each budget cycle.

Town	2024-25 Mill Rate (approx.)	Notes
Salisbury	~10.9	Among lowest in state
Greenwich	~11.1	High property values compress rate
Westport	~17.0	Affluent Fairfield County suburb
Farmington	~25.3	Central CT, mid-tier rate
New Haven	~43.9	High rate, large exempt land base
Bridgeport	~53.99	One of highest in state
Waterbury	~54.4	Large city, fiscal pressure
Hartford	~68.95	Highest or near-highest in state

A pattern jumps out. The lowest rates cluster in northwestern Connecticut (the Litchfield County hill towns) and in the richest Fairfield County suburbs. The highest rates sit in the legacy industrial cities: Hartford, Bridgeport, Waterbury, New Haven, and Windham.

Fairfield County towns often land mid-table or low despite big absolute tax dollars, because those dollars come from genuinely high market values rather than high rates. A Greenwich home assessed at $1,400,000 at 11 mills still generates a $15,400 bill. The rate alone hides the story. Effective tax rate (annual tax divided by actual market value) is the cleaner comparison.

For how Connecticut fits into the national picture, see our property tax by state 2025 guide, which ranks all 50 states by effective rate.

Which Connecticut towns have the highest effective property tax rates?

Effective rate (annual tax divided by market value, not assessed value) is the number that tells you what owning property actually costs. Because Connecticut mandates 70% assessment, a perfect assessment makes your effective rate exactly 70% of the mill rate stated as a percentage. At 68.95 mills, Hartford's theoretical effective rate on a perfectly assessed home is 4.83% of market value.

The Tax Foundation's 2023 data put Connecticut's average effective property tax rate at 1.79%, ranking it 6th highest in the country ^[6]. That statewide average buries the local spread. Hartford, Bridgeport, and Waterbury all run effective rates above 3%, which would rank among the highest of any large city in the nation. Greenwich and Salisbury sit below 0.6%, in the range of low-tax Sun Belt states. The Lincoln Institute's 50-state comparison shows this same urban-to-suburban split inside Connecticut ^[10].

The consistently high-rate towns share a profile: older industrial base, shrinking population, a big slice of tax-exempt property, and school systems with expensive per-pupil spending. The low-rate towns run the opposite: wealthy residential base, few exempt parcels, lower per-pupil costs helped by state aid formulas.

Here is where the appeal math splits by location. Overassessed by $30,000 in assessed value in Hartford? You're overpaying about $2,069 a year. The same error in Greenwich costs you about $333. Both are worth fixing. But the urgency, and the call on whether to hire help or do it yourself, changes a lot. The TaxFightBack DIY appeal kit is built for exactly this step: run the numbers yourself before spending a dime on fees.

How does Connecticut's revaluation schedule affect your assessed value?

Connecticut requires every municipality to revalue all real property at least once every five years ^[4]. Assessors call it a "general revaluation," or a reval. Between revals, your assessed value generally holds steady even as market prices move. That matters in a rising market. If your home's market value jumped 40% but your town hasn't revalued, your assessed value may still track the old, lower number.

After a reval, assessed values reset to 70% of the new market value, and the town usually drops the mill rate to avoid a revenue windfall. In theory the two changes cancel out. In practice the reset is never perfectly smooth, and individual owners can land well over or under their neighbors depending on how the mass appraisal model treats their specific property.

Revals open appeal windows. The best time to appeal is the year right after a reval, when errors are freshest, comparable sales are most relevant, and the assessor's methodology is most recently documented. If your town just finished a reval and your value spiked, check it now.

Towns must notify owners of new assessed values before the appeal deadline. Connecticut General Statutes Section 12-111 opens the Board of Assessment Appeals (BAA) window each February for appeals of October 1 assessments ^[4]. Miss it and you usually wait a full year, so calendar discipline pays.

The OPM tracks which towns are due for revaluation and which just finished one. Check the OPM Municipal Finance section to see where your town stands ^[7].

What exemptions reduce Connecticut property taxes?

Connecticut has several state-mandated exemptions that trim assessed value before the mill rate applies. The main ones:

Homeowner exemption (basic): A $1,000 reduction in assessed value for any Connecticut homeowner. At 30 mills, that saves $30 a year. Small, but claim it anyway.

Veterans' exemptions: Qualifying veterans get $1,500 to $3,000 knocked off assessed value depending on service era. Disabled veterans and surviving spouses can get more. Some towns add local exemptions on top of the state minimum ^[4].

Elderly and disabled circuit breaker (the "tax credit" program): The most valuable exemption for qualifying seniors and disabled owners. Administered by towns under CGS Section 12-129b, it applies a credit against the actual tax bill rather than a reduction in assessed value, and the amount scales with income. For fiscal year 2025 the maximum credit reached $1,250 for renters, with the homeowner amount varying by income. Towns may set higher local amounts ^[8].

Farm, forest, and open space land: Classified agricultural or forest land is assessed at use value instead of market value under CGS Section 12-107c, which can cut assessed value sharply on large rural parcels.

Manufacturing and certain business property: Various exemptions for new equipment and facilities exist to draw industry, though these mostly touch commercial and industrial owners.

Deadlines matter. Most exemptions require filing with the assessor's office by a set date, often November 1 for the following October 1 assessment. Miss the date and you wait another year. Contact your local assessor or check the OPM Municipal Finance section for town-specific rules ^[7].

How do you appeal a property tax assessment in Connecticut?

Connecticut's appeal process has three levels, and you work them in order.

Step 1: Board of Assessment Appeals (BAA). Every town has one. File a written appeal by February 20 (for October 1 real property assessments) unless a town moves the date by local ordinance ^[4]. The BAA schedules a hearing where you present your evidence. It can lower, raise, or hold your assessment. Decisions arrive by mail within a few weeks of the hearing.

Step 2: Superior Court. If the BAA gives you nothing, you can appeal to Connecticut Superior Court within two months of the BAA decision ^[4]. This is a formal legal proceeding. Most owners hire an attorney here, though you can represent yourself. Court is worth it only when the tax savings clear the litigation costs.

Step 3: No separate tax court. Connecticut has no standalone state tax court like some states run. Superior Court is the judicial venue.

For the BAA hearing, your best evidence is recent comparable sales (comps) of similar homes in your town that sold near October 1, the assessment date, at prices that imply a lower assessed value than yours. Pull comps from the town's own property database (many Connecticut towns publish records through Vision Government Solutions) or from MLS records ^[9]. A formal appraisal by a Connecticut-licensed appraiser strengthens your case but runs $300 to $600 and often isn't needed for a straightforward residential case.

The hearing is informal. You present your comps, explain why 70% of a lower market value is the right assessed figure, and the board asks questions. Most residential hearings finish in under 30 minutes. Dress cleanly, bring three copies of everything, and be specific about dollar amounts.

For how other high-tax Northeastern states run this, see how to appeal property taxes in New Jersey and how to appeal property taxes in New York.

What deadlines do Connecticut homeowners need to know?

Missing a deadline in Connecticut costs you an entire year of potential savings. Here are the dates that matter:

Event	Deadline / Date
Assessment date (grand list)	October 1 each year
BAA appeal filing deadline (real property)	February 20
BAA hearing window	February through March (towns vary)
BAA decision mailed	Within 1-2 months of hearing
Superior Court appeal after BAA	Within 2 months of BAA decision
Elderly / disabled exemption application	Typically November 1 (town-specific)
Veterans' exemption application	November 1 (town-specific)
Motor vehicle supplement appeals	Separate: 90 days from bill date

Motor vehicle assessments follow their own timeline. The vehicle grand list keys off October 1 ownership. If you moved out of state or sold a vehicle, file a claim with the assessor within 90 days of the tax bill date to get a credit or adjustment ^[5].

One note on February 20: Connecticut General Statutes Section 12-111 sets it as the statutory filing deadline, and while towns have some flexibility on when they hold hearings, the filing date is firm. Your written appeal must be received, more than postmarked, by February 20. Mail early or hand-deliver it to the assessor's office.

How does Connecticut compare to other high-tax states?

Connecticut lands in the top five or six states for property tax burden year after year. Using U.S. Census Bureau data, the Tax Foundation put Connecticut's median annual property tax payment at $6,153 in 2022, trailing only New Jersey ($9,488) among the highest per-household burdens ^[6].

The New Jersey comparison is useful because both states run a similar structure: no state property tax, full municipal authority, and a wide gap between high-rate urban centers and low-rate affluent suburbs. New Jersey's average effective rate of roughly 2.23% beats Connecticut's 1.79% average, but Connecticut's urban peaks (Hartford above 4.8%) rival New Jersey's most burdened towns.

Massachusetts runs lower. It has Proposition 2.5, which caps annual levy growth and keeps effective rates moderate even in cities. Connecticut has no statewide cap. Towns can and do raise mill rates hard from one year to the next when budgets demand it.

Curious how Connecticut sits in the full national ranking? States ranked by property tax covers every state with sourced effective rates. If the Connecticut burden has you eyeing an exit, states with no property tax is a useful reality check (spoiler: almost no state actually hits zero).

One takeaway holds across every national comparison. The variation inside Connecticut dwarfs the within-state variation of most other states. Picking your Connecticut town is arguably a bigger tax decision than picking between most states.

What are the biggest mistakes Connecticut homeowners make with property taxes?

Missing the February 20 BAA deadline is the most common and most expensive mistake. There is basically no cure. The next window is a full year out, so you pay an inflated bill for another 12 months.

The second mistake is trusting the assessor's value just because it came from a government office. Mass appraisal is imprecise by design. Connecticut assessors value tens of thousands of parcels at once with statistical models during a reval. Errors on individual homes are common, especially for properties with unusual features, recent damage, unpermitted additions, or a neighborhood with thin sales data.

The third mistake is paying a contingency firm 25% to 35% of any savings when the BAA process is genuinely open to homeowners who do basic comp research. A contingency firm earns its cut in complex commercial cases or court appeals. For a standard residential case at the BAA level, the whole job is two to four hours of research and a clear presentation. The TaxFightBack DIY appeal kit exists to help you skip the contingency fee and keep every dollar of savings.

The fourth mistake is ignoring motor vehicle and personal property taxes. Connecticut taxes vehicles as personal property. If an older car is assessed well above its current market value, or you were billed for a vehicle you no longer own, file the correction. The same 70% ratio applies: a car worth $10,000 today should carry a $7,000 assessed value.

How do I find my Connecticut town's assessor and current mill rate?

Every Connecticut town has an assessor's office, and many now publish online property record databases. The fastest path to your current assessment, mill rate, and exemption forms:

1. Go to your town's official .gov website and look for "Assessor's Office" or "Tax Collector." 2. OPM keeps a directory of municipal contacts and publishes mill rates every year at portal.ct.gov/OPM ^[7]. The direct URL for the mill rate table changes annually as OPM updates it, but the OPM homepage is stable and the table lives in the Municipal Finance section. 3. Vision Government Solutions (vgsi.com) and similar platforms host property databases for many Connecticut towns. Search your address to pull your current assessed value, property card, and recent comparable sales in the same town ^[9].

On your assessment card, check three things: the property description (square footage, bedroom count, garage, finished basement), the land assessment, and the building assessment. Any factual error in the property description is grounds for an appeal, and it's often the easiest case to win because you aren't arguing value, you're correcting a data error.

For how Connecticut's effective rates stack against your current or former state, property tax percentage by state gives you a direct comparison tool.

Frequently asked questions

What is the mill rate in Connecticut and how does it work?

A mill rate is the tax charged per $1,000 of assessed value. Connecticut assessed value is set at 70% of fair market value by state law. So if your home is worth $300,000, the assessed value is $210,000. At a 30-mill rate, your annual tax is $6,300. Connecticut mill rates range from roughly 11 in wealthy suburban towns to nearly 70 in Hartford.

Which Connecticut town has the highest property tax rate?

Hartford has consistently had one of the highest mill rates in Connecticut, at approximately 68.95 mills in fiscal year 2024-25. Bridgeport and Waterbury also top 50 mills. These cities carry high rates because of large tax-exempt property bases (hospitals, universities, state buildings) combined with heavy municipal spending needs and relatively lower average property values.

Which Connecticut town has the lowest property tax rate?

Salisbury, a handful of Litchfield County towns, and wealthy Fairfield County communities like Greenwich carry mill rates below 12. Greenwich's 2024-25 rate was about 11.1 mills. Low rates in these towns reflect very large grand lists (total assessed property value) per capita, which means less rate is needed to raise the same tax revenue per resident.

How often does Connecticut reassess property?

Connecticut law requires a general revaluation at least every five years. Assessments key off the October 1 grand list date each year, but the underlying valuation model updates fully only during a reval. Between revals, your assessed value typically stays flat even if market prices move. The year after a reval is the best time to appeal if your new assessment looks high.

What is the deadline to appeal my Connecticut property tax assessment?

The statutory deadline to file a written appeal with your town's Board of Assessment Appeals is February 20, under Connecticut General Statutes Section 12-111. This covers real property assessed on the prior October 1 grand list. There is no grace period. Miss it and you wait a full year. For motor vehicle appeals, the window is 90 days from the tax bill date.

Does Connecticut have a homestead exemption?

Connecticut has a basic homeowner exemption that cuts assessed value by $1,000, which saves only $20 to $70 a year depending on your mill rate. More meaningful relief exists for seniors and disabled owners through the state circuit breaker program (CGS Section 12-129b), which can provide a direct credit of up to $1,250 or more depending on income and the town's optional enhancements.

How is Connecticut's property tax calculated on motor vehicles?

Motor vehicles are taxed as personal property assessed at 70% of market value using state-published pricing guides. Since 2023, state law caps the mill rate on motor vehicles at 32.46 mills statewide, replacing a patchwork of local rates. If your vehicle is assessed above its actual market value, or if you sold or moved a vehicle, file a correction with the assessor within 90 days of the tax bill.

Can I appeal my Connecticut property tax without hiring a lawyer?

Yes. The Board of Assessment Appeals hearing is an administrative process built to be accessible to owners without legal help. You need comparable sales showing your home's market value supports a lower assessed value than the assessor set. Gather three to five recent sales of similar homes from your town's public property database, prepare a one-page summary, and present it at the hearing.

What evidence do I need for a Connecticut property tax appeal?

The strongest evidence is recent comparable sales (comps) of similar homes in the same town that sold near October 1, the assessment date, at prices implying a lower market value than the assessor used. Comps from your town's online property database work well. A licensed appraisal isn't required but strengthens the case. Also bring your property record card and flag any factual errors in square footage, room count, or condition.

How does Connecticut's property tax compare to New Jersey and New York?

New Jersey's average effective property tax rate of roughly 2.23% is higher than Connecticut's 1.79% average, and New York's varies widely by county (New York City runs lower than its suburbs). But Connecticut's highest-rate cities like Hartford top 4.5% effective rates, rivaling the most burdened New Jersey towns. Connecticut's statewide average consistently ranks 5th to 7th highest in the U.S.

Does where you live in Connecticut affect school taxes specifically?

Yes. The single largest driver of spending differences between Connecticut towns is education, and all of it flows through the local property tax mill rate. There is no separate school district levy like some other states use. Your single mill rate funds everything: schools, roads, police, fire, and debt service. Towns with expensive schools funded mostly locally, without much state aid, tend to carry higher mill rates.

Are there property tax relief programs for Connecticut seniors?

Yes. The state circuit breaker program for elderly and disabled homeowners (CGS Section 12-129b) provides direct tax credits based on income. The state also runs an elderly freeze program that locks assessed value for qualifying seniors above a certain age and below an income threshold. Application deadlines are typically May 15 for the circuit breaker and November 1 for exemptions. Check with your town assessor for local enhancements.

If my Connecticut town just did a revaluation and my value jumped, what should I do?

Act fast. The February 20 BAA deadline applies to the new values. Start by pulling your property card from your town's online database and checking for factual errors. Then find three to five comparable sales in your town from the prior 12 months with prices that suggest a lower market value than your new assessment implies. File the appeal in writing before the deadline, then bring your comps to the BAA hearing.

Sources

1. Connecticut Office of Policy and Management, Mill Rates by Town FY2024-25: Mill rates across Connecticut's 169 municipalities for fiscal year 2024-25, including Salisbury (~10.9) and Hartford (~68.95)
2. City of Hartford, Tax Collector Office: Hartford mill rate of approximately 68.95 for fiscal year 2024-25
3. Connecticut Conference of Municipalities, Municipal Fiscal Indicators: Large share of tax-exempt property in Connecticut cities depresses grand list and forces higher mill rates
4. Connecticut Office of Policy and Management, Motor Vehicle Mill Rate Cap: Statewide motor vehicle mill rate cap of 32.46 mills effective 2023, and 90-day window to file vehicle assessment corrections
5. Tax Foundation, Property Taxes by State (2023 data): Connecticut average effective property tax rate 1.79%, ranked 6th highest nationally; median annual payment $6,153; New Jersey median $9,488
6. Connecticut Office of Policy and Management, Municipal Finance: OPM publishes annual mill rate tables, equalization studies, revaluation schedules, and exemption summaries for all 169 municipalities
7. Connecticut Office of Policy and Management, Elderly and Disabled Homeowners Tax Relief Program: Circuit breaker program under CGS Section 12-129b provides income-based credit against the tax bill, up to $1,250 for renters in FY2025
8. Vision Government Solutions, Connecticut Municipal Property Database: Online property record databases used by many Connecticut towns to publish assessed values, property cards, and comparable sales
9. Lincoln Institute of Land Policy, 50-State Property Tax Comparison Study 2023: Comparison of effective property tax rates across states and within-state variation, showing Connecticut urban-suburban spread
10. Connecticut Office of Policy and Management, Equalization Study: OPM equalization study estimates each town's average assessment ratio relative to actual sale prices to monitor compliance with 70% mandate