Connecticut Property Tax Trends: What Fairfield County Homeowners Should Know in 2026

Property taxes are the single largest recurring cost of homeownership in Fairfield County, and they vary more than most buyers expect from one town to the next. Understanding how Connecticut's tax system works, and where Fairfield County towns fall within it, is essential for any purchase decision. The difference between a $12,000 annual tax bill and a $30,000 annual tax bill on a comparably priced home is not theoretical. It depends almost entirely on which town you buy in.

How Connecticut Property Taxes Work

Connecticut has no county-level government and no county property tax. Each of the state's 169 municipalities sets its own mill rate, collects its own property taxes, and funds its own services (schools, police, fire, roads, parks, and municipal administration). The mill rate is expressed as dollars per $1,000 of assessed value.

Assessed value in Connecticut is set at 70% of fair market value as determined by the most recent town-wide revaluation. If your home's fair market value is $1 million, the assessed value is $700,000. If the mill rate is 20.0, your annual tax bill is $14,000. That relationship (market value, times 70%, times mill rate, divided by 1,000) is the formula that drives every property tax bill in the state.

2026 Mill Rates Across Fairfield County

Mill rates in Fairfield County's primary residential towns range from approximately 11 to 28, and the spread creates meaningful differences in annual tax obligations. The following snapshot reflects recent adopted rates and is intended to illustrate the range, not to substitute for a current tax bill estimate on a specific property.

Greenwich operates with one of the lowest mill rates in the county, typically in the 11 to 12 range. On a home with a fair market value of $2 million, the annual tax bill runs approximately $15,400 to $16,800. Greenwich's large commercial tax base (hedge funds, financial services firms, corporate headquarters) subsidizes the residential rate and keeps it well below what a purely residential town would require.

Darien's mill rate sits in the 16 to 17 range. The same $2 million home carries an annual tax bill of approximately $22,400 to $23,800. Darien has no significant commercial tax base, so residential properties shoulder nearly the full municipal budget. New Canaan's rate is comparable, producing a similar annual obligation.

Westport's mill rate falls in the 17 to 18 range, producing a tax bill of $23,800 to $25,200 on a $2 million home. Westport's commercial corridors contribute to the base, but the town's school and infrastructure spending keeps the rate from dropping further.

Stamford's mill rate is higher than the smaller shoreline towns (approximately 24 to 26), reflecting the city's broader service obligations and urban infrastructure costs. A $2 million home in Stamford carries a tax bill of approximately $33,600 to $36,400. However, home prices in Stamford are generally lower than in Greenwich or Westport, so the effective burden at comparable purchase prices is not as dramatic as the mill rate alone suggests.

Norwalk operates with a mill rate similar to Stamford (approximately 24 to 26). Wilton and Ridgefield sit in the 24 to 27 range; both are residential towns with limited commercial tax bases, and the well-funded school systems consume the largest share of the budget.

Revaluation Cycles and What They Mean

Connecticut requires each municipality to conduct a property revaluation every five years. During a revaluation, every property in town is reassessed based on current market conditions. The most recent revaluation data determines your assessed value going forward.

Revaluations can shift your tax bill even if the mill rate stays the same. If your property appreciated faster than the town average between revaluations, your assessed value increases by a larger percentage, and your tax bill rises accordingly. Conversely, if your property underperformed the town average, your relative burden decreases.

Buyers should always check when the most recent revaluation occurred in their target town and whether a new one is scheduled within the first few years of ownership. A revaluation in year two of ownership could increase your tax bill by 10% to 20% if the property has appreciated since the last assessment, and that increase is not always reflected in the purchase price.

How Taxes Affect the Buy Decision

I build a full carrying cost analysis for every buyer I work with, and property taxes are the largest variable in that model after the mortgage payment itself. The difference between Greenwich's mill rate and Stamford's mill rate, on a $1.5 million home, translates to approximately $10,000 to $14,000 annually. Over a ten-year ownership period, that is $100,000 to $140,000 in additional outflow.

That number shapes the decision in two ways. First, it affects the total monthly housing cost, which determines how much mortgage a buyer can service. A buyer approved for a $2 million purchase in Greenwich may only be able to afford $1.7 million in Stamford at the same monthly payment, because the tax differential absorbs the headroom.

Second, it affects resale positioning. Homes in low-tax towns carry a premium precisely because buyers capitalize the tax savings into the purchase price. Greenwich homes trade at higher price-to-square-foot ratios in part because the low tax rate makes the total carrying cost more competitive than the sticker price alone suggests.

Property taxes are one of the most consequential factors in choosing where to buy in Fairfield County, and the town-by-town variation is significant. I include a full tax and carrying cost comparison in every buyer consultation. If you want to see how the numbers stack up across the towns on your list, reach out anytime. Matt Caiola, Higgins Group Private Brokerage.