Travis Bunn

Founder, AppealDesk · Published March 1, 2026

How Much Can Property Taxes Increase in Connecticut? 2026 Complete Guide

Updated July 2026

Connecticut Assesses Property at 70% of Market Value

Connecticut's system rests on two numbers. The first is your assessed value, which by state law (CGS 12-62a) is a uniform 70% of your property's fair market value. Every town in the state uses the same 70% ratio, so a home the assessor believes is worth $300,000 on the open market carries an assessed value of $210,000. That 70% figure is not a discount and it is not a cap. It is simply the fraction of market value the tax math runs on, and it applies identically to every property in all 169 municipalities.

The second number is the mill rate, which your town sets each year when it adopts its budget. One mill equals one dollar of tax per $1,000 of assessed value. Your annual bill is the mill rate applied to the 70% assessed value. That $300,000 home, assessed at $210,000, would owe $6,300 a year in a town with a 30 mill rate, or $4,200 in a town at 20 mills. Same house, very different bill, depending entirely on which side of a town line it sits on.

Notice what is missing from that formula: any cap. Nothing in Connecticut law limits how much the assessed value can rise at revaluation, and nothing limits how high a town can set its mill rate. Both halves of your bill are uncapped, which is why the accuracy of the market value behind your assessment carries so much weight here.

What Is Connecticut's Property Tax Rate in 2026?

There is no single Connecticut property tax rate. Each of the state's 169 municipalities sets its own mill rate annually, and rates vary widely from town to town because every budget, grand list, and mix of state aid is different. The rate that matters to you is your own town's, published each spring once the budget passes. Your assessor's or tax collector's office posts it, and it can change every single year.

The only quasi-limit anywhere in the system is a conditional municipal spending cap that applies solely to towns receiving Municipal Revenue Sharing grants, a group concentrated among towns with mill rates over 25. Even there, the penalty for exceeding the cap is a reduction in the town's grant, not any restriction on the tax increase itself. Nothing legally blocks a Connecticut mill rate from rising, and there is no voter-override mechanism or operational-levy ceiling of the kind neighboring states use. If you have read that Connecticut has a 2.5% levy limit, that is Massachusetts-style mechanics being described, not Connecticut law.

Connecticut's Average Effective Property Tax Rate in 2026

Connecticut is regularly ranked among the highest property tax states in the country, but any specific statewide average effective rate you see quoted depends entirely on the source's methodology and vintage, and the same is true of statewide average bill figures. We do not publish a number we cannot source, so treat the averages floating around as rough context rather than as anything that predicts your bill.

What is verifiable is the mechanism, and the mechanism is what actually determines what you pay: an uncapped assessment set at 70% of market value, multiplied by an uncapped mill rate your town chooses each spring. If you want your own effective rate, divide your annual tax bill by what your home would sell for today. That single calculation tells you more than any state average, because it is built from your town's rate and your own assessed value.

Do Property Taxes Go Up Every Year in Connecticut?

They can, but the two halves of your bill move on different clocks. The mill rate is annual: every town resets it each year with its budget, so your bill can rise every single year even if your assessment never changes. The assessment side moves in five-year steps. State law (CGS 12-62) requires each town to run a full revaluation at least every five years, and between revaluations your assessed value generally stays flat.

That structure produces Connecticut's signature pattern: quiet years, then a jump. For four or five years your assessment sits still while the mill rate drifts. Then revaluation lands, your assessed value snaps to 70% of current market all at once, and if your neighborhood appreciated faster than the rest of town, your share of the levy jumps with it. There is no phase-in requirement and no cap softening the landing.

It is worth being precise about what revaluation does and does not do. Revaluation is revenue-neutral in aggregate: the town's total levy is set by its budget, not by the revaluation. What revaluation changes is how that levy is divided. If your value rose more than the town-wide average, your slice grows. If it rose less, your slice can actually shrink even as your assessed value goes up. Your bill is driven by how your number moved relative to everyone else's, which is exactly why the accuracy of your individual number matters so much.

Connecticut Property Tax News: The 2025-2026 Revaluation Wave

The biggest Connecticut property tax story right now is not a new law. We found no enacted 2024-2026 legislation creating or changing assessment caps or levy limits; a 2025 Republican proposal to offset property tax hikes with unbudgeted state funds remained a proposal only. The real story is administrative: a large wave of towns, including Fairfield, Westport, New Haven, and dozens more, ran their five-year revaluations as of October 1, 2025.

Those October 2025 values are the ones that drive tax bills from July 1, 2026 through June 30, 2031. For many of these towns it is the first revaluation since the pandemic-era run-up in home prices, and the burden is shifting toward residential property as house values snapped up to the current market all at once. If you own a home in a town that revalued on October 1, 2025, the notice you received reflects five years of appreciation compressed into a single adjustment, and it is the number your next five years of bills will be figured from. A mistake in it is not a one-year mistake.

Why Are Property Taxes So High in Connecticut?

Three structural facts do most of the work. Connecticut municipalities lean heavily on the property tax to fund local government and schools, because towns have few other revenue tools. Nothing caps the system: no assessment cap, no levy cap, no rate ceiling, so there is no legal brake as budgets grow. And service costs and home values across much of the state are high, and an uncapped percentage of a high value is a large bill.

Compare that with states like California, Florida, or Texas, where assessment caps or levy limits blunt year-over-year growth for existing owners. Connecticut made the opposite trade: assessments track the market fully at each revaluation, which keeps the burden distributed by current value rather than by how long you have owned, but it also means long-time owners in appreciating neighborhoods get no shelter from the market. High reliance, no caps, high values. That is the whole answer, and none of it is going to be fixed by a form you file.

Does Connecticut Have a Homestead Exemption?

Connecticut has no general homestead exemption of the kind Florida or Texas homeowners know, where every owner-occupant automatically gets a slice of value knocked off before taxes are figured. There is no across-the-board exemption amount to look up, because none exists for ordinary owner-occupants. Connecticut also has no acquisition-value protection, so buying, selling, or transferring a property does not trigger or forfeit any cap. There is nothing to trigger.

What Connecticut has instead is targeted relief, most importantly the Elderly/Disabled Circuit Breaker credit (CGS 12-170aa/bb/cc). For the 2026 program the income limits are $46,300 for single filers and $56,500 for married couples, based on 2025 income. Qualifying homeowners must be age 65 or older, or totally disabled. The credit ranges from $150 to $1,250 depending on income and filing status, with a maximum of $1,000 for single filers and $1,250 for married couples. Applications go to your local assessor between February 1 and May 15. If you or a family member is near those income limits, this is the one meaningful statewide program worth checking, and towns may layer their own local-option relief on top; ask your assessor what your town offers.

Why Did My Property Taxes Go Up So Much This Year?

In Connecticut there are only two levers, so the diagnosis is short. Either your town raised its mill rate with the new budget, or your assessment changed, which in practice means your town revalued. If your town did not revalue recently, the increase is the mill rate: compare this year's rate to last year's on your bill or the town website, and the entire change should trace to that. There is no third explanation hiding in the paperwork.

If your town did just revalue, especially in the October 1, 2025 wave, the increase means your property's value rose more than the town-wide average. Because revaluation is revenue-neutral in aggregate, a big jump in your bill is a statement about your specific number relative to your neighbors' numbers. That statement came out of a mass-appraisal model, not an individual inspection, and models miss things: an outdated condition rating, wrong square footage or bedroom count, comparable sales drawn from a hotter pocket of town. When the increase is concentrated on your property rather than spread across the town, checking whether the underlying value is actually right is the first move, because it is the only part of the equation you can individually challenge.

Will Property Taxes Go Down in 2026?

For most Connecticut homeowners, no. Town budgets rarely shrink, and nothing in state law forces rates down. In revaluation towns mill rates typically get adjusted downward after values jump, because the levy is budget-driven rather than value-driven, but that adjustment only offsets the average increase. Owners whose values rose more than average will still see higher bills starting July 1, 2026, and those October 2025 values stay in place through June 30, 2031.

The realistic path to a lower bill in 2026 is not waiting for the market or the legislature. It is the appeal process. If your assessed value overstates what your home was worth on the valuation date, correcting it lowers every bill built on it for the rest of the five-year cycle.

Frequently Asked Questions

How much can my Connecticut property taxes increase this year?

There is no limit. Connecticut caps neither assessment increases nor mill rates, so your bill can rise by whatever the combination of your town's new budget and your revaluation result produces. The only recourse against an excessive increase is challenging the assessed value itself.

How often is my property reassessed in Connecticut?

State law requires a town-wide revaluation at least every five years (CGS 12-62). Between revaluations your assessed value generally stays flat. Many towns revalued as of October 1, 2025, and those values drive bills from July 1, 2026 through June 30, 2031.

Is there really no levy cap in Connecticut?

Correct. The closest thing is a conditional spending cap that applies only to towns receiving Municipal Revenue Sharing grants, concentrated among towns with mill rates over 25. Even for those towns, exceeding the cap costs grant money; it never blocks the tax increase. No mechanism in Connecticut law limits your town's mill rate.

When is the deadline to appeal my Connecticut assessment?

The written appeal to your Board of Assessment Appeals is due at the assessor's office by February 20 (February 20, 2026 for the current cycle). Some towns extend it to March 20. Confirm your town's exact deadline with the assessor, because missing it usually means waiting another year.

What relief exists for seniors or disabled homeowners?

The Circuit Breaker credit (CGS 12-170aa/bb/cc) provides $150 to $1,250 off the bill for homeowners age 65 or older or totally disabled, with 2026 income limits of $46,300 single and $56,500 married based on 2025 income. Apply with your assessor between February 1 and May 15.

Related Resources

If your assessment looks high, start with our step-by-step guide to how to appeal property taxes in Connecticut. Not sure the effort pays off? See is it worth appealing property taxes for the math, and what evidence you need for a property tax appeal for what a winning file actually contains.

This article provides general information about Connecticut property tax law as of July 2026. Tax laws change and local rules vary by municipality. Confirm deadlines and program details with your town assessor or a tax professional before acting.