Estimate your Connecticut property tax based on the state's 1.92% average effective rate. Enter your home value for an instant, free calculation.
Enter any tax exemption amount you qualify for in Connecticut
Connecticut has among the highest property taxes in the country, and it's run entirely by cities and towns rather than counties. Homes are taxed on 70% of market value, and each town's mill rate drives wide bill-to-bill variation.
Connecticut is administered by cities and towns, not counties. Assessors value property at least every five years and apply a uniform 70% assessment ratio, so a home is taxed on 70% of market value. Each municipality then sets its own mill rate (one mill = $1 per $1,000 of assessed value) based on its budget, producing wide town-to-town variation.
| Home Value | Estimated Annual Tax | Monthly (Escrow) |
|---|---|---|
| $250,000 | $4,800 | $400/mo |
| $354,000 (median) | $6,797 | $566/mo |
| $600,000 | $11,520 | $960/mo |
Effective rates vary within Connecticut. These figures are median-tax-to-median-value estimates from U.S. Census ACS data (2019–2023 ACS 5-year (SmartAsset)) for some of the most populous counties:
| County | Effective Rate |
|---|---|
| Fairfield County | 1.83% |
| Hartford County | 2.40% |
| New Haven County | 2.38% |
| Litchfield County | 2.07% |
| Middlesex County | 2.01% |
| New London County | 1.95% |
| Tolland County | 2.24% |
| Windham County | 1.93% |
Among these counties, effective rates range from about 1.83% in Fairfield County to 2.40% in Hartford County. Your actual rate depends on the local mill/millage set by your county, city, and school district.
Connecticut has no general statewide homestead exemption reducing assessed value for all owner-occupants; relief comes through statewide veteran and elderly/disabled programs plus optional local-option credits individual towns may adopt.
Honorably discharged veterans receive a statewide minimum exemption of $1,500 of assessed value, with larger amounts for service-connected disability, and many towns add local credits. The Homeowners' Elderly/Disabled ('Circuit Breaker') program gives owners 65+ or totally disabled, under income limits (roughly $53,400 single / $65,000 married for 2026), a credit up to about $1,000–$1,250; applications go to the local assessor February 1–May 15.
Municipalities bill on their own calendars, but commonly bills under $250 are due in full July 1, while bills of $250 or more split into installments due July 1 and January 1 (some towns bill quarterly). A one-month grace period generally applies, and delinquent taxes accrue 18% annual interest (1.5% per month).
An owner disputing an assessment files a written appeal with the town's Board of Assessment Appeals, with a statutory deadline of February 20 (some towns extend to March 20). The board hears appeals in spring, and its decision can be appealed to Superior Court.
Connecticut has among the highest property taxes in the U.S., with a statewide effective rate around 1.7%–2.0% of home value and a median bill near $6,600. Rates are set by each town's mill rate, so bills vary widely.
Assessors value your home at market value at least every five years, then apply the statewide 70% assessment ratio. A $500,000 home is assessed at $350,000, and your town's mill rate is applied to that figure.
Most towns bill taxes due July 1, with larger bills split into a second installment due January 1. A short grace period applies, after which delinquent taxes accrue 18% annual interest (1.5% per month).