Sheet CT · 2026 rules
Connecticut Property Tax Calculator
The Danbury assessor explains that a Connecticut real-estate assessment equals 70% of the estimated fair market value established in a revaluation year. That assessed figure is the base used with local millage. It is not a 70% tax on the property and should not be confused with the ratio of statewide Census medians.
Rules verified 3 primary sources Editorial policy
Estimate your 2026 Connecticut bill
- Tax — Town and district levies —
- Credits subtracted —
- Fixed charges added —
How Connecticut turns value into a tax bill
| Step | Connecticut rule | Source |
|---|---|---|
| Value | A revaluation-year estimate can differ from an owner’s current asking price or automated home-value estimate. Applying a town’s mill rate to the full advertised market value would skip the assessment conversion. Use the current grand-list assessment and applicable exemptions supplied by the assessor. | [1] |
| Assessment | Choose the actual approved property class: approval required; Ordinary 70% statutory assessment: 70%; Hartford or phased assessment: enter approved assessment as value: 100% | [1][2][3] |
| Annual limit | Use the current assessing-year value; a town or county levy-growth limitation is not a parcel bill cap. | |
| Exemptions | Relief outside the specifically modeled approvals must be taken from the assessing authority. | |
| Rate | Town and district levies: local rate — you enter it.Town and district levies from the current parcel tax statement; local rate is not a statewide average. |
Connecticut millage uses assessed real-estate value
A revaluation-year estimate can differ from an owner’s current asking price or automated home-value estimate. Applying a town’s mill rate to the full advertised market value would skip the assessment conversion. Use the current grand-list assessment and applicable exemptions supplied by the assessor.
Identify the town’s tax year, taxable assessment and total applicable real-estate millage. Do not borrow a motor-vehicle mill-rate cap for a house. Where a district or exemption has a distinct base, use another levy group rather than adding the rates against an unsupported common value.
At an illustrative $400,000 revaluation value, a 70% assessment is $280,000. If that is also the approved taxable base and the applicable rate is 30 mills, the annual levy is $8,400, or $700 when divided into twelve equal monthly amounts.
The 70% branch uses the assessor’s revaluation-year full value, not an automatic estimate of today’s sale price. Hartford’s special residential ratio and municipal revaluation phase-ins require the prepared assessment branch. That branch taxes the assessment you enter once and does not multiply it by 70% again.
Worked example
Ordinary assessment: $400,000 ×70%=$280,000; illustrative 30 mills produces $8,400 before approved credits.
| Line | Taxable value | Tax |
|---|---|---|
| Town and district levies at 30 mills | $280,000.00 | $8,400.00 |
| Annual total | $8,400.00 |
Left to your local bill
- Mixed-use and non residential parcels, new construction and separately approved special-purpose valuation.
- Automatic eligibility decisions; use the approval and tax year shown by the assessor.
- Local levy rates, special assessments, penalties and interest; actual rates must be entered.
- Eligibility and amounts for veteran, elderly, disabled and locally adopted relief; enter their approved assessed-value exemption or bill credit.
Census context, not a rate
American Community Survey 2020–2024: median owner-occupied value $366,900 (±$1,621), median real-estate taxes $6,643 (±$25). Dividing one by the other gives 1.81% for Connecticut. Tables B25077 and B25103; why it is only context.
Sources
- assessor.danbury-ct.govDanbury Assessor: Real Estate, read .
- portal.ct.govConnecticut OPM: Revaluation Phase-In Overview, read .
- hartfordct.govHartford Tax Collector: Assessment and Mill Rate, read .
Bordering jurisdictions
Rules verified by the Property Tax Calculator Editorial Team. Report a correction