Taxes in Connecticut
Every state-level tax in Connecticut, in one place—income, sales, property, corporate, estate, transfer, and excise taxes. Figures sourced from the IRS, U.S. Census Bureau, and Tax Foundation.
Connecticut's estate tax stands out for a simple reason: its $15,000,000 exemption exactly matches the federal threshold, so the state imposes no estate tax beyond what Washington already collects. For residents, that alignment is the whole story. Estates at or below $15,000,000 owe Connecticut nothing, and those above it face a top rate of 12% — meaningful, but layered on top of federal liability rather than added before it. Anyone weighing a move to Connecticut should treat this as a planning advantage, since the state has effectively ceded the estate-tax field to the federal government rather than staking out its own lower threshold.
State income tax
6.99% 7 brackets · graduated.
Sales tax
The combined state + local sales tax rate is 6.35%. State rate 6.35% plus an average 0.00% local.
Estate & inheritance tax
Connecticut taxes estates over $15,000,000 at a top rate of 12%.
Real estate transfer tax
Connecticut levies a transfer tax of 0.75%–2.75%3 (graduated by price).
Cigarette Tax
Connecticut levies a cigarette tax of $4.35 per pack of 20. Federal excise adds $1.01 per pack.
Gas Tax
Connecticut levies a gas tax of 25.00¢ per gallon. Federal excise adds 18.4¢ per gallon. Excludes local taxes and environmental/carbon-related costs.
Beer Tax
Connecticut levies a beer tax of $0.194 per gallon. Federal excise adds $0.113–$0.581 per gallon depending on brewery size.
Wine Tax
Connecticut levies a wine tax of $0.790 per gallon. Federal excise adds $1.07 per gallon (11% still wine). MS, NH, PA, UT, WY are control states with no published excise rate.
Spirits Tax
Connecticut levies a spirits tax of $5.940 per gallon. Federal excise adds $5.40 per gallon (40% ABV). NH and WY are control states with an effective $0.00 rate.
Property tax by county
The state's median county effective property tax rate is 1.67%. Compare counties below for local rates.
Counties in Connecticut by property tax rate
| County | Effective rate | Median home value |
|---|---|---|
| Greater Bridgeport Planning Region | 2.02% | $428,800 |
| Capitol Planning Region | 1.99% | $323,700 |
| South Central Connecticut Planning Region | 1.91% | $353,100 |
| Naugatuck Valley Planning Region | 1.88% | $317,700 |
| Lower Connecticut River Valley Planning Region | 1.67% | $379,700 |
| Northwest Hills Planning Region | 1.67% | $335,600 |
| Southeastern Connecticut Planning Region | 1.62% | $323,400 |
| Western Connecticut Planning Region | 1.42% | $652,900 |
| Northeastern Connecticut Planning Region | 1.42% | $307,600 |