How does Connecticut’s tax code compare? Connecticut has a graduated state individual income tax, with rates ranging from 2.00 percent to 6.99 percent. Connecticut has a 7.5 percent corporate income tax rate. Connecticut also has a 6.35 percent state sales tax rate and does not have local sales taxes. Connecticut has a 1.78 percent effective property tax rate on owner-occupied housing value.
Connecticut has an estate tax. Connecticut has a 25 cents per gallon gas tax rate and a $4.35 cigarette excise tax rate. The State of Connecticut collects $9,469 in state and local tax collections per capita. Connecticut has $14,903 in state and local debt per capita and has a 58 percent funded ratio of public pension plans. Connecticut’s tax system ranks 47th overall on the 2025 State Tax Competitiveness Index.
Each state’s tax code is a multifaceted system with many moving parts, and Connecticut is no exception. The first step towards understanding Connecticut’s tax code is knowing the basics. How does Connecticut collect tax revenue? Click the tabs below to learn more! You can also explore our state tax maps, which are compiled from our annual publication, Facts & Figures 2024: How Does Your State Compare?
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The State Tax Competitiveness Index enables policymakers, taxpayers, and business leaders to gauge how their states’ tax systems compare. While there are many ways to show how much state governments collect in taxes, the Index evaluates how well states structure their tax systems and provides a road map for improvement.
115 min read
Facts & Figures serves as a one-stop state tax data resource that compares all 50 states on over 40 measures of tax rates, collections, burdens, and more.
2 min read
Tax burdens rose across the country as pandemic-era economic changes caused taxable income, activities, and property values to rise faster than net national product. Tax burdens in 2020, 2021, and 2022 are all higher than in any other year since 1978.
24 min read
Individual income taxes are a major source of state government revenue, accounting for more than a third of state tax collections. How do income taxes compare in your state?
8 min read
Graduated corporate rates are inequitable—that is, the size of a corporation bears no necessary relation to the income levels of the owners.
7 min read
Retail sales taxes are an essential part of most states’ revenue toolkits, responsible for 32 percent of state tax collections and 13 percent of local tax collections (24 percent of combined collections).
9 min read
Tax avoidance is a natural consequence of tax policy. Policymakers should consider the unintended consequences, both to public health and public coffers, of the excise taxes and regulatory regimes for cigarettes and other nicotine products.
5 min read
Many policies, such as minimum wage levels, tax brackets, and means-tested public benefit income thresholds, are denominated in nominal dollars, even though a dollar in one region may go much further than a dollar in another. Lawmakers should keep that reality in mind as they make changes to tax and economic policies.
6 min read
Consumers legally wagered more than $100 billion on sporting contests in 2023, creating more than $1.8 billion in state revenue. Sports betting is now legal in 38 states and DC, and the landscape is rapidly evolving.
18 min read
Recent data suggest that tax competitiveness plays a significant role in residents’ relocation decisions.
3 min read
Growing cigarette tax levels and differentials have made cigarette smuggling both a national problem and a lucrative criminal enterprise.
16 min read
In addition to the federal estate tax, with a top rate of 40 percent, 12 states and DC impose additional estate taxes, while six states levy inheritance taxes.
7 min read
Over 500 million premium cigars were sold in the United States in 2023. With each sale comes a complex tax landscape.
4 min read
Policymakers can and should address taxpayers’ legitimate grievances about out-of-control property tax bills, but they should do so without upending a system of taxation that is more efficient, fair, and pro-growth, and better suited to municipal finance, than any of the alternatives.
39 min read
The State Tax Competitiveness Index enables policymakers, taxpayers, and business leaders to gauge how their states’ tax systems compare. While there are many ways to show how much state governments collect in taxes, the Index evaluates how well states structure their tax systems and provides a road map for improvement.
115 min read
States that tax GILTI increase filing complexity, drive up the cost of tax compliance, and introduce unnecessary economic uncertainty and legal risk. 21 states and DC continue to tax GILTI despite these challenges.
6 min read