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
States can better position themselves for success by moving away from economically-damaging taxes like the capital stock tax.
4 min read
Individual income taxes are a major source of state government revenue, accounting for more than a third of state tax collections:
9 min read
Despite robust revenues, some state lawmakers are champing at the bit to raise taxes on higher-income households, sometimes to extraordinary levels.
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If your state issued tax rebates last year, you might have to pay federal income tax on the rebate you received. Maybe. Who knows? Unfortunately, not the IRS—at least not yet.
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While many factors influence business location and investment decisions, sales taxes are something within policymakers’ control that can have immediate impacts.
11 min read
At the end of 2022, prices were 14.6 percent higher than they were two years prior. That’s the fastest inflation rate over any two calendar years since the stagflation era of the late 1970s. State policymakers are understandably interested in bringing any tools at their disposal to bear on the problem. And many of them are reaching for tax policy solutions.
7 min read
New Jersey levies the highest top statutory corporate tax rate at 11.5 percent, followed by Minnesota (9.8 percent) and Illinois (9.50 percent). Alaska and Pennsylvania levy top statutory corporate tax rates of 9.40 percent and 8.99 percent, respectively.
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In a coordinated effort, lawmakers in seven states that collectively house about 60 percent of the nation’s wealth—California, Connecticut, Hawaii, Illinois, Maryland, New York, and Washington—are introducing wealth tax legislation on Thursday.
7 min read
The pandemic has accelerated changes to the way we live and work, making it far easier for people to move—and they have. As states work to maintain their competitive advantage, they should pay attention to where people are moving, and try to understand why.
5 min read
Most of the 2023 state tax changes represent net tax reductions, the result of an unprecedented wave of rate reductions and other tax cuts in the past two years as states respond to burgeoning revenues, greater tax competition in an era of enhanced mobility, and the impact of high inflation on residents.
20 min read