Connecticut Tax Authority
Official Connecticut state tax information, forms, and filing resources.
Source: Connecticut Department of RevenuewebpageApplies to: 2025
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Connecticut Income Tax
Connecticut uses progressive income tax brackets. Each rate applies only to income within that range, similar to the federal system.
Income Tax Brackets
The U.S. federal income tax uses seven progressive brackets with rates from 10% to 37%. Each bracket rate only applies to the income within that range — not to your entire income.
Last reviewed: 2027-01-15 • State: CT