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Connecticut layers a seven-bracket progressive tax from 2% up to 6.99% for 2026. The brackets rise quickly: 2% on your first $10,000, 5% to $50,000, 5.5% to $100,000, then 6%, 6.5%, 6.9% and 6.99% at the top.

That phase-out design means middle-income earners with moderate salaries often lose most of their exemption. On $85,000 single, the personal exemption is largely phased out, and Connecticut tax runs about $4,240 — an effective 5% of gross. High earners above $500,000 face an extra complexity: the 6.99% rate applies to ALL income once you cross the threshold in certain phase-out zones (an effective bump that functions like a 7%–8% marginal rate for a narrow income band).

Connecticut fully exempts Social Security and phases out pension-income taxation for lower earners, but 401(k)/IRA withdrawals are taxed at full rates. There's no city income tax — Hartford, New Haven, and Bridgeport add nothing to wages — but property tax is where Connecticut hurts: 2.15% average effective, third-highest nationally.

Combined sales tax is a moderate 6.35% (6.99% on certain goods). Connecticut has one of the highest per-capita total tax burdens in the country — not because of any single rate, but because the property tax, income tax phase-outs, and inheritance tax (estates above $5.1M) all stack together.

Filing in Connecticut: the resident return is Form CT-1040, due to the Connecticut Department of Revenue Services by April 15. Connecticut offers free e-file, and employees can submit Form CT-W4 to fine-tune withholding beyond the federal W-4.