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Tool · Fintech

Connecticut income tax calculator

Connecticut state and federal income tax for 2025 or 2026.

Other income
Family
Deductions and adjustments
Federal deduction up to $25,000, 2025-2028.
The extra half-time pay; federal deduction up to $12,500 ($25,000 joint).

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How it’s calculated

2025: 2% to 6.99%, with exemption, phase-out and recapture tables. 2026: Same tables (not indexed).

The calculator applies Connecticut's own starting income, deductions, exemptions and main credits for the year chosen. The sources for every figure are linked under the Connecticut result.