Connecticut Income
Tax Rates & Rules
Connecticut has a progressive state income tax with rates up to 6.99%. Here's how the brackets break down.
Connecticut Income Tax Brackets
2025 tax year rates, most recently confirmed by the state Department of Revenue.
Single / Individual
| Taxable Income | Rate |
|---|---|
| $0 – $10,000 | 2% |
| $10,000 – $50,000 | 4.5% |
| $50,000 – $100,000 | 5.5% |
| $100,000 – $200,000 | 6% |
| $200,000 – $250,000 | 6.5% |
| $250,000 – $500,000 | 6.9% |
| Over $500,000 | 6.99% |
Married Filing Jointly
| Taxable Income | Rate |
|---|---|
| $0 – $20,000 | 2% |
| $20,000 – $100,000 | 4.5% |
| $100,000 – $200,000 | 5.5% |
| $200,000 – $400,000 | 6% |
| $400,000 – $500,000 | 6.5% |
| $500,000 – $1,000,000 | 6.9% |
| Over $1,000,000 | 6.99% |
Standard deduction: $15,000 (Single) / $24,000 (MFJ). Connecticut's personal-exemption phase-out and benefit-recapture provisions for high earners are not modeled here.
Sources: CT DRS — Form CT-1040 TCS Tax Calculation Schedule. Last verified: August 14, 2026.
How Connecticut Income Tax Works
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Frequently Asked Questions
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