Income Tax in Connecticut: Complete Guide 2026
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Income Tax in Connecticut: Complete Guide 2026
Tax information is for educational purposes only and does not constitute tax advice. Consult a licensed tax professional for your specific situation.
Connecticut imposes a graduated income tax with seven brackets, with rates ranging from ~3.00% to ~6.99%. The state also applies a unique “tax recapture” mechanism that effectively increases rates for higher-income filers beyond what the bracket table alone suggests. Connecticut does not levy local income taxes, but the combination of the graduated rates and recapture provisions makes it one of the higher-tax states in New England. This guide covers the bracket structure, credits, deductions, and planning strategies for Connecticut filers.
Connecticut Income Tax Rates (2026)
Single Filers
| Taxable Income | Rate |
|---|---|
| $0 — ~$10,000 | ~3.00% |
| ~$10,001 — ~$50,000 | ~5.00% |
| ~$50,001 — ~$100,000 | ~5.50% |
| ~$100,001 — ~$200,000 | ~6.00% |
| ~$200,001 — ~$250,000 | ~6.50% |
| ~$250,001 — ~$500,000 | ~6.90% |
| Over ~$500,000 | ~6.99% |
Married Filing Jointly
| Taxable Income | Rate |
|---|---|
| $0 — ~$20,000 | ~3.00% |
| ~$20,001 — ~$100,000 | ~5.00% |
| ~$100,001 — ~$200,000 | ~5.50% |
| ~$200,001 — ~$400,000 | ~6.00% |
| ~$400,001 — ~$500,000 | ~6.50% |
| ~$500,001 — ~$1,000,000 | ~6.90% |
| Over ~$1,000,000 | ~6.99% |
How Connecticut Income Tax Works
Graduated Brackets with Recapture
Connecticut’s bracket structure is progressive, but the state also applies a “recapture” tax that phases out the benefit of lower brackets for higher-income filers. This recapture adds an additional ~3% on income above certain thresholds (approximately ~$200,000 for single filers and ~$400,000 for joint filers), effectively raising the marginal rate beyond the stated ~6.99% for a range of income.
The recapture is capped, so once the benefit of lower brackets has been fully recaptured, the effective rate stabilizes at the top bracket rate applied to all income.
Personal Tax Credits (Exemptions)
Connecticut does not use traditional deductions or exemptions. Instead, it provides a personal tax credit that reduces your computed tax:
| Filing Status | Maximum Credit |
|---|---|
| Single | ~$15,000 (at ~75% phase-out rate) |
| Married filing jointly | ~$24,000 (at ~75% phase-out rate) |
The personal credit is a percentage of your tax liability, and it phases out as Connecticut AGI increases. For filers with AGI above ~$56,500 (single) or ~$100,500 (joint), the credit begins to decrease, and it is fully eliminated at higher income levels.
Connecticut AGI
Connecticut starts with federal AGI and applies its own modifications. Notable additions include:
- Interest on non-Connecticut municipal bonds
- Certain lump-sum distributions
Notable subtractions include:
- Social Security benefits (if included in federal AGI and meeting income thresholds)
- Military retirement pay
- Teacher pension income (partial subtraction for qualifying educators)
Key Connecticut Tax Credits
- Earned Income Credit: Connecticut offers a refundable EITC equal to ~30.5% of the federal credit.
- Property Tax Credit: Homeowners and renters age 65+ (or disabled) with income under ~$45,800 may qualify for a property tax credit of up to ~$1,250.
- Child Tax Rebate: Connecticut has periodically offered child tax rebates; check current availability for 2026.
- Angel Investor Credit: A credit for investments in qualifying Connecticut startups.
- Film Production Credit: Credits for qualifying production expenditures in Connecticut.
Who Must File in Connecticut
You must file a Connecticut return (Form CT-1040) if:
- You are a Connecticut resident with income exceeding the personal credit amount
- You are a part-year resident or nonresident with Connecticut-source income
- You owe the recapture tax or any other Connecticut tax
- You want to claim a refund of Connecticut withholding
The filing deadline is April 15.
Comparison to National Average
| State | Top Income Tax Rate | Brackets |
|---|---|---|
| Connecticut | ~6.99% | 7 |
| Massachusetts | ~9.00% | 1 (flat + surtax) |
| New York | ~10.90% | 9 |
| Rhode Island | ~5.99% | 3 |
| New Jersey | ~10.75% | 7 |
| National average | ~4.60% | Varies |
Connecticut’s top rate of ~6.99% is above the national average but lower than neighboring New York and New Jersey. However, the recapture mechanism can make the effective marginal rate higher than ~6.99% for filers in the phase-out range.
Tips for Minimizing Connecticut Income Tax
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Understand the recapture tax. If your income is in the recapture range, your effective marginal rate is higher than ~6.99%. Planning income timing around these thresholds can yield savings.
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Maximize retirement contributions. Traditional 401(k) and IRA contributions reduce federal AGI, which directly lowers Connecticut AGI.
-
Claim the state EITC. At ~30.5% of the federal credit, Connecticut’s refundable EITC provides meaningful tax relief for qualifying low- and moderate-income filers.
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Check Social Security subtraction eligibility. If your income falls below Connecticut’s thresholds, some or all of your Social Security benefits may be subtracted from state taxable income.
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Contribute to a Connecticut 529 plan (CHET). While the deduction amount varies, contributions to CHET can reduce state taxable income.
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Review the property tax credit. Seniors and disabled homeowners and renters with modest incomes should apply for this credit annually.
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File electronically. Connecticut encourages e-filing and processes refunds faster for electronic returns.
Key Takeaways
- Connecticut has seven income tax brackets ranging from ~3.00% to ~6.99%.
- The recapture tax effectively raises marginal rates above ~6.99% for filers in certain income ranges.
- There are no local income taxes in Connecticut.
- The personal credit replaces traditional exemptions and phases out at higher income levels.
- Connecticut’s refundable EITC at ~30.5% of the federal credit is among the most generous state matches.
- Social Security benefits may be partially or fully subtracted depending on income levels.
Next Steps
- Federal Income Tax Guide 2026 — See how federal AGI drives your Connecticut return.
- State Income Tax Rates Comparison 2026 — Compare Connecticut to all 50 states.
- Tax Bracket Calculator — Estimate your combined federal and Connecticut tax.
- Self-Employment Tax Guide — Connecticut rules for freelancers and self-employed filers.
- Find a CPA Near You — Get professional help with Connecticut’s complex system.