Connecticut Income Tax for Married Filing Separately (2026)
Filing as a Married Filing Separately in Connecticut? Heres everything you need to know about the state income tax: brackets, standard deduction, and worked examples for common income levels.
Connecticut Tax Brackets (2026)
For Married Filing Separately in Connecticut, the tax brackets for 2026 are:
| Taxable Income | Tax Rate |
|---|---|
| $0 - $10,000 | 2.0% |
| $10,000 - $50,000 | 4.5% |
| $50,000 - $100,000 | 5.5% |
| $100,000 - $200,000 | 6.0% |
| $200,000 - $250,000 | 6.5% |
| $250,000 - $500,000 | 6.9% |
| $500,000 - $1,000,000 | 6.99% |
The standard deduction for Married Filing Separately in Connecticut is $14,600. You can take this deduction or itemize, whichever results in a lower tax bill.
$75,000 Income Example
Lets say youre a Married Filing Separately in Connecticut earning $75,000/year. After the $14,600 standard deduction, your taxable income is $60,400. Your Connecticut state tax is approximately:
Your effective state tax rate is 3.4%. This is on top of federal income tax (and local taxes if applicable).
More Examples for Married Filing Separately in Connecticut
| Gross Income | Taxable Income | State Tax | Effective Rate |
|---|---|---|---|
| $50,000 | $35,400 | $1,343 | 2.7% |
| $75,000 | $60,400 | $2,572 | 3.4% |
| $100,000 | $85,400 | $3,947 | 3.9% |
| $150,000 | $135,400 | $6,874 | 4.6% |
| $200,000 | $185,400 | $9,874 | 4.9% |
Connecticut-Specific Deductions and Credits
Beyond the standard deduction, Connecticut offers several tax deductions and credits that can reduce your tax bill:
- Retirement income exclusion: Some states exclude retirement income for seniors
- Property tax credit: Available in some states for homeowners and renters
- Earned Income Tax Credit (EITC): Some states have their own EITC in addition to the federal one
- Child and dependent care credit: Available in many states
- Education credits: 529 plan contributions or tuition deductions may be available
Use the Connecticut income tax calculator to model your specific situation, including deductions and credits.
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Filing Connecticut state taxes depends on your residency status:
- Connecticut residents: File Form ST-CT-1 with your state Department of Revenue. Due April 15 (same as federal).
- Part-year residents: File Form ST-CT-1-PR, reporting only income earned while a resident
- Non-residents: File Form ST-CT-1-NR if you earned income in Connecticut
Frequently Asked Questions
What is the Connecticut tax bracket for Married Filing Separately?
The Connecticut tax brackets for Married Filing Separately range from 2.0% to 6.99%. The standard deduction is $14,600.
How much Connecticut tax do I owe on a $75K income as a Married Filing Separately?
On a $75,000 income as a Married Filing Separately in Connecticut, you owe approximately $2,572 in state income tax. Your effective state tax rate is 3.4%.
What is the standard deduction for Married Filing Separately in Connecticut?
The standard deduction for Married Filing Separately in Connecticut is $14,600. You can take this or itemize, whichever is higher.