Connecticut Income Tax Guide for 2025
Overview
Connecticut uses a progressive income tax system with rates ranging from 2% to 6.99%. Capital gains are taxed as ordinary income. The state offers personal exemptions of $15,000.
Income Tax Rates
Single Filers
| Income Range | Tax Rate |
|---|---|
| Up to $9,999 | 2% |
| $10,000 - $49,999 | 4.5% |
| $50,000 - $99,999 | 5.5% |
| $100,000 - $199,999 | 6% |
| $200,000 - $249,999 | 6.5% |
| $250,000 - $499,999 | 6.9% |
| $500,000+ | 6.99% |
Married Filing Jointly
| Income Range | Tax Rate |
|---|---|
| Up to $19,999 | 2% |
| $20,000 - $99,999 | 4.5% |
| $100,000 - $199,999 | 5.5% |
| $200,000 - $399,999 | 6% |
| $400,000 - $499,999 | 6.5% |
| $500,000 - $999,999 | 6.9% |
| $1,000,000+ | 6.99% |
Capital Gains Tax
Capital gains are taxed at the same rates as ordinary income.
Deductions & Exemptions
| Type | Amount |
|---|---|
| Personal Exemption (Single) | $15,000 |
| Personal Exemption (Married) | $24,000 |
Additional Information
- Rates and brackets are set in statute and are not indexed; the 2% and 4.5% bottom rates took effect in 2024 and are unchanged for 2025
- Connecticut has no standard deduction; the personal exemption shown is the 2025 maximum and phases out by $1,000 for each $1,000 of Connecticut AGI above $30,000 single (gone at $44,000) and above $48,000 married filing jointly (gone at $71,000)
- High earners also face a 2% tax-rate phase-out add-back and a tax recapture that claws back the benefit of the lower brackets
Charts
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Sources
The 2025 figures for Connecticut on this page were compiled from the following official government publications:
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