Connecticut has progressive income tax rates from 2% to 6.99% — among the higher rates in the Northeast.
Connecticut Income Tax Rates for 2026
Single Filers
| 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% |
| Over $500,000 | 6.99% |
Married Filing Jointly
| Taxable Income | Tax Rate |
|---|---|
| $0 - $20,000 | 2.0% |
| $20,000 - $100,000 | 4.5% |
| $100,000 - $200,000 | 5.5% |
| $200,000 - $400,000 | 6.0% |
| $400,000 - $500,000 | 6.5% |
| $500,000 - $1,000,000 | 6.9% |
| Over $1,000,000 | 6.99% |
Connecticut Tax Calculator Examples
Example 1: $75,000 Single Filer
| Component | Calculation |
|---|---|
| Taxable income | $75,000 |
| Tax on first $10,000 | $200 |
| Tax on $10,000 - $50,000 | $1,800 |
| Tax on $50,000 - $75,000 | $1,375 |
| Total CT state tax | $3,375 |
| Effective rate | 4.5% |
Example 2: $150,000 Married Filing Jointly
| Component | Calculation |
|---|---|
| Taxable income | $150,000 |
| Tax on first $20,000 | $400 |
| Tax on $20,000 - $100,000 | $3,600 |
| Tax on $100,000 - $150,000 | $2,750 |
| Total CT state tax | $6,750 |
| Effective rate | 4.5% |
Connecticut Personal Exemptions
Connecticut doesn’t have a standard deduction like the federal system. Instead, it offers personal exemptions that phase out at higher incomes:
| Filing Status | Exemption | Phase-out Begins |
|---|---|---|
| Single | $15,000 | $30,000 AGI |
| MFJ | $24,000 | $48,000 AGI |
| Head of Household | $19,000 | $38,000 AGI |
The exemption is completely phased out at higher income levels.
Connecticut Tax Credits
Property Tax Credit
Connecticut offers a property tax credit:
- Maximum credit: $300 (married) / $200 (single)
- Income limits apply
- Must be CT property owner
Earned Income Tax Credit
Connecticut provides a refundable EITC:
- 30.5% of the federal EITC
- Refundable credit
Child Tax Rebate
Periodic rebates for families:
- Check CT DRS for current programs
What Income is Taxed in Connecticut?
Taxed:
- Wages and salaries
- Self-employment income
- Interest and dividends
- Capital gains (taxed as ordinary income)
- 401(k) and traditional IRA distributions
- Most pension income
- Rental income
Not taxed or exempt:
- Social Security — Exempt if AGI below $75,000 (single) / $100,000 (married)
- Teacher Retirement System benefits
- Some military retirement pay
- Connecticut municipal bond interest
Social Security Taxation
| Filing Status | Full Exemption Below |
|---|---|
| Single | $75,000 AGI |
| Married Filing Jointly | $100,000 AGI |
Above these thresholds, a portion becomes taxable.
Connecticut vs. Neighboring States
| State | Top Income Tax Rate |
|---|---|
| Connecticut | 6.99% |
| Massachusetts | 5.0% (flat) + 4% surtax |
| New York | 10.9% |
| Rhode Island | 5.99% |
| New Jersey | 10.75% |
Local Income Taxes
Connecticut does not have local income taxes. Only the state tax applies.
Filing Connecticut State Taxes
| Filing Requirement | Details |
|---|---|
| Form | CT-1040 |
| Due date | April 15 (with federal) |
| E-file | Yes, through CT DRS |
| Extension | 6-month with federal |
Connecticut Property Tax
Connecticut has some of the highest property taxes in the nation:
- Average effective rate: ~2.1%
- No circuit breaker for seniors
- Major cost for homeowners
Connecticut Sales Tax
- State rate: 6.35%
- Groceries exempt
- Clothing under $100 exempt
Tips to Reduce Connecticut Taxes
- Claim property tax credit — Up to $300 if eligible
- Max retirement contributions — 401(k), IRA reduce taxable income
- CT EITC — 30.5% of federal credit
- Social Security planning — Keep AGI below exemption thresholds
- 529 contributions — CT deduction up to $5,000 (single) / $10,000 (married)
- HSA contributions — Triple tax advantage
Connecticut Tax Authority
Connecticut Department of Revenue Services (DRS)
- Website: portal.ct.gov/DRS
- Phone: 860-297-5962
- For refunds, returns, and questions
Bottom Line
Connecticut has progressive income tax rates from 2% to 6.99%, with the top rate for incomes over $500,000 (single) or $1,000,000 (married). The state offers Social Security exemptions for lower incomes and a property tax credit of up to $300. Combined with some of the nation’s highest property taxes, Connecticut’s overall tax burden is above average.