Connecticut imposes a graduated individual income tax, a single statewide sales tax, and several additional taxes that affect residents, homeowners, and businesses.
Understanding these taxes can help individuals plan effectively and remain compliant with state filing requirements.
Individual Income Tax
Connecticut uses a progressive income tax system, meaning tax rates increase as taxable income rises. The state has seven income tax brackets, and the applicable rates depend on your filing status.
Connecticut Individual Income Tax Rates
| Tax Rate | Single Filers | Married Filing Jointly |
|---|---|---|
| 2.00% | $0 – $10,000 | $0 – $16,000 |
| 4.50% | $10,001 – $50,000 | $16,001 – $80,000 |
| 5.50% | $50,001 – $100,000 | $80,001 – $160,000 |
| 6.00% | $100,001 – $200,000 | $160,001 – $320,000 |
| 6.50% | $200,001 – $250,000 | $320,001 – $400,000 |
| 6.90% | $250,001 – $500,000 | $400,001 – $800,000 |
| 6.99% | Over $500,000 | Over $800,000 |
Key Point:
Only the portion of income that falls within each bracket is taxed at that bracket’s rate—not your entire income.
Sales and Use Tax
Connecticut has a single statewide sales tax rate of 6.35%, with no local sales taxes, which simplifies compliance compared to many other states.
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Special Sales Tax Rates
Certain goods and services are subject to higher rates:
7.75%
- Motor vehicles priced over $50,000
- Jewelry purchases over $5,000
7.35%
- Meals, restaurant food, and certain beverages
- Use tax applies to taxable items purchased out of state but used in Connecticut when sales tax was not paid at purchase.
Corporate Income Tax
- Top Corporate Income Tax Rate: 8.25%
- Applies to corporations conducting business in Connecticut
- Includes unitary reporting requirements for certain multistate corporations
Property Tax
- Connecticut has one of the highest effective property tax rates in the nation
- Average effective rate: approximately 1.78% of owner-occupied housing value
- Rates vary significantly by municipality and are set at the local level
Estate Tax
Connecticut is one of the few states with a standalone estate tax.
- Estate Tax Exemption: $13.99 million
- The exemption amount mirrors the federal estate tax exemption
- Estates exceeding this threshold may owe both state and federal estate taxes
Filing and Payment Recommendations
Recommended: Electronic Filing
Connecticut encourages taxpayers to file electronically through the Department of Revenue Services (DRS).
Benefits of electronic filing include:
- Faster refunds
- Reduced errors through automatic calculations
- Immediate confirmation of receipt
- Secure payment options (direct debit or credit card)
- Easy access to prior-year returns and payment history
Most commercial tax software supports Connecticut returns, and many taxpayers qualify for free electronic filing options.
Summary
Connecticut’s tax structure combines a progressive income tax, a uniform statewide sales tax, and relatively high property taxes, with additional considerations for estates and businesses.
Taxpayers can simplify compliance and reduce processing delays by choosing electronic filing, which is the most efficient and secure way to submit Connecticut tax returns.
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