Connecticut State Tax Rate Guide – If you live in Connecticut, work in the state, or own property here, understanding the Connecticut state tax rate guide is essential for accurate tax planning and compliance. Connecticut imposes a mix of progressive income taxes, a competitive statewide sales tax, high local property taxes, and other levies that rank among the highest in the nation. This comprehensive guide breaks down the latest 2026 rates, brackets, filing requirements, and key updates using official data from the Connecticut Department of Revenue Services (DRS) and trusted sources like the Tax Foundation. Whether you’re a resident filing your return or a business owner, this Connecticut state tax rate guide will help you navigate your obligations.
Overview of Connecticut State Taxes
Connecticut relies on a graduated personal income tax, a flat corporate rate with surtaxes for large businesses, a uniform 6.35% sales tax (with no local add-ons), and locally administered property taxes. The state does not impose local sales taxes, which keeps the combined rate predictable across towns. However, Connecticut consistently ranks as one of the higher-tax states overall due to its property tax burden and complex income tax structure that includes recapture provisions for high earners.
Taxes fund education, infrastructure, and public services, but residents and businesses should stay current on filing deadlines through the myconneCT portal.
Connecticut Personal Income Tax Rates
Connecticut’s personal income tax is one of the most complex in the U.S., with seven marginal brackets and phase-out rules that can cause high-income taxpayers to pay the top rate on nearly all income (a “tax benefit recapture” provision). Rates apply to Connecticut taxable income after allowable deductions and credits.
2026 Income Tax Brackets
Single Filers and Married Filing Separately:
| Tax Rate | Taxable Income Bracket |
|---|---|
| 2.00% | $0 – $10,000 |
| 4.50% | $10,001 – $50,000 |
| 5.50% | $50,001 – $100,000 |
| 6.00% | $100,001 – $200,000 |
| 6.50% | $200,001 – $250,000 |
| 6.90% | $250,001 – $500,000 |
| 6.99% | Over $500,000 |
Married Filing Jointly / Qualifying Surviving Spouse:
| Tax Rate | Taxable Income Bracket |
|---|---|
| 2.00% | $0 – $20,000 |
| 4.50% | $20,001 – $100,000 |
| 5.50% | $100,001 – $200,000 |
| 6.00% | $200,001 – $400,000 |
| 6.50% | $400,001 – $500,000 |
| 6.90% | $500,001 – $1,000,000 |
| 6.99% | Over $1,000,000 |
Head of Household brackets fall between single and joint (consult DRS tables for exact figures).
Key Notes for 2026:
- Personal tax credits (ranging 1–75%) are available based on adjusted gross income (AGI) and replace a traditional personal exemption in many cases.
- High-AGI phase-outs and recapture mean many upper-middle and high earners effectively pay closer to 6.99% on all income.
- Withholding follows updated 2026 tables from DRS; employers use Form CT-W4.
File Form CT-1040 by April 15, 2027, for 2026 taxes (or extended deadline).
Connecticut Sales Tax Rates
Connecticut maintains one of the simplest sales tax systems in the country: a flat statewide rate with no local city or county add-ons. The base rate is 6.35% on most retail sales of tangible personal property, digital goods, and taxable services.
Special Sales Tax Rates (2026)
- 7.35% — Meals and certain beverages
- 7.75% — Luxury items: motor vehicles over $50,000; jewelry over $5,000; clothing, footwear, handbags, luggage, umbrellas, wallets, or watches over $1,000
- 9.35% — Short-term rental or lease of passenger motor vehicles (30 days or less)
- 1% — Certain computer and data processing services for business use
- 2.99% — Vessels, boat motors, and related marine items
Many exemptions apply (e.g., groceries, prescription drugs, certain manufacturing equipment, and new exemptions for certain ambulances effective 2025). Sellers collect and remit via myconneCT; use tax applies to out-of-state purchases.
Connecticut Corporate Income Tax Rates
Businesses face a 7.5% flat corporate income tax rate on net income. However, a 10% surtax applies to companies with Connecticut gross proceeds of $100 million or more (or combined unitary filers), raising the effective rate to 8.25% for large entities. This surtax remains in effect through 2028.
Additional rules include add-back requirements for federal bonus depreciation and a phased-out capital base tax. File Form CT-1120 annually.
Connecticut Property Tax Rates
Property taxes are locally administered by Connecticut’s 169 towns and cities—no statewide rate exists. Rates are expressed in mills (dollars per $1,000 of assessed value, typically 70% of market value).
Effective property tax rates rank among the highest in the U.S. (approximately 1.54%–1.81% depending on the source and year), making Connecticut one of the top three states for property tax burden.
- Median annual property tax bills often exceed $6,000–$9,000 depending on the town.
- Mill rates vary widely (e.g., from low-20s in some rural areas to 30+ in urban/suburban towns for FY 2025–2026).
- Relief programs include the elderly/disabled circuit breaker credit (up to $1,000–$1,250) for qualifying low-to-moderate income seniors and disabled homeowners.
Check your town assessor’s office or the Office of Policy and Management (OPM) mill rate list for your specific rate.
Connecticut Estate and Gift Tax
Connecticut imposes its own estate tax (separate from federal). For decedents dying in 2026, the exemption amount rises to $15 million per person ($30 million for married couples with proper planning), aligning with the federal basic exclusion amount. The tax rate is a flat 12% on the amount exceeding the exemption.
- File Form CT-706/709 if the estate exceeds the threshold.
- Connecticut also has a gift tax that generally follows the same exemption and rate structure.
- Nonresident estates are taxed only on Connecticut real or tangible personal property.
Other Notable Connecticut Taxes
- Gas tax and motor vehicle fees apply but are not part of the core income/sales/property system.
- Retirement income (pensions, 401(k) distributions) is generally taxable; Social Security benefits are exempt.
- No state inheritance tax exists (only estate tax on the decedent’s estate).
Tax Credits and Deductions in Connecticut
Connecticut offers several credits to offset liability:
- Personal tax credits (1–75% based on AGI)
- Child tax credit proposals and existing family credits (check DRS for 2026 expansions)
- Property tax relief for seniors/disabled
- Business credits for manufacturing, R&D, and job creation
Deductions are limited compared to federal; many high earners benefit more from credits than itemized deductions.
Recent Changes in Connecticut Tax Rates (2025–2026)
- Estate/gift tax exemption increased to $15 million for 2026.
- Corporate surtax extended through 2028.
- Minor updates to sales tax exemptions (e.g., certain ambulances and aircraft).
- Ongoing legislative discussions about middle-class income tax relief and child credits, but core brackets remain stable for 2026.
How Connecticut Taxes Compare to Other States?
Connecticut’s top income tax rate (6.99%) is moderate nationally but feels high due to recapture. Sales tax (6.35%) is below the national average, but property taxes push the overall burden into the top tier. Businesses face higher effective corporate rates than many Sun Belt states. Residents in high-tax Northeast states often compare favorably on sales tax but less so on property.
Frequently Asked Questions About Connecticut State Taxes
What is the Connecticut state income tax rate for 2026?
It ranges from 2% to 6.99%, depending on your filing status and taxable income.
Does Connecticut have a state sales tax on groceries?
No—most unprepared food and groceries are exempt.
Are property taxes paid to the state or town?
To your local municipality; rates vary by town.
When are Connecticut state taxes due?
April 15 (or next business day) for most filers.
Do I need to file if I’m a nonresident working in Connecticut?
Yes, if you have Connecticut-source income above filing thresholds.
Final Tips for Connecticut Taxpayers
Always use the official myconneCT portal for forms, payments, and calculators. Tax laws can change, and individual situations vary—consult a licensed Connecticut tax professional or CPA for personalized advice. For the most current forms and withholding tables, visit the Connecticut DRS website.
This Connecticut state tax rate guide is based on 2026 data available as of April 2026 and is for informational purposes only. Stay informed and plan ahead to minimize your Connecticut tax liability legally and effectively.