Starting a Business in Connecticut: Licenses, Permits & Requirements (2026)

Last updated: February 25, 2026

Connecticut is a high-income, high-cost New England state with a well-educated workforce and proximity to both New York City and Boston – making it attractive for businesses serving those metro markets. LLC formation costs $120 (Certificate of Organization) with a $80 annual report each year. Connecticut’s income tax ranges from 2% to 6.99% across seven brackets, and the sales tax is a flat 6.35% with no local additions – one of the simplest sales tax structures in the Northeast.

That said, Connecticut has some of the highest business costs in the nation: top income tax rates approach 7%, workers’ compensation is mandatory for even one employee, and payroll taxes are substantial. On the positive side, Connecticut has no local sales taxes (just the flat 6.35%), and many professional service businesses find the state’s high median household income means customers are willing to pay premium rates. This guide walks you through every step using official Connecticut government sources.

How to Start a Business in Connecticut (Step by Step)

Step 1: Choose Your Business Structure

Your business structure determines your liability exposure, tax treatment, and ongoing compliance requirements. The most common options in Connecticut:

• Sole Proprietorship – No state filing required (just a DBA/trade name filed with your town clerk if using a business name). You are personally liable for all business debts. Simplest to start.
• LLC (Limited Liability Company) – Most popular for small businesses. Protects personal assets, flexible tax treatment. Costs $120 to form, $80/year to maintain.
• S-Corporation – Can reduce self-employment taxes for profitable businesses. Requires election with the IRS after forming a CT corporation. Note Connecticut imposes a Pass-Through Entity Tax at 6.99%.
• C-Corporation – Subject to Connecticut’s corporate income tax (7.5% base rate). Better for businesses seeking outside investment or planning to issue shares.
• Partnership – For businesses with two or more owners. Options include general partnership (GP), limited partnership (LP), or limited liability partnership (LLP).

For most Connecticut small businesses, an LLC is the right choice. The $120 formation cost is moderate, the $80/year annual report keeps compliance simple, and the LLC protects your personal assets from business liabilities.

Step 2: Register Your Business with the State

LLC Formation via the Secretary of the State

Connecticut business entities are registered through the Secretary of the State, Commercial Recording Division. Online filings are processed at business.ct.gov.

Item	Cost
Certificate of Organization (Domestic LLC)	$120
Annual Report (due each year)	$80/year
Foreign LLC Registration	$120
Trade Name / DBA (town clerk)	~$10-$20 (varies by town)

How to file online:

1. Go to business.ct.gov and create an account
2. Search for your desired business name to confirm availability – it must include “Limited Liability Company,” “L.L.C.,” or “LLC”
3. File your Certificate of Organization ($120) – designate a registered agent with a physical Connecticut street address
4. Online filings are typically processed within 1-3 business days
5. You may opt for expedited processing (same-day or 24-hour) for an additional fee

Annual Report

Connecticut LLCs must file an Annual Report every year to maintain good standing. The report costs $80 and is due between January 1 and March 31 each year (not the anniversary month – all CT LLCs have the same annual window). File online at business.ct.gov. Failure to file results in administrative dissolution.

Operating Agreement

Connecticut law does not require an LLC operating agreement, but it is strongly recommended. It defines member rights, profit distribution, management structure, and dissolution procedures. Keep it with your business records – it does not need to be filed with the state.

Trade Name / DBA

If your business operates under a name different from its registered legal name, you must file a trade name certificate with the town clerk in the town where your business is primarily conducted. As of January 1, 2025, trade name certificates expire five years after filing. The fee is approximately $10-$20 depending on the municipality.

Federal EIN

Apply for a free EIN (Employer Identification Number) from the IRS at IRS.gov. You receive it immediately online. You need an EIN to open a business bank account, hire employees, and file most tax forms.

Step 3: Get Required Licenses & Permits

No Statewide General Business License

Connecticut does not have a single statewide general business license. However, many municipalities require a local business license or permit to operate within their jurisdiction. Contact your city or town clerk to determine local requirements. Major cities:

• Bridgeport – Business licenses through the City Clerk’s Office
• New Haven – Business licenses through the City Clerk
• Hartford – Business licenses/permits through the Permits Office
• Stamford – Business licenses through the City Clerk

Industry-Specific Professional Licenses

Connecticut heavily regulates professional trades and services. The Department of Consumer Protection (DCP) handles contractor licensing (HVAC, electrical, plumbing, home improvement). The Department of Public Health (DPH) oversees cosmetology licensing, food service permits, and certain health-related businesses. The Office of Early Childhood (OEC) licenses child care providers. See the industry guides below for details.

Home Improvement Contractor Registration

If your business performs home improvements on residential property, you must register as a Home Improvement Contractor (HIC) with the Connecticut Department of Consumer Protection. The registration fee is $220 and must be renewed every two years. This applies to cleaning services that include repairs, HVAC, landscaping with hardscaping, and similar work on residential property.

Step 4: Register for State Taxes

Connecticut Income Tax

Connecticut has a graduated individual income tax with seven brackets for tax year 2025 (filed in 2026):

Taxable Income (Single Filer)	Rate
$0 – $10,000	2.0%
$10,001 – $50,000	4.5%
$50,001 – $100,000	5.5%
$100,001 – $200,000	6.0%
$200,001 – $250,000	6.5%
$250,001 – $500,000	6.9%
Over $500,000	6.99%

For married filing jointly, each bracket threshold roughly doubles. LLCs taxed as pass-through entities pay individual income tax rates on business income. The corporate income tax rate is 7.5% (with an effective rate of up to 8.25% for large businesses due to a surtax). Pass-through entities (partnerships, S-corps, LLCs) may also be subject to the Pass-Through Entity Tax (PET) at 6.99%, paid by the entity.

Connecticut Sales Tax

Register for a Sales Tax Permit through the Connecticut Department of Revenue Services (DRS) or via myconneCT online.

• State sales tax rate: 6.35% (uniform statewide – no local additions)
• No local sales taxes: Connecticut’s 6.35% is the only rate you collect, anywhere in the state
• Services: Connecticut only taxes specifically “enumerated” services – many common services (routine janitorial, salon services on labor) are NOT taxable; check DRS guidance for your specific service type
• Prepared food: Taxable at 6.35% (hot food, restaurant meals, food ready to eat)
• Sales tax permit: $100 fee to register (valid 2 years, auto-renewed while account is active); register at myconneCT via the REG-1 application
• Filing: Monthly, quarterly, or annual depending on your tax liability

Employer Taxes (If Hiring Employees)

Register for employer tax accounts through myconneCT.

• Unemployment Insurance (UI) Tax: New employers start at 1.9% on the first $27,000 of each employee’s wages per year (2026 rates). The taxable wage base increased from $26,100 in 2025.
• Withholding Tax: Register to withhold state income taxes from employee paychecks.
• Paid Leave CT: Connecticut’s paid family and medical leave program – 0.5% of employee wages (employee-paid, employer remits to state)

Report new hires to the Connecticut New Hire Reporting Center within 20 days of the hire date.

Step 5: Get Business Insurance

Workers’ Compensation Insurance

Connecticut requires workers’ compensation insurance for any employer with even one employee. There is no minimum employee threshold – coverage is mandatory from the moment you hire your first worker.

Status	Requirement
1 or more employees	Workers’ comp is mandatory
Sole proprietors / LLC members (no employees)	Not required (may elect coverage voluntarily)
Domestic workers (20+ hours/week in home)	Required

Coverage must be obtained from a qualified commercial carrier – Connecticut uses the private insurance market (no monopolistic state fund). The Workers’ Compensation Commission (WCC) oversees compliance. Penalties for non-compliance include fines, stop-work orders, and personal liability for any work-related injuries.

General Liability Insurance

While not always legally mandated, general liability insurance is essential for Connecticut businesses. Many clients, contracts, and licensing boards (including the Home Improvement Contractor registration) require proof of liability coverage. Industry standard: $1 million per occurrence / $2 million aggregate.

Connecticut Business Guides by Industry

Every industry has different licensing, permit, and insurance requirements in Connecticut. Choose your business type for a detailed breakdown:

• How to Start a Cleaning Service in Connecticut – Insurance, bonding, tax treatment, and municipality requirements
• How to Start a Food Truck in Connecticut – DPH itinerant vendor permit, reciprocal licensing, local health permits, and commissary rules
• How to Start a Daycare in Connecticut – OEC licensing, background checks, staff ratios, training requirements, and facility standards
• How to Start an HVAC Business in Connecticut – DCP contractor licensing, journeyperson requirements, S-1/D-1 licenses, exams, and bonding
• How to Start a Hair Salon in Connecticut – DPH hairdresser license, 1,500-hour training, exam fees, shop license, and costs
• How to Start a Landscaping Business in Connecticut – DEEP pesticide certification, commercial applicator license, and environmental compliance
• How to Start a Private Investigation Business in Connecticut – DESPP licensing, 5-year experience requirement, bonding, insurance, and recording laws

Connecticut Business Resources & Official Links

Resource	What It’s For
Connecticut Secretary of the State – Business Services	LLC/Corp formation, entity search, annual reports
Connecticut Department of Revenue Services (DRS)	Income tax, sales tax, withholding, employer registration
myconneCT	Online portal for tax registration, filing, and payments
Connecticut Department of Labor (DOL)	Unemployment insurance registration and tax rates
Connecticut Workers’ Compensation Commission (WCC)	Workers’ comp requirements, compliance, employer resources
Connecticut Department of Consumer Protection (DCP)	HVAC licensing, HIC registration, professional trades
Connecticut Department of Public Health (DPH)	Cosmetology licensing, food service permits, health-related businesses
Connecticut Office of Early Childhood (OEC)	Child care licensing, regulations, and compliance
CT DEEP – Pesticide Management Program	Commercial pesticide applicator certification for landscapers
IRS EIN Application	Free federal tax ID number

Frequently Asked Questions

How much does it cost to start an LLC in Connecticut?

Forming an LLC in Connecticut costs $120 (Certificate of Organization filed with the Secretary of the State at business.ct.gov). After formation, you pay an $80 annual report each year to keep your LLC in good standing. The annual report is due between January 1 and March 31 each year (same window for all CT LLCs). Total first-year cost: $200 ($120 formation + $80 annual report); $80/year ongoing.

What is Connecticut’s sales tax rate?

Connecticut’s sales tax rate is a flat 6.35% statewide. Unlike most states, Connecticut has no local sales taxes – the rate is the same everywhere in the state. Connecticut only taxes specifically enumerated services; many service businesses (routine cleaning, hair salon labor, etc.) are not subject to sales tax. Prepared food is taxable at 6.35%.

Does Connecticut have a workers’ compensation requirement?

Yes – Connecticut requires workers’ compensation insurance for any employer with even one employee. There is no minimum threshold. Coverage must be obtained from a qualified commercial carrier (private insurance market). Sole proprietors and LLC members with no employees are not required to carry coverage but may elect to do so voluntarily.

What is the income tax rate in Connecticut?

Connecticut has a progressive income tax with seven brackets ranging from 2% to 6.99%. The 2% rate applies on the first $10,000 of income for single filers. The top rate of 6.99% applies to income over $500,000 for single filers (over $1 million for joint filers). LLCs taxed as pass-throughs pay individual rates on business income. Pass-through entities may also be subject to Connecticut’s Pass-Through Entity Tax (PET) at 6.99%, paid at the entity level.

Do I need a business license in Connecticut?

Connecticut does not have a statewide general business license. However, many municipalities require local business permits or licenses – check with your city or town clerk. Additionally, many industries require state-level professional licenses through the Department of Consumer Protection (contractors, HVAC), Department of Public Health (cosmetology, food service), or other agencies.

Does Connecticut have a DBA / trade name requirement?

Yes. If your business operates under a name other than its legal name, you must file a trade name certificate with the town clerk where your business is primarily located. The fee is typically $10-$20 (varies by town). As of January 1, 2025, trade name certificates expire after five years and must be renewed.