How to Get a Business License in Connecticut (2026)

Fact-checked by the LegalGlass editorial team against primary sources · Published Aug 6, 2026 · Last updated Aug 6, 2026

Connecticut does not have a single, statewide general business license. Instead, businesses must register their legal entity with the Connecticut Secretary of the State (SOTS), obtain a federal Employer Identification Number (EIN) from the IRS, and secure specific licenses or permits based on their industry, profession, or local jurisdiction. Businesses selling taxable goods or services must also register for a Sales and Use Tax Permit with the Department of Revenue Services (DRS).

Quick Answer

General State License: None required
Entity Registration: Required for most businesses with CT SOTS
Sales Tax Permit: Required if selling taxable goods/services (CT DRS)
Professional Licenses: Required for many regulated professions (CT DCP)
Local Licenses: Varies by city/town
Federal EIN: Required for most businesses (IRS)

No General Statewide Business License in Connecticut

Unlike some states, Connecticut does not issue a single, overarching "general business license" that all businesses must obtain to operate. Instead, the state employs a targeted approach, requiring specific licenses and permits for certain types of businesses, professions, and activities. This means that while you won't apply for a universal Connecticut business license, your business will likely need to comply with several other state, federal, and local registration and licensing requirements.

The process typically involves establishing your business entity with the Secretary of the State, securing a federal Employer Identification Number (EIN), and then identifying any industry-specific or local permits relevant to your operations. For a general overview of business licensing, see business license requirements.

Connecticut Secretary of the State Business Registration

Before seeking any specific licenses, most businesses in Connecticut must first register their legal entity with the Connecticut Secretary of the State (SOTS). This step formally establishes your business as a legal entity within the state, such as a Limited Liability Company (LLC), corporation, or partnership. Sole proprietorships and general partnerships typically do not file formation documents with the SOTS, but may need to register a trade name (DBA) if operating under a name other than the owner's legal name.

The SOTS handles the filing of formation documents, such as Articles of Organization for an LLC or Articles of Incorporation for a corporation. These filings typically involve a fee, which varies by entity type. For example, filing Articles of Organization for a domestic LLC (Form CLLC-1) costs $120 (2026). Foreign entities (those formed outside Connecticut) must also register with the SOTS to transact business in the state.

The SOTS website provides online filing options and forms for various business structures. This registration is foundational and distinct from operational licenses.

Federal Employer Identification Number (EIN)

Most businesses in Connecticut will need a federal Employer Identification Number (EIN) from the Internal Revenue Service (IRS). An EIN is a nine-digit number used by the IRS to identify businesses for tax purposes. You will need an EIN if your business:

Has employees
Is structured as a corporation or partnership
Files excise, employment, alcohol, tobacco, or firearm taxes
Withholds taxes on income, other than wages, paid to a non-resident alien
Has a Keogh plan
Is involved with certain types of organizations (e.g., trusts, estates)

Even if not strictly required, many single-member LLCs and sole proprietorships obtain an EIN to separate business and personal finances, open a business bank account, or simplify tax filings. Applying for an EIN is free and can be done online through the IRS website.

Connecticut Sales and Use Tax Permit

If your business sells or leases tangible personal property, or provides taxable services in Connecticut, you must register for a Sales and Use Tax Permit with the Connecticut Department of Revenue Services (DRS). This permit allows you to collect sales tax from customers and remit it to the state. The application for a sales tax permit is typically part of the general business registration process with the DRS.

The DRS website provides detailed information on what goods and services are subject to sales tax, current tax rates, and filing requirements. Businesses must file sales tax returns periodically (e.g., monthly, quarterly, or annually) depending on their sales volume. Failure to register and collect sales tax when required can result in penalties and interest. For more information on sales tax, refer to our business tax guide.

Professional and Occupational Licenses

Connecticut regulates many professions and occupations to ensure public safety and consumer protection. If your business operates in a regulated field, you will need to obtain a specific professional or occupational license from the relevant state agency. The Connecticut Department of Consumer Protection (DCP) is a primary agency responsible for licensing a wide array of professions, including:

Accountants
Architects
Attorneys (regulated by the Judicial Branch)
Barbers and Hairdressers
Contractors (home improvement, new home construction)
Electricians
Engineers
Healthcare professionals (doctors, nurses, dentists, etc. – regulated by the Department of Public Health)
Insurance agents
Plumbers
Real estate brokers and agents
Social workers

Each professional license has its own set of requirements, which may include education, examinations, experience, and continuing education. Application fees and renewal schedules vary significantly. It is crucial to identify the specific licensing board or department governing your profession and comply with their regulations before offering services. The DCP website offers a comprehensive list of all license types they administer.

Local City and Town Business Licenses

In addition to state-level requirements, many cities and towns in Connecticut impose their own local business licensing and permitting requirements. These can vary widely by municipality and may include:

General local business licenses: Some towns may require all businesses operating within their jurisdiction to obtain a general local business license.
Zoning and land use permits: Businesses often need permits to ensure their location and operations comply with local zoning ordinances.
Health permits: Restaurants, food service establishments, and other businesses handling food typically require health permits from the local health department.
Building permits: If you plan to construct, renovate, or alter a commercial space, you will need building permits.
Fire permits: Certain businesses may require permits related to fire safety and occupancy.
Sign permits: Permits are often needed for business signage.

To determine the specific local requirements for your business, you should contact the city or town clerk's office, planning department, or local business development office in the municipality where your business will operate. Failing to obtain necessary local permits can result in fines or operational shutdowns.

Fees and Renewal Requirements

The costs associated with business licenses and registrations in Connecticut are highly variable. There is no single fee for a "Connecticut business license" because there is no such single license. Instead, you will encounter fees for:

Entity registration: For example, $120 for a domestic LLC with the SOTS.
Trade name registration: If applicable, with the town clerk.
Professional licenses: These can range from tens to hundreds of dollars for application and renewal, depending on the profession.
Local permits: Fees for zoning, health, building, and other local permits vary by municipality.

Most licenses and registrations require periodic renewal, typically annually or biennially. It is essential to keep track of renewal dates and associated fees to maintain compliance and avoid penalties. The relevant state agencies (SOTS, DRS, DCP) and local municipal offices will provide information on their specific fee schedules and renewal processes.

Steps to Business License Compliance in Connecticut

To ensure your business is properly licensed and registered in Connecticut, follow these general steps:

Form Your Business Entity: Register your LLC, corporation, or other legal structure with the Connecticut Secretary of the State.
Obtain an EIN: Apply for a free Employer Identification Number from the IRS.
Register with DRS: If selling taxable goods or services, register for a Sales and Use Tax Permit with the Department of Revenue Services.
Identify Professional Licenses: Determine if your profession or industry requires a specific license from the Department of Consumer Protection or another state agency.
Check Local Requirements: Contact your city or town clerk's office to inquire about any local business licenses, zoning permits, health permits, or other local regulations.
Maintain Compliance: Keep all registrations and licenses current by adhering to renewal schedules and paying any associated fees.

Utilizing resources like the Connecticut Business One Stop portal can help streamline the process by providing centralized access to information and forms from various state agencies.

Frequently Asked Questions

Does Connecticut require a general business license?

No, Connecticut does not have a single, statewide general business license that all businesses must obtain. Instead, licensing requirements are specific to certain professions, industries, or local jurisdictions.

How do I register my business in Connecticut?

Most businesses must register with the Connecticut Secretary of the State (SOTS) to establish their legal entity, such as an LLC or corporation. This is a separate step from obtaining specific licenses or permits.

Do I need a sales tax permit in Connecticut?

Yes, if your business sells or leases tangible personal property, or provides taxable services in Connecticut, you must register for a Sales and Use Tax Permit with the Department of Revenue Services (DRS).

Where can I find professional license requirements in Connecticut?

The Connecticut Department of Consumer Protection (DCP) licenses many professions and occupations. Their website provides a comprehensive list and details on how to apply for specific professional licenses.

Are there local business license requirements in Connecticut?

Yes, many cities and towns in Connecticut have their own local licensing and permitting requirements. Businesses should contact their specific municipal clerk or local government office to inquire about local regulations.

What is the cost of a Connecticut business license?

The cost varies significantly depending on the type of license or permit required. Entity registration fees with the SOTS range from $20 to $120. Sales tax permits are generally free, but professional licenses can have substantial application and renewal fees.

General Business License Guide (cluster hub)
How to Form an LLC in Connecticut
Connecticut Sales Tax Guide
How to Get an EIN
Connecticut Registered Agent Requirements
How to Get a Business License in New York (sibling)
How to Get a Business License in Massachusetts (sibling)

More Connecticut business guides

Annual Report Articles Of Organization Business Entity Search Certificate Of Authority Dba Filing Dissolve An Llc In Form An Llc In Llc Tax Filing Operating Agreement Registered Agent Sales Tax

Sources

Connecticut Secretary of the State - Business Registration Overview.
Connecticut Secretary of the State - Form CLLC-1, Certificate of Organization for Domestic Limited Liability Company.
Connecticut Department of Revenue Services - Sales and Use Tax Information.
Connecticut Department of Revenue Services - Business Registration Overview (DRS).
Connecticut Department of Consumer Protection - All License Types.
Internal Revenue Service - Get an Employer Identification Number (EIN).
Internal Revenue Service - Limited Liability Company (LLC) Tax Information.
Connecticut General Statutes - Chapter 613, Limited Liability Companies (for LLC formation and registered agent requirements).
Connecticut General Statutes - Chapter 219, Sales and Use Taxes.
Connecticut General Statutes - Chapter 400, Professional and Occupational Licensing, Generally.
Connecticut Business One Stop - Connecticut Business One Stop Portal (centralized resource for business information).
Connecticut Department of Public Health - Professional Licensing and Certification (for healthcare professions).
Connecticut Judicial Branch - Attorney Licensing Information.
Cornell Law School Legal Information Institute - Business License (general definition).
Cornell Law School Legal Information Institute - Employer Identification Number (EIN) (general definition).

LegalGlass provides general information for educational purposes and is not a law firm or a substitute for advice from a licensed attorney or tax professional. Laws, fees, and thresholds change; verify current requirements with the Connecticut Secretary of the State, Department of Revenue Services, and Department of Consumer Protection before acting.