Connecticut Business Registration: Starting and Licensing a Business

Connecticut's Secretary of the State processes tens of thousands of new business filings each year, and the pathway from idea to legally operating entity involves at least three distinct state agencies before a business ever serves its first customer. This page covers the mechanics of business registration and licensing in Connecticut — the entity types available, the filing steps required, the licensing layers that vary by industry, and the boundaries of what state registration does and does not accomplish.

Definition and scope

Business registration in Connecticut refers to the formal process of establishing a legal business entity with the state and, separately, obtaining the operating licenses and permits required to conduct specific activities. These are distinct acts. Registering a limited liability company with the Secretary of the State creates the legal shell. Obtaining a sales tax permit from the Connecticut Department of Revenue Services fills that shell with the authority to collect and remit tax. Getting a professional license from the relevant occupational board determines whether the people inside that shell can legally do the work.

The Connecticut Secretary of the State's Business Services Division manages entity formation and registration. The Department of Revenue Services handles tax registration. The Department of Consumer Protection administers licenses for a wide range of trades and professions. Depending on the industry, additional oversight may come from the Connecticut Department of Banking, the Connecticut Department of Insurance, or the Connecticut Department of Public Health.

Scope and limitations: This page addresses Connecticut state-level requirements only. Federal employer identification numbers (EINs) from the IRS, federal licenses for regulated industries such as alcohol or firearms, and local zoning permits issued by Connecticut municipalities fall outside state registration but remain legally required. Businesses operating across state lines must also consider foreign qualification requirements in other states — a process entirely separate from Connecticut domestic registration.

How it works

The registration process follows a logical sequence, even if the total number of steps surprises first-time filers.

  1. Choose an entity type. Connecticut recognizes sole proprietorships, general partnerships, limited liability companies (LLCs), corporations (S and C), limited partnerships (LPs), and limited liability partnerships (LLPs). Each carries different liability exposure, tax treatment, and formation cost. LLCs are the most common formation type filed with the Secretary of the State's Business Services Division.

  2. Reserve or confirm the business name. Connecticut requires that LLC and corporation names be distinguishable from existing registered entities. Name reservations are available for 120 days through the Secretary of the State's online portal.

  3. File formation documents. LLCs file a Certificate of Organization. Corporations file a Certificate of Incorporation. The standard LLC filing fee is $120 (Connecticut Secretary of the State, Business Services). Foreign entities — those formed in another state but operating in Connecticut — file a Foreign Registration Statement for $120.

  4. Register with the Department of Revenue Services. Any business selling taxable goods or services, employing workers, or subject to business taxes must register with the Connecticut Department of Revenue Services. Connecticut's standard sales and use tax rate is 6.35% (Connecticut DRS, Sales Tax Information).

  5. Obtain industry-specific licenses and permits. The Department of Consumer Protection maintains a searchable license lookup covering more than 200 license types, from home improvement contractors to liquor retailers to massage therapists.

  6. File an annual report. Connecticut LLCs and corporations must file an annual report with the Secretary of the State. The fee is $80 for LLCs and $150 for stock corporations (Connecticut Secretary of the State).

Common scenarios

The registration path varies meaningfully depending on what a business does and where it operates within Connecticut.

A sole proprietor freelancer operating under their own legal name in Connecticut technically needs no state entity registration. However, they do need to register with the Department of Revenue Services if providing taxable services, and must obtain any relevant professional licenses. Operating under a trade name requires filing a Trade Name Certificate with the town clerk in the municipality where the principal place of business is located — a local requirement, not a state one.

An LLC opening a restaurant in Hartford County would file formation documents with the Secretary of the State, register with DRS for sales tax and employer withholding, apply to the Department of Consumer Protection for a food service license, and separately apply to the local municipality for zoning and building permits. The state-level steps alone involve at least 3 separate agencies before opening day.

A contractor faces an additional licensing layer. Home improvement contractors register with the Department of Consumer Protection under Connecticut General Statutes §20-417a, which requires a registration fee and proof of insurance. New construction work may require a contractor's license at the municipal level. Connecticut Government Authority covers the structural relationships between state licensing boards and local permit-issuing bodies — a useful reference for contractors navigating the overlap between state registration requirements and municipal enforcement.

A corporation registering from another state — say, a Delaware-incorporated company opening a Connecticut office — must file a Foreign Registration Statement rather than formation documents. The legal entity already exists; Connecticut's filing simply establishes the company's authority to transact business within the state.

Decision boundaries

The choice of entity type is the most consequential early decision, and it is not easily reversed without cost and paperwork. The contrast between LLCs and S corporations illustrates the tradeoff clearly: LLCs offer flexible management structure and pass-through taxation by default, but owners who pay themselves may owe self-employment tax on the full profit. S corporations allow owner-employees to take a salary (subject to payroll tax) and receive additional distributions (not subject to self-employment tax), but S corporations carry strict eligibility rules — no more than 100 shareholders, one class of stock, and no nonresident alien shareholders (IRS, S Corporation Requirements).

Connecticut does not impose a separate state-level franchise tax on LLCs, which distinguishes it from states like California, where the minimum franchise tax is $800 per year regardless of revenue. Connecticut does require the annual report and associated fee, but the baseline cost of maintaining an LLC in good standing remains relatively modest.

Businesses in regulated industries — healthcare, financial services, insurance, real estate — face licensing requirements that exist entirely apart from entity registration and are not satisfied by filing with the Secretary of the State. A registered LLC with no occupational license is still an unlicensed practitioner if the principal activity requires one.

For a broader orientation to Connecticut's regulatory landscape and the agencies that govern business activity at the state level, the Connecticut State Authority home page provides a structured entry point to agency-specific resources and legal frameworks.

References

Read Next

Connecticut Department of Revenue Services: Taxation and Compliance The agency operates under the authority of Connecticut General Statutes Title 12 , which governs taxation across the state. Connecticut Department of Banking: Regulation and Consumer Protection Established under Connecticut General Statutes Title 36a , the department holds authority to examine institutions, investigate... Connecticut Insurance Department: Regulation and Consumer Services It operates under Connecticut General Statutes Title 38a , which defines its authority over market conduct, solvency...