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Connecticut . Business License

Connecticut business license requirements explained.

Most Connecticut businesses need more than just a Secretary of State formation. State-level licenses, city/county licenses, and industry-specific permits all stack. This guide explains the three layers, where each applies, renewal cycles, and the licenses founders most often forget.

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The three layers of Connecticut business licensing

Layer 1: State license

Connecticut state-level business license

Some states require a general business license at the state level (e.g., NV State Business License). Others rely on industry-specific state licenses only.

Layer 2: City/County

Local business license

Most Connecticut cities and counties require a local business license. Fees + renewal cycles vary by municipality. Where you operate is what counts . not where you formed.

Layer 3: Industry

Professional and industry permits

Restaurants, contractors, professional services, retail (sales tax permit), childcare, and many others require industry-specific permits in Connecticut.

The licenses Connecticut founders most commonly forget

  • Sales tax permit / seller's permit. Required to collect Connecticut sales tax.
  • Local home-occupation permit. Running a business from home in Connecticut often requires zoning approval.
  • Workers comp insurance registration if hiring employees.
  • Professional license for regulated trades.
  • DBA / Fictitious Name if operating under a brand different from your legal entity.
FAQ

Frequently asked questions

Do I need a business license in Connecticut?
Almost always . at least at the city or county level. Some states also require a general state license.
How much does a Connecticut business license cost?
Varies. State licenses can be $50-$500. City licenses typically $25-$200. Industry-specific permits vary widely.
Where do I apply for a Connecticut business license?
Depends on the layer. State: typically through the {s["agency"]} or Department of Revenue. City/County: local clerk. File.Business identifies all applicable licenses.
How often do Connecticut business licenses renew?
Most annually. Some biennial. Some, like contractor licenses, every 1-3 years.
Is the Connecticut sales tax permit the same as a business license?
No. Sales tax permit is issued by the {s["name"]} Department of Revenue and required if you collect sales tax.
Do I need a business license if I work from home in Connecticut?
Often yes. Many {s["name"]} cities require a home-occupation permit in addition to the standard business license.
Does File.Business identify which licenses I need?
Yes. We screen federal, state, city, and industry permits based on your entity, location, and business activity.

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Disclosure. File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with the CT Secretary of the State or any Secretary of State office. You may file directly with the CT Secretary of the State. Information on this page is for general guidance only and is not legal, tax, or accounting advice. Fees and deadlines verified against the CT Secretary of the State as of June 2026 and may change. For entity-specific guidance, consult a licensed Connecticut attorney or CPA.

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File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with any Secretary of State office. You may file directly with the appropriate state agency. SOC 2 Type II audited. 220,000+ businesses formed since 2017.