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Promote:Connecticut

Invest in Connecticut

A short guide for companies expanding into Connecticut: the economy at a glance, the rules and steps to set up, and who can help, each with its source.

1. Connecticut at a glance

Currency and inflation: see the United States at a glance

2. Before you set up

The body that handles foreign investment, any one-stop route, Connecticut’s limits on foreign ownership and the zones, as the guide found them.

Investment rules across the United States: see Invest in the United States

3. Steps to set up

The main steps, in order, each with the body responsible and its official page.

Setting up in Connecticut

  1. Register the company with the Secretary of the State through Business.CT.gov, using your business name, street address, email, NAICS code and a point of contact.Connecticut Secretary of the StateOfficial page⁠ (opens in a new tab)

    Source: Business.CT.gov, register your business⁠ (opens in a new tab) · as of November 3, 2026

  2. Register for state taxes in myconneCT, such as the Corporation Business Tax, withholding and sales and use tax, as your activities require.Connecticut Department of Revenue ServicesUS$100 sales and use tax permit feeOfficial page⁠ (opens in a new tab)

    Source: Department of Revenue Services, sales and use tax⁠ (opens in a new tab) · as of November 3, 2026

  3. Apply for an Employer Account Number and register for unemployment insurance tax in ReEmployCT if you will have employees.Connecticut Department of LaborOfficial page⁠ (opens in a new tab)

    Source: Department of Labor, unemployment insurance tax⁠ (opens in a new tab) · as of November 3, 2026

  4. Check the licenses and permits your business type needs on eLicense, which covers general businesses, health care and insurance.Connecticut Department of Consumer Protection; Connecticut Insurance DepartmentOfficial page⁠ (opens in a new tab)

    Source: Business.CT.gov, business licenses and permits⁠ (opens in a new tab) · as of November 3, 2026

Show 2 more set-up steps
  1. Report each new hire to the Department of Labor within 20 days of hiring.Connecticut Department of LaborWithin 20 days of hiringOfficial page⁠ (opens in a new tab)

    Source: Business.CT.gov, employment services page⁠ (opens in a new tab) · as of November 3, 2026

  2. Contact AdvanceCT about sites, incentives and introductions for your project.AdvanceCTOfficial page⁠ (opens in a new tab)

    Source: AdvanceCT, foreign investment in Connecticut⁠ (opens in a new tab) · as of November 3, 2026

Steps that apply across the United States: see Invest in the United States

4. Organizations that help investors

Start with AdvanceCT. Each card links to the organization’s own site.

Each card says what it can help with:Get adviceFind financeMeet requirementsResearch markets

Investment and business setup

Show 1 more organization

Customs and tax

Show 1 more organization

Chambers and industry associations

5. Worth knowing

Across the United States: see Worth knowing in Invest in the United States

6. How Promote:Global helps

  • Compare the United States with other countriesSet the United States beside other countries on investment momentum, fundamentals and trade access, before site, tax and legal work.
  • Find advisors and service firmsAsk an advisory firm a scoped, paid question, or browse firms that list their own services, from legal work to logistics.
  • Organize your next stepsKeep each product and market in a project, with a roadmap of steps you work through.

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Promote:Connecticut is an independent guide by Promote:Global, not an official government portal. The organizations named here are independent public and membership bodies, not Promote:Global partners, and every link goes to their own site.

Facts read from public sources, with an editorial cut-off of November 3, 2026. Nothing here is investment, legal, tax or sanctions advice. Check current status with the organization before you rely on it.