Gullia Filing
Connecticut state guide - 6 lessons

How to start an LLC in Connecticut

Connecticut forms an LLC with a Certificate of Organization filed for $120 through the Secretary of the State's Business Services Division, almost all of it handled online through a Business.CT.gov account. The state repealed its separate $250 Business Entity Tax back in 2020, so the main recurring state-level cost now is the $80 Annual Report due every March 31. See the Connecticut LLC cost breakdown for current combined fees, or use Gullia Filing to form an LLC in Connecticut without tracking down each form yourself. This guide covers naming, the registered agent, the Certificate of Organization filing, tax registration with the Department of Revenue Services, licensing, and the Annual Report in the order you will need them.

Connecticut LLC facts at a glance

Connecticut LLC facts at a glance
Official filing agencyConnecticut Secretary of the State, Business Services Division
Formation documentCertificate of Organization
State filing fee$120
Filing methodsOnline through a Business.CT.gov account, Mail to the Business Services Division in Hartford, In person, with expedited service available
Typical processing (recent)3-5 business days
Typical expedited processing24 hours for an extra $50
Registered agentRequired
Annual Report$80, due March 31
Late penaltyAdministrative dissolution after continued non-filing
State-level business taxNo LLC franchise tax on pass-throughs. C-Corp elections pay 7.5% corporate income tax + surcharge.
Publication requirementNone
Certificate of Organization fee$120, payable by check to the Secretary of the State or by card online with a service fee
Registered agent requirementEvery Connecticut LLC must continuously maintain a registered agent with a Connecticut business address who accepts the appointment before the Certificate of Organization is accepted
Annual Report$80, filed online only, due each year between January 1 and March 31
Business Entity TaxThe former $250 biennial Business Entity Tax was repealed for tax years beginning on or after January 1, 2020, and no longer applies
Individual income taxGraduated rates from 2% up to 6.99% apply to Connecticut-resident LLC members on their share of pass-through income

Processing times reflect recent official guidance and change often. Check the Connecticut Secretary of the State, Business Services Division current processing calendar before you rely on a date.

File it yourself

Connecticut accepts filings directly from business owners. You do not need us, or any other company, to form your LLC. Here is the official portal.

Business.CT.gov

The Connecticut lessons

  1. 1Name your Connecticut LLCRequired wording, the distinguishable name standard, and how to check availability before filing.
  2. 2Appoint your Connecticut registered agentWho qualifies, the acceptance requirement, and why the agent connects to your Annual Report.
  3. 3File the Certificate of OrganizationThe $120 fee, what the form requires, and filing online through Business.CT.gov.
  4. 4Get an EIN and register with the Department of Revenue ServicesThe free IRS EIN, DRS registration, and what triggers sales and withholding tax accounts.
  5. 5Connecticut LLC taxes, licences and permitsGraduated personal income tax on members, sales tax registration, and local licensing.
  6. 6File your Connecticut Annual Report and stay compliantThe $80 fee, the March 31 deadline, the retired Business Entity Tax, and ongoing compliance.
Start lesson 1

Related Gullia Filing pages

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Official sources

Last reviewed: September 2026 - reviewed by Gullia Filing Legal & Formation Team, Corporate formation specialists and registered agents