Connecticut LLC Name Search

Check if your business name is available in Connecticut before you file, then see Connecticut's LLC naming rules, fees and filing requirements

Connecticut
Filing Fee
$120
Certificate of Organization
Annual Report
$80
Due between January 1 and March 31 each year, starting the year after you form the LLC
Name Reservation
$60
Holds a name for 120 days

How Much Does an LLC Cost in Connecticut?

Filing your Certificate of Organization in Connecticut costs $120. After that, the annual report costs $80 a year and is due between January 1 and March 31 each year, starting the year after you form the LLC.

  • Certificate of Organization

    When you file to form the LLC. Source →

    $120

  • Annual Report

    Due between January 1 and March 31 each year, starting the year after you form the LLC. Annual reports are filed online. Source →

    $80

  • Name reservationOptional

    Holds a name for 120 days. Source →

    $60

Checked against official Connecticut sources on October 23, 2026. Fees change, so confirm with the state before you file.

LLC Requirements in Connecticut

Formation Requirements

Basic Requirements

  • Operating Agreement (recommended)
  • Federal Tax ID (EIN)
  • Business Licenses (if applicable)

Registered Agent

Connecticut requires all LLCs to maintain a registered agent in the state.

Processing Time

Most online filings are accepted automatically.

Expedited service for online filings costs $50.

Source →

Contact the Connecticut Business Filing Office

Search LLC Name isn’t a government website. For an official answer about a name or a filing, contact the state office directly.

Contact Details

Fax

860-509-6069

Address Information

Mailing Address

PO Box 150470, Hartford, CT 06115-0470

Physical Address

165 Capitol Avenue, Suite 1000, Hartford, CT 06106

Official Connecticut Resources

Connecticut LLC Name Search FAQ

Enter the name in the search at the top of this page. It checks Connecticut Secretary of the State (data.ct.gov) records and lists businesses with the same or a similar name. Search close variations too: Connecticut requires a new LLC name to be distinguishable from all other active business names on record with the Secretary of the State. A clear search is a good sign, but the state makes the final call when it reviews your filing.

It must include “Limited Liability Company” or an abbreviation such as “LLC” or “L.L.C.”. Connecticut requires a new LLC name to be distinguishable from all other active business names on record with the Secretary of the State. Words like Bank, Insurance or Trust usually need approval from another agency.

A Connecticut name reservation costs $60 and holds the name for 120 days.

Filing your Certificate of Organization in Connecticut costs $120. After that, the annual report costs $80 a year and is due between January 1 and March 31 each year, starting the year after you form the LLC.

Most online filings are accepted automatically. Expedited service for online filings costs $50.

Yes, Connecticut requires every LLC to keep a registered agent in the state who can receive legal documents for the business.

Connecticut requires an annual report ($80), due between January 1 and March 31 each year, starting the year after you form the LLC. You also need to keep a registered agent in the state.

Connecticut trade names aren’t registered with the Secretary of the State. File a trade name certificate with the town clerk where the business operates.

LLC Name Search in Other States