Connecticut Secretary of the State, Business Services Division

Connecticut business entity search

Look up a Connecticut corporation, LLC, or partnership by name, business ID, or EIN. The Secretary of the State's own registry file is searched here, alongside federal filings.

Connecticut registry: 1,278,381 registrations (all registrations, every status), file dated 2026-10-07. Federal filings are searched at the same time.

Connecticut registry at a glance

Registry agency	Connecticut Secretary of the State, Business Services Division
Office	Secretary of the State: Stephanie Thomas
Phone	(860) 509-6002
Address	State Office Building, 165 Capitol Avenue, Suite 1000, Hartford, CT 06106
Mailing address	Secretary of the State, Attention: Administrative Offices, P.O. Box 150470, Hartford, CT 06115-0470
Hours	Monday to Friday, 8:30 am to 4:00 pm
Registry number	Business ALEI (Authoritative Legal Entity Identifier)

What this page can tell you

Registry status, business ID, business type, registration date, and mailing address, from the Connecticut Secretary of the State, Business Services Division open-data file (every status, active and ended), plus the EIN and federal filings where they exist.

What only the state can tell you

Registered agent, principals, filing history, certificates of legal existence, and anything filed since the file date.

Three numbers, three agencies

Asking for the wrong number is a common reason a search comes back empty.

Number	Issued by	What it identifies
Federal EIN	Internal Revenue Service	Identifies the business for federal tax. It is the same number in every state.
Business ALEI (Authoritative Legal Entity Identifier)	Connecticut Secretary of the State, Business Services Division	Identifies the entity's record in the state registry.
Connecticut tax registration number	Connecticut Department of Revenue Services (DRS)	DRS registers businesses for state taxes such as sales and use tax. That account is separate from the Secretary of the State ALEI and from the federal EIN issued by the IRS.

What a Connecticut status means

Status	What it means
Active	The business is on record and has not been dissolved, forfeited, revoked, or withdrawn.
Forfeited	The business lost its rights, typically after failing to file required annual reports.
Dissolved	The business has ended its existence, by its own filing or by the Secretary of the State.
Withdrawn	A foreign business withdrew its registration to transact business in Connecticut.
Revoked	The Secretary of the State revoked a foreign business's registration.
Cancelled	The registration or filing was cancelled.
Merged	The business merged into another entity.

Fees and annual filings

LLC formation	$120 (Certificate of Organization, including appointment of statutory agent)
Corporation formation	$250 (Certificate of Incorporation, which includes the minimum franchise tax for up to 20,000 authorized shares) plus $150 for the Organization and First Report
Annual filing	Annual Report
Annual fee, LLC	$80
Annual fee, corporation	$150 for a stock corporation; $50 for a non-stock corporation
When it is due	LLCs, LLPs, and LPs file online each year between January 1 and March 31. A corporation's due date is shown on its record and falls on its registration anniversary.
Late filing	No late fee was found on the pages read. An overdue business cannot get a certificate of legal existence, and the Secretary of the State may dissolve it.
Filed with	Connecticut Secretary of the State, online through Business.CT.gov
Minimum franchise tax on authorized shares	Connecticut Secretary of the State. Paid when the certificate of incorporation is filed, and again when an amendment increases authorized shares. The $250 certificate of incorporation fee includes the minimum franchise tax for up to 20,000 authorized shares; more shares follow a separate franchise schedule. This is a filing-time charge, not the Department of Revenue Services corporation business tax.

Fee schedule revised July 1, 2020. Annual reports are filed online.

As published by the Connecticut Secretary of the State, Business Services Division, checked 2026-10-06. Fees change, and the official schedule decides.

Forming or running a business in Connecticut

Connecticut calls it a statutory agent. The Certificate of Organization for an LLC must appoint one, and the annual report updates the agent's details.

Official Connecticut business forms and fees

Connecticut businesses on file

The largest organizations with a Connecticut address in the federal filings searched here, biggest first.

AMPHENOL CORPORATION & AFFILIATED COMPANIESEIN 22-2785165
RTX CORPORATIONEIN 06-0570975
CITIGROUP INC.EIN 52-1568099
RAYTHEON COMPANYEIN 95-1778500
HARMAN INTERNATIONAL INDUSTRIES, INC.EIN 11-2534306
STANLEY BLACK & DECKER, INC.EIN 06-0548860
UNITED RENTALS (NORTH AMERICA), INC.EIN 86-0933835
XPO LOGISTICS, INC.EIN 03-0450326
XEROX CORPORATIONEIN 16-0468020
PITNEY BOWES INC.EIN 06-0495050
UNITED RENTALS, INC.EIN 06-1522496
GARTNER, INC.EIN 04-3099750
SS&C TECHNOLOGIES, INCEIN 06-1169696
HUBBELL INCORPORATED & SUBSIDIARIESEIN 06-0397030
CRANE COMPANYEIN 88-2846451
KAMAN CORPORATIONEIN 06-0613548
FACTSET RESEARCH SYSTEMS INC.EIN 13-3362547
ROLLER BEARING CO OF AMERICA, INC.EIN 13-3426227
HEXCEL CORPORATIONEIN 94-1109521
PETROLEUM HEAT AND POWER CO., INC.EIN 06-1183025
BARNES GROUP INC.EIN 06-0247840
ALKEGENEIN 06-0865505
MACDERMID, INC.EIN 06-0435750
WORLD WRESTLING ENTERTAINMENT, INC.EIN 04-2693383

All 213 Connecticut businesses on file

Sources

Facts on this page come from the official pages below, checked 2026-10-06. A fact that could not be confirmed on an official page is left out.