e-SecretaryOfState.comEvery U.S. business filing office on one page. Free, no account, since 2003.

All jurisdictions

Connecticut

Connecticut Secretary of State - Business Services Division

Contact for business filings

Phone
860-509-6003
Fax
(860) 509-6068
Email
[email protected]
Mail filings to
Business Services Division, Connecticut Secretary of the State, P.O. Box 150470, Hartford, CT 06115-0470
Walk in
State Office Building, 165 Capitol Avenue, Suite 1000, Hartford, CT 06106 State Office Building (BSD walk-in)

Filing facts

  • Form an LLC: $120 state fee
  • Register a foreign LLC: $120 state fee
  • LLC annual report: $80 state fee
  • Franchise tax: applies.
  • How you can file an LLC formation: onlineemailfaxmailwalk in
  • Every Connecticut corporation and LLC must keep a registered agent with a street address in Connecticut.

Fees are the statutory amounts on file as of 2026-08-04; the state may add processing or expedite charges.