An LLC formed outside Connecticut that does business inside Connecticut must register as a foreign LLC and appoint a Connecticut registered agent. Here is what the requirement covers, when it is triggered, and what foreign qualification looks like in Connecticut.
"Foreign" in Connecticut business law does not mean international. It means out-of-state. A Delaware LLC operating in Connecticut is, from Connecticut's perspective, a foreign LLC — even though both are U.S. entities. Connecticut requires foreign LLCs that transact business inside the state to register with the Connecticut Secretary of the State, Business Services Division and to designate a Connecticut registered agent with a physical Connecticut address.
The registered agent requirement is the same as for Connecticut-formed LLCs: a person or company with a real Connecticut street address, available during business hours, who agrees to accept service of process and state correspondence on behalf of your LLC. P.O. boxes do not count. Out-of-state addresses do not count. The whole point is that Connecticut courts and the Connecticut Secretary of the State need a reliable in-state delivery point.
Annual report fee increased from $20 to $80 effective July 1, 2020.
Connecticut does not require every LLC that touches the state to register. Occasional sales to Connecticut customers from out of state generally do not trigger the rule. The threshold is "transacting business" — a phrase Connecticut courts and the Connecticut Secretary of the State interpret based on the facts. The activities that almost always trigger it:
Activities that usually do not trigger it: maintaining a bank account in Connecticut, holding a single isolated meeting, defending a lawsuit, or shipping product to Connecticut customers from another state. Connecticut statutes list specific safe harbors; verify with the Connecticut Secretary of the State or counsel if the call is close.
Connecticut requires a Certificate of Good Standing (sometimes called a Certificate of Existence) from the home state, dated within 30 to 90 days. Order it from the home Secretary of State before filing in Connecticut.
If your home-state name is already taken in Connecticut, you will file under an assumed or alternate name for Connecticut purposes. Connecticut runs the distinguishability check during the foreign qualification filing.
List the agent's name and Connecticut street address on the application. Our Hartford office serves as the agent for foreign-qualified LLCs the same way it does for Connecticut-formed LLCs.
Submit the foreign qualification application (sometimes called Application for Certificate of Authority) through the Connecticut Secretary of the State at portal.ct.gov. Filing fees vary by state — verify with the Connecticut Secretary of the State for the current Connecticut amount.
Once registered, your foreign LLC owes the same Connecticut annual report and any state-specific tax filings that domestic LLCs do. The home-state filings continue separately.
Operating an out-of-state LLC in Connecticut without registering carries real consequences. Connecticut typically:
None of these are guaranteed in every fact pattern, but they are the typical exposure. Foreign qualification is one of the most common compliance gaps we see — and one of the cheaper ones to fix once you are aware of it.
For Connecticut-formed LLCs, the registered agent is one piece of a familiar setup. For foreign LLCs, the agent is often the LLC's only physical presence in Connecticut — and the only address through which the state can reach you. Service of process delivered to the registered agent is legally valid, even if no one tells you about it for days. Choose an agent that scans and forwards mail the same business day.
Our Hartford office handles foreign-qualified LLCs the same way it handles domestic ones: scanned service of process within the hour during business hours, Connecticut state correspondence forwarded by email, and annual report reminders 60, 30, and 7 days before the deadline. Verify with the Connecticut Secretary of the State for the current foreign qualification fee and processing time.
Reservation takes three minutes. A formation specialist in Hartford handles the rest.