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How to Start an LLC in Connecticut: Fees, Filings and Annual Requirements

Forming an LLC in Connecticut: the state filing fee, how to file, name rules, registered agent, annual report, state taxes, DBA and sales tax permit — from the official state sources.

Quick answers for Connecticut

LLC filing fee
The Certificate of Organization (including appointment of a statutory agent) costs $120. Expedited service is $50 per transaction and is available only online. Connecticut Secretary of the State, Domestic Limited Liability Companies Forms and Fees (Business.CT.gov); Fee Schedule (revised 07/01/2020)
Annual report
Connecticut LLCs must file an annual report electronically with the Secretary of the State, online between January 1 and March 31 each year. The fee is $80. Annual reports must be filed online through Business.CT.gov. Conn. Gen. Stat. § 34-247k; Connecticut Secretary of the State, Domestic Annual Report Forms and Fees and Fee Schedule
How to file
File a Certificate of Organization, which includes the appointment of a statutory (registered) agent, with the Secretary of the State's Business Services Division. Most filings can be made online through a Business.CT.gov account; Connecticut Secretary of the State, Domestic Limited Liability Companies Forms and Fees

Last verified: 2026-10-27

Forming the LLC

LLC filing feeThe Certificate of Organization (including appointment of a statutory agent) costs $120. Expedited service is $50 per transaction and is available only online.
Source: Connecticut Secretary of the State, Domestic Limited Liability Companies Forms and Fees (Business.CT.gov); Fee Schedule (revised 07/01/2020)
How to fileFile a Certificate of Organization, which includes the appointment of a statutory (registered) agent, with the Secretary of the State's Business Services Division. Most filings can be made online through a Business.CT.gov account; paper filings are also available.
The pages reviewed do not state a typical processing time.
Source: Connecticut Secretary of the State, Domestic Limited Liability Companies Forms and Fees
Name rules and reservationThe name of a Connecticut LLC must contain the words "limited liability company" or the abbreviation "L.L.C." or "LLC." An Application for Reservation of Name costs $60; transferring a reserved name also costs $60.
Source: Conn. Gen. Stat. § 34-243k(a); Connecticut Secretary of the State Fee Schedule
Registered agentAn LLC must appoint a registered (statutory) agent in its Certificate of Organization. Permitted agents include a natural person who is a Connecticut resident and certain business entities, and the agent must have a place of business in Connecticut. A Change of Agent costs $50, and a change of the agent's address costs $50.
Source: Conn. Gen. Stat. § 34-243n; Connecticut Secretary of the State, Domestic LLC Forms and Fees and Fee Schedule
Operating agreementConnecticut law defines an operating agreement as the members' agreement "whether oral, implied, in a record or in any combination thereof," so it does not have to be written. The Certificate of Organization is the document filed with the state; no filing of the operating agreement is listed among the Secretary of the State's LLC forms.
Whether an operating agreement is mandatory was not stated in the sections reviewed.
Source: Conn. Gen. Stat. § 34-243a(20); Connecticut Secretary of the State, Domestic LLC Forms and Fees

Keeping the LLC in good standing

Annual reportConnecticut LLCs must file an annual report electronically with the Secretary of the State, online between January 1 and March 31 each year. The fee is $80. Annual reports must be filed online through Business.CT.gov.
A late-filing penalty was not found on the pages reviewed.
Source: Conn. Gen. Stat. § 34-247k; Connecticut Secretary of the State, Domestic Annual Report Forms and Fees and Fee Schedule
Sales tax permitBusinesses that will make sales in Connecticut register with the Department of Revenue Services (DRS) through myconneCT for a Sales and Use Tax Permit. There is a $100 fee for registering to collect sales and use tax. A permit is needed for each location, and even one-day sellers at fairs or craft shows need one.
Source: Connecticut DRS, Sales and Use Tax Information page
DBA / assumed nameTrade names are not registered with the Secretary of the State. Connecticut General Statutes § 35-1 requires fictitious trade names to be registered with the Town Clerk of the town where the business is or will be conducted.
Source: Conn. Gen. Stat. § 35-1; Connecticut Secretary of the State Fee Schedule

Out-of-state LLCs and closing

Registering an out-of-state LLCAn out-of-state LLC files a Foreign Registration Statement with the Secretary of the State. The fee is $120. It also files the $80 annual report between January 1 and March 31. A Statement of Withdrawal of Registration costs $120.
Source: Connecticut Secretary of the State Fee Schedule (Foreign Limited Liability Companies)
Closing an LLCFile a Certificate of Dissolution with the Secretary of the State (online available). The fee is $0.
Source: Connecticut Secretary of the State, Domestic LLC Forms and Fees and Fee Schedule

Where to get help in Connecticut

Starting an LLC & Small Business FAQ

How much does it cost to form an LLC in Connecticut?
The Certificate of Organization (including appointment of a statutory agent) costs $120. Expedited service is $50 per transaction and is available only online.
How do you form an LLC in Connecticut?
File a Certificate of Organization, which includes the appointment of a statutory (registered) agent, with the Secretary of the State's Business Services Division. Most filings can be made online through a Business.CT.gov account; paper filings are also available.
What are the LLC name requirements in Connecticut?
The name of a Connecticut LLC must contain the words "limited liability company" or the abbreviation "L.L.C." or "LLC." An Application for Reservation of Name costs $60; transferring a reserved name also costs $60.
Do you need a registered agent for an LLC in Connecticut?
An LLC must appoint a registered (statutory) agent in its Certificate of Organization. Permitted agents include a natural person who is a Connecticut resident and certain business entities, and the agent must have a place of business in Connecticut. A Change of Agent costs $50, and a change of the agent's address costs $50.
Does an LLC have to file an annual report in Connecticut?
Connecticut LLCs must file an annual report electronically with the Secretary of the State, online between January 1 and March 31 each year. The fee is $80. Annual reports must be filed online through Business.CT.gov.
Is an operating agreement required in Connecticut?
Connecticut law defines an operating agreement as the members' agreement "whether oral, implied, in a record or in any combination thereof," so it does not have to be written. The Certificate of Organization is the document filed with the state; no filing of the operating agreement is listed among the Secretary of the State's LLC forms.
How do you register a DBA in Connecticut?
Trade names are not registered with the Secretary of the State. Connecticut General Statutes § 35-1 requires fictitious trade names to be registered with the Town Clerk of the town where the business is or will be conducted.
How do you get a sales tax permit in Connecticut?
Businesses that will make sales in Connecticut register with the Department of Revenue Services (DRS) through myconneCT for a Sales and Use Tax Permit. There is a $100 fee for registering to collect sales and use tax. A permit is needed for each location, and even one-day sellers at fairs or craft shows need one.
How do you register a foreign LLC in Connecticut?
An out-of-state LLC files a Foreign Registration Statement with the Secretary of the State. The fee is $120. It also files the $80 annual report between January 1 and March 31. A Statement of Withdrawal of Registration costs $120.
How do you dissolve an LLC in Connecticut?
File a Certificate of Dissolution with the Secretary of the State (online available). The fee is $0.

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General legal information, not legal advice. Laws change and local rules can differ; check the linked official source or talk to a lawyer about your situation.