Connecticut LLC Requirements

Updated for 2026 · Official Secretary of State Website

Connecticut positions itself as a gateway between New York and Boston, with a strong financial services sector and high median household income. LLC formation costs are moderate with a $120 filing fee and $80 annual report. The state's proximity to major metro markets makes it a practical choice for businesses serving the Northeast corridor.

Filing Fee

$120

One-time state fee

Annual Fee

$80

Per year

Processing

Immediate to 3 business days

Online filing

Deadline

March 31

Annual report due

Average Cost

Connecticut's $120 filing fee is near the national average, while the $80 annual report fee is slightly above average for ongoing LLC maintenance costs.

Notable Facts About Connecticut LLCs

Connecticut has the highest per capita income of any US state
Annual reports must be filed online — no paper filing option is available
The filing window for annual reports runs from January 1 to March 31
Connecticut uses 'Certificate of Organization' rather than 'Articles of Organization'

Tax Information for Connecticut LLCs

Connecticut has a progressive income tax with rates from 3% to 6.99%. LLCs with more than one member may owe the pass-through entity tax (PET). There is a $250 biennial business entity tax for LLCs. The state also has a 6.35% sales tax.

Formation Steps

1

Choose a Name for Your LLC
Select a unique business name that complies with Connecticut naming requirements. The name must include "LLC" or "Limited Liability Company" and cannot be the same as an existing registered business in Connecticut.
2

Appoint a Registered Agent
Designate a registered agent with a physical address in Connecticut who can receive legal documents and official correspondence on behalf of your LLC.
3

File Articles of Organization
Submit your Articles of Organization (also called a Certificate of Formation in some states) to the Connecticut Secretary of State. This is the official document that creates your LLC.
4

Create an Operating Agreement
Draft an operating agreement that outlines ownership percentages, member roles, profit distribution, and management structure of your LLC. While not always legally required, it is strongly recommended.
5

Get an EIN from the IRS
Apply for a free Employer Identification Number (EIN) from the IRS. You'll need this for opening a business bank account, hiring employees, and filing taxes.
6

Open a Business Bank Account
Open a dedicated business bank account to keep your personal and business finances separate. This helps maintain your LLC's liability protection.
7

File Annual Reports
Connecticut requires periodic reports due by March 31. The filing fee is $80. Mark your calendar to avoid late fees or administrative dissolution.

Visit Official SOS Website

Annual Report Details

Fee: $80

Deadline: March 31

Annual report due between January 1 and March 31 each year.

Annual report filed online only.

Need a Registered Agent in Connecticut?

Every Connecticut LLC must have a registered agent with a physical address in the state. A registered agent service ensures you never miss important legal documents or compliance deadlines.

Compare Registered Agent Services

Frequently Asked Questions

How much does it cost to form an LLC in Connecticut?

The state filing fee to form an LLC in Connecticut is $120 for the Certificate of Organization. This cost is near the national average compared to other states. Additional costs may include a registered agent service ($50-$300/year) and an operating agreement if you hire an attorney.

What is the annual cost of an LLC in Connecticut?

Connecticut charges $80 for its periodic reporting requirement, due March 31. Annual report filed online only. Connecticut's $120 filing fee is near the national average, while the $80 annual report fee is slightly above average for ongoing LLC maintenance costs.

How long does it take to form an LLC in Connecticut?

Online filing in Connecticut typically takes Immediate to 3 business days. You'll need to file Certificate of Organization with the state. Processing times may vary based on filing volume and the time of year.

Do I need a registered agent in Connecticut?

Yes, Connecticut requires every LLC to have a registered agent with a physical street address in the state. The registered agent receives legal documents, tax notices, and official government correspondence on behalf of your LLC.

What taxes does a Connecticut LLC pay?

Does Connecticut require an operating agreement for LLCs?

While not all states legally require an operating agreement, it is strongly recommended for every LLC in Connecticut. An operating agreement defines ownership structure, member roles, and how the business will be managed. Without one, your LLC will be governed by Connecticut's default LLC laws.