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How to Start an LLC in Connecticut
Forming an LLC in Connecticut costs $120 in state filing fees. Here are the five steps, the ongoing costs, and the official links.
1Step 1: Choose your LLC name
Your name must be distinguishable from existing Connecticut entities and include "LLC" or "Limited Liability Company". Search the Connecticut business records before filing.
2Step 2: Appoint a registered agent
You need a registered agent with a physical street address in Connecticut who can accept legal mail during business hours. If you don't live there, or want to keep your home address off public records, use a commercial agent. See our service comparison.
3Step 3: File your formation document
File with the state for $120. Most states accept online filings, which are usually the fastest. Prefer someone else to handle it?
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4Step 4: Write an operating agreement
Most states don't require you to file one, but banks often ask for it, and it protects your liability shield, especially for multi-member LLCs.
5Step 5: Get an EIN from the IRS
An EIN is free from the IRS. Read our EIN guide.
Staying compliant in Connecticut
Annual report $80. Due: March 31. See the full Connecticut LLC cost breakdown.
FAQ
How much does it cost to start an LLC in Connecticut?
The Connecticut state filing fee is $120. Ongoing: Annual report $80.
Do I need a registered agent in Connecticut?
Yes. Every Connecticut LLC must keep a registered agent with a physical address in Connecticut. You can be your own agent if you live there, or hire a commercial registered agent.
When is the Connecticut LLC annual report due?
March 31.
Last updated 2026-10-11.