Last updated: May 2026 for 2026 filing fees and requirements.
Starting an LLC in Connecticut is a clear, step-by-step process. Your Certificate of Organization costs $120 and gets approved within 3 business days when filed online, making it one of the quickest states for business formation.
From my experience forming LLCs across multiple states, Connecticut stands out for its efficiency and reasonable costs.
That’s exactly what this guide delivers. Here’s what you need to do:
- Choose an LLC Name
- Select a Registered Agent
- File a Certificate of Organization
- Create an Operating Agreement
- Get an EIN
Now, you have two paths forward. Handle everything yourself using this guide (it’ll take you about 2-3 hours total), or hire professionals to handle the paperwork while you focus on building your business.
If you want the professional route, I recommend:
- Bizee – They’ve handled thousands of Connecticut LLCs:
- ZenBusiness – Excellent for ongoing business support:
How Much Does it Cost to Start an LLC in Connecticut?
Starting an LLC in Connecticut costs $120. This covers your Certificate of Organization filing fee with the Connecticut Secretary of State.
After formation, you’ll pay $80 per year for your Annual Report to keep your LLC in good standing. This annual fee is due by March 31st each year.
These costs make Connecticut relatively affordable compared to states like California LLC ($70 plus $800 annual fee) or New York ($200 filing fee).
How Long Does it Take to Start an LLC in Connecticut?
If you file online, your LLC gets approved in 2-3 business days. Filing by mail takes 7-10 business days plus mail time, so online filing is much faster.
The state processes applications quickly, especially compared to slower states that can take weeks for approval.
Here’s Step by Step Start an LLC in Connecticut.
Step 1: Search and Choose Your LLC Name.
Your first step to start an LLC in Connecticut is picking an available business name. Connecticut has specific naming rules you must follow:
Your LLC name must include “Limited Liability Company,” “LLC,” or “L.L.C.” Most business owners choose “LLC” because it looks professional and clean.
The name must be distinguishable from existing businesses in Connecticut. Two companies can’t have identical names in the state.
You cannot use certain restricted words like “incorporated,” “corp,” or other terms reserved for different business structures.
How to Check Name Availability in Connecticut.
Use Connecticut’s Business Records Search to verify your preferred name is available. This free database shows all registered businesses in the state.
Search variations of your name to make sure nothing too similar already exists. Even slight differences might cause approval delays.
Consider checking domain name availability too. Securing a matching website domain protects your brand, even if you’re not building a website immediately.
Step 2: Choose a Connecticut Registered Agent
Every Connecticut LLC needs a registered agent. This Connecticut registered agent person or company accepts legal documents and state notices on behalf of your business.
Your registered agent must have a physical street address in Connecticut. PO boxes aren’t allowed. The agent’s name and address become public record when you file.
Your Registered Agent Options
You have three choices for your registered agent:
1, Yourself; You can serve as your own registered agent if you have a Connecticut address and will be available during business hours.
2, A Friend or Family Member – Anyone with a Connecticut address can be your registered agent, but they need to understand the responsibility.
3, A Professional Registered Agent Service – This option provides privacy and reliability. Professional services have experience handling legal documents properly.
Why Consider a Professional Service?
If you don’t have a Connecticut address, work irregular hours, or want to keep your address private, a registered agent service makes sense.
Your home address won’t appear on public records, and you won’t miss important legal documents.
Professional services also scan and upload documents to online accounts, making document management easier.
Step 3: File Your Certificate of Organization
Filing your Certificate of Organization officially creates your LLC in Connecticut. This document gets submitted to the Connecticut Secretary of State.
The filing fee is $120 when submitted online. You can also file by mail, but online processing is faster and more convenient.
Required Information for Your Certificate
Your Certificate of Organization needs these details:
- Your LLC name (exactly as you want it registered)
- Your registered agent’s name and Connecticut address
- Your business purpose (can be general like “any lawful business activity”)
- Management structure (member-managed or manager-managed)
- Names and addresses of LLC members or managers
Where to File
File your Certificate of Organization online through the Connecticut Secretary of State’s business portal. Online filing is faster, more convenient, and gives you immediate confirmation of submission.
You can also file by mail, but this adds processing time and delays your approval.
Download a free LLC Operating Agreement: Get the free template
Step 4: Create an Operating Agreement
Connecticut doesn’t legally require an Operating Agreement, but creating one protects your business and personal interests.
An Operating Agreement serves as your LLC’s rulebook. It outlines ownership percentages, management structure, profit distribution, and procedures for adding or removing members.
Why You Need an Operating Agreement
Banks often require an Operating Agreement when you open business accounts. Courts also look for Operating Agreements when determining whether your LLC is legitimate during legal disputes.
Having clear written rules prevents disputes between business partners and protects your limited liability status.
What to Include
Your Operating Agreement should cover:
- Organization details and business purpose
- Management structure and voting procedures
- Capital contributions from each member
- Profit and loss distribution rules
- Procedures for adding or removing members
- Dissolution procedures
How important is an operating agreement, & Do you need to pay for it?
Operating Agreements involve complex legal language. While you can find templates online, having an attorney review the document ensures it properly protects your interests and complies with Connecticut law.
Professional LLC formation services often include customized Operating Agreements as part of their packages.
Step 5: Get Your EIN (Federal Tax ID Number)
Your EIN (Employer Identification Number) works like a Social Security number for your business. You need this number to open business bank accounts, file taxes, and hire employees.
How Much Does An EIN Cost?
Getting an EIN from the IRS is completely free and takes about 15 minutes when done online.
How to Apply for an EIN?
US Citizens and Residents: Apply online through the IRS website if you have a Social Security Number or Individual Taxpayer Identification Number.
Non-US Residents: You can still get an EIN, but must apply by fax or mail since the online system requires a US tax ID.
The IRS processes online applications immediately during business hours. Mail and fax applications take 1-3 months for processing.
What You’ll Need for EIN?
Have this information ready when applying:
- Your LLC’s legal name and address.
- Your registered agent information.
- Names and Social Security Numbers of all LLC members.
- Your business start date.
- Your business activity description.
After Your Connecticut LLC is Approved: Next Steps?
Once Connecticut approves your LLC, several additional steps help ensure your business operates legally and efficiently.
Open a Business Bank Account For the Connecticut LLC
Opening a dedicated business bank account keeps your personal and business finances separate. This separation protects your limited liability status and makes accounting much easier.
Banks typically require your Certificate of Organization, Operating Agreement, and EIN to open business accounts.
Get Required Business Licenses and Permits to Operate in Connecticut
Connecticut doesn’t have a general state business license, but you must register with the Department of Revenue Services and get a Connecticut State Tax Identification Number.
Depending on your business type and location, you might need additional licenses or permits. Check with your city or county for local requirements.
How do You file an annual report in Connecticut?
All Connecticut LLCs must file an Annual Report every year. The filing fee is $80, and reports are due by March 31st.
Your first Annual Report is due the year after your LLC was approved. For example, if your LLC was approved in February 2026, your first Annual Report is due by March 31, 2026.
You can file Annual Reports online or by mail. Online filing is easier and faster.
How are LLCs taxed in Connecticut?
LLCs don’t pay federal income taxes directly. Instead, profits and losses “pass through” to your personal tax return.
Single-member LLCs are taxed like sole proprietorships. Multi-member LLCs are taxed like partnerships.
You can also elect corporate tax treatment by filing forms with the IRS, though most small business owners stick with pass-through taxation.
Connecticut honors federal tax elections, so your state tax treatment usually matches your federal election.
Why Connecticut is Great for LLCs
Connecticut offers several advantages for LLC formation. The state processes applications quickly, keeps filing fees reasonable, and maintains efficient online systems.
The state’s business-friendly environment includes strong legal protections for LLC owners and straightforward ongoing compliance requirements.
Connecticut’s location provides easy access to major East Coast markets while offering lower costs than states like New York or Massachusetts.
LLC in Connecticut: Formation Services vs DIY Formation Method
You can absolutely start an LLC in Connecticut yourself using this guide. The process is straightforward, and you’ll save money on professional fees.
However, if you’re busy running your business, have complex ownership structures, or want ongoing support, professional services provide valuable expertise and time savings.
Bizee offers comprehensive LLC formation starting at reasonable rates, plus ongoing business support.
ZenBusiness provides excellent customer service and helpful business tools beyond just formation.
Both services handle the paperwork, provide registered agent services, and offer additional business support as your company grows.
Start Your Connecticut LLC Today
Starting an LLC in Connecticut protects your personal assets, provides tax benefits, and establishes your business as a legitimate entity. The process takes just a few hours when you follow these steps, and your LLC gets approved quickly.
Whether you handle formation yourself or hire professionals, the most important thing is getting started. Your business deserves the protection and credibility that comes with proper LLC formation.
Connecticut’s efficient system makes the process smooth, so you can focus on what matters most – building a successful business.
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