How to Register an LLC in Connecticut (2025 Guide)

Forming a Limited Liability Company (LLC) in Connecticut is a smart way to protect your personal assets and operate your business legally. The process is straightforward and mostly handled online through the Connecticut Secretary of State.

This 2025 guide breaks down every step—from choosing a name to filing your annual report—so you can confidently start your LLC and stay compliant.

Step 1: Choose a Business Name

Your LLC name establishes your brand identity and must meet Connecticut’s naming guidelines.

Requirements:

• Must include “Limited Liability Company,” “LLC,” or “L.L.C.”

• Must be unique and distinguishable from other registered businesses in Connecticut.

• Cannot contain restricted words like “bank” or “insurance” without proper authorization.

How to check name availability:

• Use the Connecticut Secretary of State’s Business Records Search to confirm your preferred name is available.

• If needed, you can reserve a name for future use by filing a Name Reservation online.

Tip: Choose a name that’s easy to remember, professional, and aligns with your business identity.

Step 2: Appoint a Registered Agent

Every LLC in Connecticut must designate a Registered Agent to handle legal and tax documents on the company’s behalf.

Requirements:

• Must have a physical street address in Connecticut (PO boxes are not allowed).

• Must be available during regular business hours to receive official mail.

• Can be an individual resident or a business entity authorized to operate in Connecticut.

Why this matters:
Your Registered Agent ensures you receive critical documents like service of process and state notifications on time. Failing to maintain an agent can result in administrative dissolution.

Step 3: File the Certificate of Organization

The Certificate of Organization is the legal document that officially creates your LLC in Connecticut.

Filing details:

• File online through the Connecticut Secretary of State’s CONCORD portal or by mail.

• Filing fee: $120.

• Processing time: Typically 3 business days when filed online.

Information required:

• LLC name and principal office address

• Registered Agent’s name and address

• Names and addresses of LLC organizers or members

• Management structure (member-managed or manager-managed)

Once approved, your LLC is legally recognized in Connecticut.

Step 4: Create an Operating Agreement (Recommended)

Although not required by Connecticut law, creating an Operating Agreement is essential for defining how your LLC functions.

Purpose of an Operating Agreement:

• Establishes each member’s ownership percentage and voting rights

• Defines management duties and decision-making procedures

• Outlines profit and loss distribution

• Provides a plan for adding or removing members

• Helps protect your LLC’s limited liability status

Why it matters:
Even for single-member LLCs, having this document proves the LLC is a separate legal entity—helping maintain liability protection.

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Step 5: Obtain an EIN from the IRS

Your Employer Identification Number (EIN) serves as your business’s federal tax ID and is required for most financial and tax activities.

How to get an EIN:

• Apply free through the IRS website (instant issuance for eligible applicants).

• Non-U.S. residents can apply by fax or mail using Form SS-4.

When you’ll need it:

• Filing federal and state taxes

• Opening business bank accounts

• Hiring employees

• Applying for business licenses or credit

Step 6: Obtain Permits and Licenses

Depending on your industry, you may need specific state or local licenses to operate legally in Connecticut.

Examples include:

• Local business permits from your city or county

• Health or safety-related licenses (for food service or salons)

• Professional licenses (for accountants, real estate agents, etc.)

Visit the Connecticut Department of Consumer Protection (DCP) website or your local municipality’s business office to confirm what applies to your business.

Step 7: Stay Compliant with Annual Requirements

After your LLC is formed, you must maintain compliance to keep it active and in good standing.

Annual obligations:

• File an Annual Report: Due each year by March 31.

  • Filing fee: $80, filed online through the Secretary of State.

  • Updates your LLC’s contact, ownership, and Registered Agent information.

• Maintain a Registered Agent: Ensure the agent’s address and availability remain current.

• Keep business records updated: Store all important filings, agreements, and tax documents securely.

Penalties for non-compliance:
Failure to file your annual report or maintain an agent may result in penalties or administrative dissolution of your LLC.

Why Proper Accounting Matters for Connecticut LLCs

Once your LLC is formed, managing finances accurately is key to long-term success. Proper accounting helps with compliance, tax reporting, and understanding your company’s performance.

Good accounting practices include:

• Keeping business and personal finances separate

• Tracking income and expenses for quarterly or annual tax filings

• Preparing accurate financial statements for decision-making

• Filing taxes on time with both state and federal authorities

Partnering with a professional accounting service ensures that your LLC stays compliant, organized, and financially healthy.

Summary

Starting an LLC in Connecticut in 2025 involves a few key steps—choosing a unique name, designating a Registered Agent, filing your Certificate of Organization, and setting up your Operating Agreement and EIN.

After registration, make sure to file your annual report and manage your financial records properly to keep your LLC in good standing. By following these steps, you’ll build a strong foundation for your business in Connecticut’s growing market.

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