How to Start an LLC in Connecticut

Complete Connecticut LLC Formation Guide - The Constitution State

Connecticut LLC Overview

🎯 Quick Facts: Connecticut LLC
  • Formation Fee: $120
  • Annual Report Fee: $80/year
  • Processing Time: 5-10 business days
  • Online Filing: Available via CONCORD system
  • Statute: Connecticut Limited Liability Company Act (Conn. Gen. Stat. Β§ 34-100 et seq.)
  • Series LLC: βœ… Allowed
  • Professional LLC: βœ… Allowed for licensed professionals

What is a Connecticut LLC?

A Connecticut Limited Liability Company (LLC) is a flexible business structure that combines:

Connecticut LLC vs Other States

Factor Connecticut Delaware Wyoming
Formation Fee $120 $90 $100
Annual Report $80/year $300/year $60/year
Year 1 Total $200 $390 $160
Ongoing Annual Cost $80 $300 $60
Series LLC βœ… Yes βœ… Yes ❌ No
Publication Requirement ❌ None ❌ None ❌ None

Why Form a Connecticut LLC?

βœ… Advantages

❌ Disadvantages

πŸ’‘ The "Home State Rule"

If you'll do business primarily in Connecticut (have an office, employees, or significant sales here), you'll owe CT taxes anyway, even if you form in Delaware or Wyoming.

In that case, forming in CT saves you:

  • Foreign LLC registration fee ($120)
  • Registered agent fees in two states
  • Double annual reports

When to Choose Connecticut

βœ… Form in Connecticut If:

πŸ€” Consider Delaware If:

πŸ€” Consider Wyoming If:

Connecticut LLC Types

LLC Type Description Best For
Single-Member LLC One owner; disregarded entity for tax purposes (taxed as sole proprietorship) Solo entrepreneurs, freelancers, single-owner businesses
Multi-Member LLC 2+ owners; taxed as partnership by default Co-founded businesses, family businesses, joint ventures
Professional LLC (PLLC) For licensed professionals (attorneys, doctors, CPAs, etc.) Law firms, medical practices, accounting firms, architecture firms
Series LLC Parent LLC with multiple protected series (separate liability compartments) Real estate investors, franchisors, businesses with multiple product lines
Foreign LLC LLC formed in another state but registered to do business in CT Out-of-state LLCs expanding into Connecticut

Official Connecticut Resources

How to Form a Connecticut LLC - Step-by-Step

Follow these steps to form your Connecticut LLC properly and efficiently:

1Choose a Connecticut LLC Name

Your LLC name must comply with Connecticut naming requirements:

Required Elements

Name Availability Check

  1. Search the Connecticut Business Entity Database
  2. Check for exact matches and similar names
  3. If available, you can reserve the name for 120 days ($60 fee) using Form LLC-1A
πŸ’‘ Pro Tip: Domain Name

Before finalizing your LLC name, check domain availability at a registrar like Namecheap or GoDaddy. Having a matching .com domain is valuable for your online presence.

2Designate a Registered Agent

Connecticut requires every LLC to have a registered agent with a physical CT address to receive legal documents.

Registered Agent Requirements

⚠️ Why Use a Professional Registered Agent?
  • Privacy: Keeps your home address off public records
  • Reliability: Never miss legal documents (lawsuits, subpoenas, tax notices)
  • Professionalism: Avoid embarrassing service of process at your office
  • Convenience: Agent scans and emails you documents immediately

3File Certificate of Organization

File Certificate of Organization (Form LLC-1) with the Connecticut Secretary of State.

Required Information

Filing Methods

  1. Online via CONCORD (recommended):
    • Go to CONCORD system
    • Create account and complete Form LLC-1
    • Pay $120 filing fee by credit card
    • Processing time: 5-10 business days
  2. By mail:
    • Download and complete Form LLC-1
    • Mail to: Connecticut Secretary of State, Commercial Recording Division, P.O. Box 150470, Hartford, CT 06115-0470
    • Include $120 check or money order
    • Processing time: 10-15 business days

Expedited Processing

4Create an Operating Agreement

While Connecticut does NOT legally require an operating agreement, it's essential for every LLC.

Why You Need an Operating Agreement

See the Operating Agreement tab for detailed guidance on what to include.

5Obtain an EIN (Employer Identification Number)

Get a federal EIN (tax ID number) from the IRS. It's free and takes 5-10 minutes online.

When You Need an EIN

How to Get an EIN

  1. Go to IRS EIN Online Application
  2. Complete the application (have your Certificate of Organization handy)
  3. Receive your EIN immediately upon completion
  4. Download and save your EIN confirmation letter (IRS Form CP 575)

6Register with Connecticut Department of Revenue Services (DRS)

Register your LLC with Connecticut DRS for state tax purposes.

What You'll Need to Register For

How to Register

  1. Create account at Connecticut Taxpayer Service Center (TSC)
  2. Complete business registration
  3. Select applicable tax types
  4. Receive Connecticut Tax Registration Number

7Open a Business Bank Account

Keep business and personal finances separate by opening a dedicated business bank account.

Documents You'll Need

8Obtain Business Licenses & Permits

Depending on your business type and location, you may need:

Post-Formation: Maintain Good Standing

After formation, remember to:

Connecticut LLC Costs & Fees

Formation Costs

Item Cost Notes
Certificate of Organization (Form LLC-1) $120 State filing fee (required)
Expedited Processing (same-day) +$50 Optional; must submit by 2 PM
Expedited Processing (2-hour) +$100 Optional
Name Reservation (Form LLC-1A) $60 Optional; reserves name for 120 days
Registered Agent Service $100-300/year Optional but recommended
Operating Agreement Drafting $0-500+ DIY free; attorney-drafted $500-2,000
EIN from IRS Free Apply online at irs.gov
Minimum DIY Formation Cost (Year 1): $120
Typical Formation Cost with Attorney: $500-1,500

Annual Costs & Ongoing Fees

Requirement Cost Frequency
Annual Report $80 Every year (due on anniversary of formation)
Business Entity Tax (minimum) $250 Every year (due April 15)
Registered Agent Service $100-300 Annual (if using service)
Business Licenses/Permits Varies Varies by industry and location
Minimum Annual Cost (Years 2+): $330
Total Cost: Year 1 $450 ($120 formation + $80 report + $250 tax)

Connecticut Business Entity Tax Explained

⚠️ $250 Minimum Business Entity Tax

Connecticut imposes a Business Entity Tax on all LLCs and corporations. Even if your LLC has $0 revenue, you owe the $250 minimum.

The Business Entity Tax is calculated as the greater of:

Business Entity Tax Calculation Examples

Connecticut Gross Income Tax Owed
$0 - $80,000 $250 (minimum)
$100,000 $310 (0.31% of $100K)
$500,000 $1,550 (0.31% of $500K)
$1,000,000 $3,100 (0.31% of $1M)
$10,000,000+ $31,000+ (0.31%, no cap)

Due date: April 15 (same as federal tax deadline)

Form: Form OP-424 (Business Entity Tax Return)

Cost Comparison: CT vs Other States (10 Years)

State Formation Annual Report Business Tax Year 1 Total 10-Year Total
Connecticut $120 $80/year $250/year $450 $3,390
Delaware $90 $300/year $0 $390 $2,790
Wyoming $100 $60/year $0 $160 $640
New Mexico $50 $0 $0 $50 $50
πŸ’‘ Is Connecticut Worth the Cost?

Yes, if you're doing business in Connecticut. The $330/year ongoing cost is higher than some states, but if you operate in CT:

  • You'll owe CT taxes anyway (even if formed elsewhere)
  • You avoid foreign qualification fees ($120)
  • You avoid complexity of maintaining LLC in two states

Consider out-of-state LLC only if:

  • You have NO CT business activity (pure holding company)
  • Minimizing costs is critical priority
  • You want Wyoming/Delaware privacy or legal advantages

Connecticut LLC Operating Agreement

Comprehensive operating agreement guidance...

Connecticut Professional LLC (PLLC)

Licensed professionals forming LLCs in Connecticut...

Connecticut Series LLC

Series LLC structure and benefits...

Connecticut LLC Annual Compliance

Annual reports, tax filings, ongoing requirements...

Connecticut LLC Taxation

Pass-through taxation, Business Entity Tax, S-corp election...

Beneficial Ownership Information (BOI) Reporting

FinCEN BOI reporting requirements for Connecticut LLCs...

Connecticut LLC Formation Services

As a Connecticut-licensed attorney, I offer comprehensive LLC formation and ongoing legal support for Connecticut businesses.

βš–οΈ Real Attorney, Not a Paralegal

When you work with me, you get:

  • Direct access to a Connecticut-licensed attorney (not a paralegal or document mill)
  • Operating agreements drafted by me personally for your specific situation
  • Tax structure analysis and S-corp election guidance
  • Professional LLC compliance assistance
  • Series LLC structuring and strategy

My Connecticut LLC Formation Packages

πŸ“„ DIY Formation Support - $399

  • Step-by-step Connecticut LLC formation guide
  • Name availability check
  • Certificate of Organization template & review
  • Operating Agreement template (single or multi-member)
  • EIN application guidance
  • Connecticut DRS registration checklist
Total $399

⚑ Full-Service Formation - $899

  • Everything in DIY package, plus:
  • I file Certificate of Organization for you (includes $120 state fee)
  • Registered agent service (1 year included, $149/year after)
  • Custom Operating Agreement drafted by me personally
  • EIN obtained on your behalf
  • Connecticut DRS registration assistance
  • Compliance calendar with annual report reminders
Total $899

πŸ† Premium Formation + Tax Planning - $1,699

  • Everything in Full-Service package, plus:
  • 1-hour tax strategy consultation
  • Multi-member equity structure planning
  • S-corp election analysis & Form 2553 filing (if beneficial)
  • Multi-state nexus review
  • Series LLC setup (if applicable)
  • 6 months ongoing advisory support
Total $1,699
πŸ“ž Ready to Get Started?

Reserve attorney time to plan your Connecticut LLC formation, operating agreement, and compliance roadmap.

Book a strategy call β†’

Prefer email? I respond within one business day (Mon–Fri).

  • Email: owner@terms.law