Form a S-Corp in Connecticut

Everything you need to know about forming a S-Corp in Connecticut. Filing fees, requirements, timeline, and step-by-step guidance.

$100
Filing Fee
7-10 business days
Processing Time
$250
Annual Tax
Required
Registered Agent

How to File

1

Choose a Corporate Name

Select an available name ending with 'Corporation,' 'Incorporated,' 'Company,' or 'Limited' or abbreviations. Check availability through Connecticut Secretary of State.

30 minutes

2

Appoint a Registered Agent

Designate a registered agent with a Connecticut address to receive legal documents and state correspondence.

15 minutes

3

Prepare Articles of Incorporation

Complete and file the Certificate of Incorporation with the Connecticut Secretary of State including corporate purpose, stock information, and registered agent details.

45 minutes

4

File Certificate of Incorporation

Submit the completed Certificate of Incorporation with filing fee to the Connecticut Secretary of State online or by mail.

20 minutes

What's Next After Filing

Once your S-Corp is officially formed, you'll want to complete these important steps:

  • Obtain EIN from IRSApply for an Employer Identification Number from the IRS for tax purposes and banking needs.
  • File Form 2553 for S-Corp ElectionSubmit IRS Form 2553 within 75 days of incorporation to elect S-Corporation tax status with all shareholders signing.
  • Create Corporate RecordsAdopt bylaws, issue stock certificates, hold organizational meeting, and maintain corporate records book.

Advantages

  • Pass-through taxation avoiding double taxation
  • Limited liability protection for shareholders
  • Enhanced credibility and professional image
  • Easier to attract investors and obtain business loans

Considerations

  • Strict IRS eligibility requirements and ongoing compliance
  • Limited to 100 shareholders with citizenship restrictions
  • Required annual filings and corporate formalities

Annual Obligations

Franchise Tax:$250
Annual Report Fee:$80
Report Due:March 31
Annual report and franchise tax due by March 31. S-Corps must file federal Form 1120S and Connecticut Form CT-1120S annually.
Last verified: December 2025Source

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