Form Your Connecticut S Corporation
Incorporate in the Constitution State and elect S-corp status to unlock pass-through taxation and payroll-tax savings across the Northeast corridor
Filed in Connecticut
The Constitution State · CT
- State filing fee$250
- Processing time3-5 business days (online)
- Our formation feeFree (you pay $100 if you choose a paid plan)
- Annual report$150/year annual report — due Annually, by end of anniversary month
- State tax rate7.5% corporate income tax
- Expedited option24 hours (+$50)
Form your Connecticut S-Corp — pay only the state filing fee, nothing more.
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Everything to launch your Connecticut S-Corp
Free formation means you pay only the $250 state filing fee. All core services are included at no extra charge.
Certificate of Incorporation filing
We prepare and submit your Certificate of Incorporation to the Connecticut Secretary of State.
Registered agent
Required in Connecticut — we act as your agent for the first year.
EIN from the IRS
Your federal Tax ID — required to open a US business bank account and file taxes.
Corporate bylaws
Professionally drafted corporate bylaws — defines ownership, voting, and profit splits.
Benefits of forming an S-Corp in Connecticut
Connecticut sits in the heart of the Northeast corridor with direct access to the New York and Boston markets, a highly educated workforce, and a deep bench of finance and insurance talent. For S corporations, the state's pass-through treatment pairs well with these advantages, though Connecticut's 7.5% corporate income tax and 6.35% sales tax still apply to the business.
Pass-through taxation avoids the C corporation's entity-level double tax
Self-employment tax savings on profit distributions beyond a reasonable W-2 salary
Strategic Northeast location between New York City and Boston
Highly educated workforce, especially in finance and insurance
Strong financial services and insurance industry hub
Limited liability protection separates personal and business assets
Pass-through profits and losses flow directly onto shareholders' returns
Access to major Northeast markets and transportation corridors
Key features of a Connecticut S-Corp
- S-corp status is an IRS tax election (Form 2553) layered onto a Connecticut corporation
- Pass-through taxation with no federal entity-level double tax
- Payroll-tax savings on distributions above a reasonable salary
- Strategic Northeast location between NYC and Boston
- Strong financial services and insurance industry presence
- Online filing available through the Connecticut Secretary of State
Major industries in Connecticut
Form your Connecticut S-Corp in 6 steps
We handle every step while you stay in the loop. Processing takes 3-5 business days (online).
- 01
Choose Your Corporation Name
Your name must include 'Corporation,' 'Incorporated,' 'Company,' 'Limited,' or an abbreviation. Search the Connecticut Secretary of State's database to confirm availability before filing.
- 02
Appoint a Registered Agent
Connecticut requires a registered agent (statutory agent) with a physical address in the state to receive legal and tax documents on the corporation's behalf.
- 03
File the Certificate of Incorporation
Submit your Certificate of Incorporation to the Connecticut Secretary of State. The filing fee is $250. Online filing typically processes in 3-5 business days. An S corporation is not a separate state filing — you first form a standard corporation.
- 04
Obtain an EIN and Hold the Organizational Meeting
Apply for a free EIN from the IRS, then adopt bylaws, appoint directors, and issue a single class of stock to your shareholders.
- 05
Elect S Corporation Status with Form 2553
File IRS Form 2553 to elect S corporation tax treatment. The election is due within 75 days of formation or by March 15 to apply for the current tax year. All shareholders must sign.
- 06
Set a Reasonable Salary and File the Annual Report
Pay owner-employees a reasonable W-2 salary before taking distributions, and file Connecticut's annual report each year ($150) to stay in good standing.
Connecticut S-Corp costs at a glance
Kicker formation is free — you pay only the required state fees. No hidden charges.
Connecticut S-Corp requirements checklist
Everything you need to form and maintain a Connecticut S-Corp in 2026.
- File the Certificate of Incorporation with the Connecticut Secretary of State ($250)
- Appoint a statutory agent with a physical Connecticut address
- Obtain an EIN from the IRS and adopt corporate bylaws
- File IRS Form 2553 within 75 days of formation (or by March 15) to elect S-corp status
- Limit ownership to no more than 100 shareholders, all US citizens or residents, with one class of stock
- Pay owner-employees a reasonable W-2 salary before taking distributions
- File the Connecticut annual report every year ($150)
Filing information
- Formation document
- Certificate of Incorporation
- Filing agency
- Connecticut Secretary of State
- Registered agent
- Required
- Corporate bylaws
- Recommended
- EIN
- Required
- Name reservation fee
- $60 (120 days)
Free formation — pay only the state fee
Kicker formation is free. You pay the $250 Connecticut state filing fee and nothing more for the Starter plan. Optional plans add registered agent, EIN, corporate bylaws, and compliance.
Starter
- Certificate of Incorporation filing
- Name availability check
- Digital document delivery
- Formation status tracking
Booster
- Everything in Starter
- Registered agent (required in Connecticut)
- EIN / Federal Tax ID
- Expedited processing (1–2 days)
- Corporate bylaws
- Priority support
- Kicker Voice — 3-day free trial
- Kicker Pay — free for 15 days
Founder
- Everything in Booster
- Business mailing address
- Bookkeeping — 3 months free
- Dedicated account manager
- Rush processing
- Kicker Voice — 6-day free trial
- Kicker Pay — free for 30 days
Kicker
- Everything in Founder
- ITIN filing & preparation
- Same-day priority processing
- 2nd year annual filing $0
- Kicker Voice 12-day + Kicker Pay 60 days free
Compare all plans on our pricing page.
Connecticut S-Corp questions, answered
Common questions about forming an S-Corp in Connecticut. Can't find an answer? Talk to our team.
How much does it cost to form an S corporation in Connecticut?
The Connecticut Secretary of State charges $250 to file the Certificate of Incorporation. Electing S-corp status with the IRS via Form 2553 is free. Connecticut's annual report fee is $150 per year.
Is an S corporation a separate filing in Connecticut?
No. You first form a standard corporation by filing the Certificate of Incorporation with the Connecticut Secretary of State, then elect S corporation tax treatment with the IRS using Form 2553. 'S corp' is a federal tax status, not a Connecticut entity type.
How long does it take to form a corporation in Connecticut?
Online filings with the Connecticut Secretary of State typically process in 3-5 business days. Your Form 2553 S-corp election is filed separately with the IRS after the corporation exists.
What is the deadline to file Form 2553 for S corporation status?
File IRS Form 2553 within 75 days of forming your corporation, or by March 15 to have the election apply to the current tax year. All shareholders must sign the form.
Who is eligible to be an S corporation shareholder?
An S corporation can have no more than 100 shareholders, all of whom must be US citizens or residents, and it may issue only one class of stock. Foreign owners are not eligible — those businesses must use a different structure.
How do S corporations save on taxes in Connecticut?
S corporations are pass-through entities, so profits avoid the C corporation's federal double tax. Owners pay themselves a reasonable W-2 salary and take remaining profit as distributions, which are not subject to self-employment payroll tax. Connecticut's 7.5% corporate income tax still applies.
Does Connecticut have a franchise tax for corporations?
Connecticut does not impose an LLC franchise tax, and there is no separate franchise tax for S corporations. The state does levy a 7.5% corporate income tax and a 6.35% sales tax where applicable.
Do I have to file a BOI report for my Connecticut S corporation?
No. Under FinCEN's March 2025 interim final rule, US domestic entities and US persons are exempt from Beneficial Ownership Information reporting. Only foreign-formed entities registered to do business in a US state still file.
Connecticut government filing resources
Filing fees for common S-Corp services
Official Connecticut state charges for the filings you may need after formation — our service fee is separate, and we confirm the current amount before filing.
Fee $60, same across all entity types (stock corp, nonstock corp, LLC, LP, LLP, statutory trust).
$55.00 per document for a certified copy, charged per document regardless of number of pages (statute: $40 for the copy + $15 for the certification/seal).
$40.00 per document for a regular apostille/authentication.
$100 non-refundable registration fee confirmed on the CT DRS Sales and Use Tax Information page.
Learn moreFee $100 to amend the Certificate of Incorporation for a stock (for-profit) corporation.
Learn more$50 filing fee for stock corporations (Form BUS-009 states 'Filing Fee: $50'.
Learn moreStock corporation: $150 reinstatement fee PLUS $150 annual report filing fee = $300 total due on the Combined Certificate of Reinstatement and Annual Report.
Learn moreEverything you need to run your Connecticut S-Corp
Formation is the first step — stay compliant and operational with these services.
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Ready to form your Connecticut S-Corp?
Formation is free — you pay only the $250 Connecticut state filing fee. Personal-asset protection, pass-through taxation, and a complete document package, filed in 3-5 business days (online).
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