LLC Formation Compared › Connecticut
LLC formation services compared in Connecticut (2026)
The Connecticut filing fee is $120. With a registered agent, Mainstay Filing (our best overall pick) comes to $319 in year 1; the other four services range from $120 to $369.
- Official sources, checked October 20, 2026
- Prices verified October 2026
Year-1 cost of each service in Connecticut
| Service | First-year price (with agent) | Year-1 total |
|---|---|---|
| Bizee | $0 Basic package, agent free the first year | $120 |
| Northwest Registered Agent | $39 package, agent included the first year | $159 |
| ZenBusiness | $0 Starter package plus $99 agent | $219 |
| Mainstay Filing | Included | $319 |
| LegalZoom | $0 Basic package plus $249 agent | $369 |
Connecticut filing details
- State filing fee
- $120
- Formation document
- Certificate of Organization
- Filed with
- Connecticut Secretary of State
- Yearly state report
- Annual Report, every year: $80
- Registered agent
- Required. A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment.
Mainstay Filing
$199 + $120 state fee = $319 in year 1
- LLC formation, prepared and filed
- Registered agent, all year
- EIN application (with an SSN or ITIN)
- Annual report filed every year it is due where the state requires one
- Compliance reminders and stored documents
Price from the Mainstay Filing pricing and FAQ pages, checked October 21, 2026. State fees are passed through at cost and shown before you pay.
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Connecticut questions
How much does it cost to form an LLC in Connecticut with a service?
In year 1, from $120 (Bizee) to $369 (LegalZoom), with a registered agent and Connecticut’s $120 filing fee included. Mainstay Filing is $319.
What does Connecticut charge to file an LLC?
$120, paid to the Connecticut Secretary of State for the Certificate of Organization. Every service on this page adds that fee on top of its own price.
Do I need a registered agent for a Connecticut LLC?
Yes. A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment.
Is the cheapest first year the cheapest LLC?
Not always. Bizee is lowest in year 1, but the agent price changes after the first year for Bizee, Northwest Registered Agent and ZenBusiness, while Mainstay Filing stays at $199.
Sources
- Conn. Gen. Stat. § 34-247 (Formation of limited liability company; certificate of organization); fee set by § 34-243u(a)(3) (multira state research spine): www.cga.ct.gov/current/pub/chap_613a.htm, checked August 12, 2026
- Connecticut formation fee: Filing fee, official source read 2026-10-01: business.ct.gov/knowledge-base/articles/domestic-limited-liability-companies-forms-and-fees, checked October 1, 2026
- Connecticut formation fee: Filing fee, official source read 2026-10-01: business.ct.gov/-/media/businessonestop/fee-schedule-revised-712020.pdf, checked October 1, 2026
- Connecticut Secretary of the State, Business Services Division (multira state research spine): business.ct.gov/business-services/file-annual-report, checked August 12, 2026
- Connecticut Secretary of the State, Business Services Division (multira state research spine): business.ct.gov/knowledge-base/articles/annual-report/file-an-annual-report, checked August 12, 2026
- Connecticut yearly filing: Annual report: fee, official source read 2026-10-01: business.ct.gov/knowledge-base/articles/domestic-annual-report-forms-and-fees, checked October 1, 2026
Provider prices: each company’s own pages, checked October 2026 (see sources and method).