LLC Startup Cost › Connecticut
Connecticut LLC startup cost (2026)
Starting a Connecticut LLC costs $120 to file. With Mainstay Filing, our best overall pick, the first-year total is $319, with the agent, EIN application and report filing included. The first report later costs $80.
- Official sources, checked October 20, 2026
Connecticut budget, line by line
| Line | What it is | Cost |
|---|---|---|
| State filing fee | Certificate of Organization, Connecticut Secretary of State | $120 |
| Registered agent | Required; the company cannot be its own agent | $149 with Mainstay Filing |
| EIN | Issued by the IRS online | $0 |
| State total | Filing fee plus quantified extras | $120 |
| With Mainstay Filing | State total plus the first-year price (agent, EIN application, report filing) | $319 |
Mainstay Filing
Our rating: 4.9 out of 5
$199 / year, same at renewal
- 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.
Questions
How much does it cost to start an LLC in Connecticut?
The state filing fee is $120. With Mainstay Filing, our best overall pick, the first-year total is $319.
Does Connecticut charge anything besides the filing fee?
Not in the sources we checked. The first Annual Report is a later cost: $80.
Can I be my own registered agent in Connecticut?
A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment.
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
- Connecticut Secretary of State: portal.ct.gov/sots, checked October 20, 2026
- IRS: Get an employer identification number: www.irs.gov/businesses/small-businesses-self-employed/get-an-employer-identification-number, checked October 21, 2026