Form an LLC by State › Connecticut
Cheapest and fastest way to file an LLC in Connecticut (2026)
Filing an LLC in Connecticut costs $120 in state fees. The fastest route listed is online expedite, +$50 on top of the filing fee ($170 all in). Mainstay Filing, our best overall pick, files it for you and keeps the registered agent.
- Official sources, checked October 20, 2026
Cheapest vs fastest in Connecticut
| Route | What you get | State cost |
|---|---|---|
| Cheapest | Most online filings automatically accepted | $120 |
| Fast, no extra fee | Online, automatically accepted | $120 |
| Paid lane | Online expedite | $170 |
Paid lanes are the filing fee plus the expedite fee. The yearly report is $80 afterwards.
What the Connecticut Secretary of State says
"Most filings made on Business.CT.gov are automatically accepted, so expedited service is unnecessary." Expedite: "$50 per transaction", "only available for filings submitted online", offered "at the end of the online filing process". No standard turnaround published.
Processing and expedite, read October 1, 2026
Mainstay Filing
$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
What is the cheapest way to file an LLC in Connecticut?
The cheapest route is the plain filing at $120, with the state’s stated turnaround of most online filings automatically accepted.
What is the fastest way to file an LLC in Connecticut?
The fastest route listed is online expedite, +$50 on top of the filing fee ($170 all in).
How much does it cost to expedite a Connecticut LLC?
The state lists 1 option: online expedite (+$50).
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 processing and expedite (Connecticut Secretary of State, official page read): business.ct.gov/knowledge-base/articles/expedited-services, checked October 1, 2026
- Connecticut Secretary of State: portal.ct.gov/sots, checked October 20, 2026