How to Start an LLC in Connecticut
Form your Connecticut LLC online with transparent pricing, registered agent service and real human support. Incofile prepares and files your Certificate of Organization for you.
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Connecticut LLC filing fee & timeline
To form an LLC in Connecticut you file your Certificate of Organization with the state and pay the state filing fee of $120. Incofile adds a flat, one-time service fee on top — no monthly charges — and your total is always shown before you pay.
Most Connecticut LLC filings are prepared and submitted within one business day. State approval time depends on Connecticut's current processing queue, typically ranging from a few business days to a few weeks, with expedited options available in many states.
Why form an LLC in Connecticut
In Connecticut you file a Certificate of Organization online for $120, and most filings are accepted automatically. Every year the LLC files an $80 annual report between January 1 and March 31. Owners pay graduated state income tax from 2% to 6.99%.
Connecticut LLC at a glance
| State filing fee | $120 |
|---|---|
| Document filed | Certificate of Organization |
| Standard approval time | Most online filings are accepted automatically |
| Expedited service | +$50 (online only) |
| Annual report | $80 a year, filed online between January 1 and March 31 |
| State income tax | Graduated rates from 2% to 6.99% |
| Registered agent | Required; a Connecticut resident or a business registered in Connecticut |
State figures checked against the Connecticut Secretary of the State, Business Services Division, September 2026. State fees are set by Connecticut and can change; the exact total is shown before you pay.
How much does it cost to start an LLC in Connecticut?
| Cost | Amount | When |
|---|---|---|
| Certificate of Organization (state filing fee) | $120 | Required, one time |
| Registered agent | $0 if you act as your own agent at a Connecticut street address; otherwise a registered agent service | Required, ongoing |
| Annual report | $80 per year | Required every year, 1 January – 31 March |
| EIN from the IRS | Free from the IRS | Needed for a bank account and taxes |
| Expedited processing | +$50 (online only) | Optional |
These are state, IRS and other outside costs — not Incofile fees. Your Incofile package price is shown separately at checkout, and your full total is always shown before you pay. Estimate every cost for your state with our LLC cost calculator.
How to form an LLC in Connecticut — 4 steps
Choose your package
Pick the Incofile package that fits your goals. Your Connecticut state filing fee is shown before you pay.
Tell us about your LLC
Complete our short form with your company name, address and ownership details — about ten minutes.
We check & file with Connecticut
We confirm your name is available and file your Certificate of Organization with the Connecticut state office.
Get your documents
Your approved Connecticut LLC documents land in your dashboard, with reminders for your annual report and other deadlines.
How to start an LLC in Connecticut: step by step
Here is exactly what forming a Connecticut LLC involves, whether you file it yourself or let Incofile handle the paperwork.
Choose and check your LLC name
Pick a name that includes “LLC” or “Limited Liability Company” and is distinguishable from existing Connecticut businesses. Check it with our free business name search.
Appoint a registered agent
Name a registered agent with a physical street address in Connecticut (not a PO box) who can accept legal papers during business hours. If you live outside Connecticut or want privacy, Incofile can act as your agent.
File the Certificate of Organization
File online through business.ct.gov with the Connecticut Secretary of the State and pay $120. Most online filings are accepted automatically.
Create an operating agreement
Connecticut does not require you to file an operating agreement, but it records who owns the LLC, how profits are shared and how decisions are made. Banks commonly ask for it, and it helps protect your limited liability.
Get an EIN
Apply to the IRS for your Employer Identification Number (EIN). You need it to open a business bank account, hire staff and file federal taxes. The IRS issues it free; non-US owners without an SSN apply by phone, fax or mail, and our Gold package handles it for you.
Register for taxes and local licenses
Register with the Department of Revenue Services through myconneCT for sales tax and withholding if needed, and check your town for local licenses.
File your annual report each year
File the $80 annual report online between 1 January and 31 March every year.
Connecticut LLC filing requirements: what you need
- A business name that is available and meets Connecticut's naming rules (it must include “LLC” or “Limited Liability Company”).
- A registered agent with a physical address in Connecticut — Incofile can be your agent.
- Certificate of Organization filed with the Connecticut state office — we prepare and submit these for you.
- An operating agreement and EIN to open a business bank account (included in our Gold and Platinum packages).
- Ongoing compliance — Connecticut's reports, taxes and registered agent rules (see below). We track the deadlines and remind you.
Operating agreement
An operating agreement sets out who owns the LLC, how profits are split, how decisions are made and what happens if a member leaves. Connecticut does not ask you to file it with the state, but banks usually want to see it, and without one the state's default rules apply. Incofile includes a customised operating agreement in the Gold and Platinum packages.
EIN (Employer Identification Number)
Your EIN is the federal tax ID for your LLC. You need it to open a business bank account, hire staff and file taxes. The IRS issues it free — online in minutes if you have a Social Security number, or by fax or mail (one to eight weeks) if you don't. Our Gold and Platinum packages include it, and it is also available as a separate service.
This is general information, not legal advice. If you're unsure which structure is right, compare LLC vs S-Corp vs C-Corp.
Connecticut LLC naming rules
The name must contain "Limited Liability Company", "LLC", "L.L.C.", "Limited Liability Co." or "Ltd. Liability Company" and must be distinguishable from every entity on the Connecticut register. Check availability with our free business name search.
Keeping your Connecticut LLC compliant
Annual report
Every Connecticut LLC files an annual report online with the Secretary of the State each year, between January 1 and March 31. The fee is $80. While a report is overdue the state will not issue a Certificate of Legal Existence, and a long-overdue LLC can be administratively dissolved.
Registered agent
Connecticut requires a registered agent who is either a Connecticut resident or a business entity registered in Connecticut; the LLC cannot be its own agent. Professional agents such as Incofile qualify.
Taxes
Owners pay Connecticut income tax on their share of profit at graduated rates from 2% up to 6.99%. Sellers of taxable goods register for sales tax with the Department of Revenue Services.
Licenses
Connecticut has no general state business license, but many trades and professions need a state license, and some towns require local permits.
Incofile clients get every Connecticut deadline tracked in their dashboard with email reminders — see registered agent service.
Official Connecticut resources
Connecticut LLC — frequently asked questions
How much does it cost to start an LLC in Connecticut?
Incofile charges a flat, one-time formation fee (Silver, Gold or Platinum) plus the Connecticut state filing fee of $120. There are no monthly charges, and the total is shown before you pay.
How long does it take to form an LLC in Connecticut?
We prepare and submit your Connecticut Certificate of Organization within one business day. State approval times vary from a few business days to a few weeks; expedited filing is available in many states.
Do I need a registered agent in Connecticut?
Yes. Connecticut requires every LLC to have a registered agent with a physical address in the state to receive legal and state mail. Incofile can serve as your Connecticut registered agent so you stay compliant and keep your address private.
Can I start an LLC in Connecticut if I live in another state or country?
Yes. You do not need to live in Connecticut to form an LLC there. Incofile can act as your registered agent and provide a business address, so you can form and run your Connecticut LLC from anywhere.
How much does it cost to form an LLC in Connecticut?
The state fee for the Certificate of Organization is $120, or $170 with expedited service. After that, the annual report costs $80 each year.
When is the Connecticut annual report due?
Each year between January 1 and March 31, filed online. The fee is $80.
Can I be my own registered agent in Connecticut?
A Connecticut resident, including a member, can act as registered agent. The LLC itself cannot. Owners who live outside the state use a professional agent.
What is the Connecticut income tax rate?
Connecticut uses graduated rates from 2% up to 6.99%, applied to owners' share of profit.
How much does a Connecticut LLC cost per year?
The state annual report is $80, filed between 1 January and 31 March. Add a registered agent service if you use one.
Ready to launch your Connecticut LLC?
Most orders are prepared and submitted within one business day.
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