Register your Connecticut LLC Online
Complete the form below in 2–3 minutes. Your LLC and EIN come at no extra cost — you only pay Connecticut’s own $120 state fee.
- Enter your desired LLC name
- Choose your state
- Receive your LLC and free EIN by email
Trusted by Thousands Nationwide
What is an LLC in Connecticut?
An LLC (Limited Liability Company) is a simple structure for running your business under a professional name. It separates your business from your personal name, and it's the most common way to add a partner, sell the business, or look like a real company instead of a side project.
That separation goes further than the name. If the business owes money or gets sued, your house, car, and personal bank accounts are generally off-limits — as long as you run the LLC properly. It doesn't protect you from something you personally did wrong.
A sole proprietorship skips all of that. You're doing business under your own name or a DBA, and everything stays tied to you personally.
A corporation does the same separation as an LLC, but it's built for a different job: issuing stock and bringing in outside investors. An LLC is simpler to run and cheaper to keep up if that's not you right now.
Benefits of an LLC in Connecticut
- Add partners or co-owners whenever you're ready
- Transfer ownership if you sell the business
- “Connecticut Company, LLC” shows you’re a real business
- Shows you’re registered (Connecticut Secretary of the State)
- Get a matching domain like ConnecticutCompanyLLC.com
- Simpler upkeep than forming a corporation
What's different about a Connecticut LLC
Your $120 filing fee is a flat, single payment — Connecticut’s own fee schedule bundles your registered agent designation into that same $120 instead of charging it as a separate line item the way some states do. Standard processing isn’t a guaranteed turnaround, but online filings are typically reviewed in 2–3 business days.
Connecticut has no franchise tax or biennial Business Entity Tax on a standard LLC today — that flat $250 tax was repealed for tax years starting in 2020, so the $80 annual report above is the one recurring state cost every Connecticut LLC owes, regardless of income. Connecticut also doesn't require you to publish a notice in a newspaper, unlike a handful of other states.
Cost to start an LLC in Connecticut
$120 to the Connecticut Secretary of the State — that's it. We don't charge a filing fee on top of it. A Connecticut corporation runs $250 through the same process.
| What you get |  | Others |
|---|---|---|
| EIN (Tax ID) | Free | up to $99 |
| Registered agent | Freefirst year | up to $249per year |
| Name check | Free | usually free |
| Connecticut state filing feespaid to the state — same for everyone | $120 | $120 |
Free EIN with your Connecticut LLC
Your EIN (Employer Identification Number) is what opens a business bank account and identifies your company to the IRS — it's like a Social Security Number for your LLC. It's included at no extra cost, right alongside your LLC.
LLC vs Corporation in Connecticut
An LLC is simpler and more flexible, and keeps “LLC” in your business name. A corporation is a more formal structure built for issuing stock and outside investment, and keeps “Inc” or “Corp” in the name instead. 97% of our clients choose an LLC.
What is a Sole Proprietor in Connecticut?
A sole proprietorship means you're doing business as an individual. You can file a DBA with your town to use a name other than your own. As an individual, you can't add a partner to the business, because everything is tied to your personal name and Social Security Number. If you later want to add partners or sell the business, you'll need to start an LLC or corporation.
File a DBA Under Your LLC
A DBA (Doing Business As), called a Trade Name in Connecticut, lets one LLC operate under more than one business name. In Connecticut, that's filed with the town clerk in the town where the business is principally conducted — not the state office that formed your LLC — for $20, and it expires 5 years after filing unless renewed.
A DBA isn't required if you're fine using your LLC's own name.
Example: Connecticut Company, LLC dba Connecticut Auto Brokers.
DBA vs LLC in Connecticut
A DBA only gives you another name to use. The LLC is the actual business entity that owns the DBA name and holds all legal rights.
Common Questions
Why start an LLC in Connecticut?
It separates the business from your own name, lets you add or remove owners as the business grows, and reads as a real, established company.
How long does it take to get a Connecticut LLC?
Filing takes a few minutes on this page. Connecticut doesn't guarantee a turnaround for standard processing, but online filings are typically reviewed in 2–3 business days, or you can pay $50 extra for 24-hour expedited service.
What's Connecticut's LLC annual report, and what does it cost?
$80, due between January 1 and March 31 every year. It's a state filing requirement, not a tax. Connecticut doesn't publish a separate late fee, but an overdue LLC immediately loses its Certificate of Legal Existence, and more than a year behind, the state can dissolve it by forfeiture.
Do I need an EIN for my Connecticut LLC?
Yes, for a business bank account and for the IRS to recognize your company. It's included free when you file here.
What's a registered agent, and do I need one?
A registered agent is the address Connecticut sends legal mail to. Every LLC needs one, and it's included free for your first year when you file here.
Do I need an operating agreement?
Connecticut doesn't require one to file, but a bank often asks for one to open your business account. You can add it when you file, or write your own later.
Still deciding on a name?
Try the free name generator — type a word you like, get real available options back, then come straight here to file.
Page updates (1)
- January 1, 2025 — Public Act 24-111 modernized Connecticut's trade name process: three defined filer categories, and every trade name now expires 5 years after filing (ones on file before 2025 stay good through December 31, 2029). Connecticut General Statutes, Chapter 620 →
Sources (6)
Every fact on this page was checked directly against Connecticut's own filing agency and statutes — verified September 20, 2026.
- Business.CT.gov — Domestic LLC Forms and Fees — the $120 flat filing fee, bundled registered-agent designation
- Business.CT.gov — Domestic Annual Report Forms and Fees — the $80 LLC / $150 corporation annual report fees
- Connecticut General Statutes, Ch. 613a — Uniform LLC Act — the Jan 1–Mar 31 annual report window, registered agent rule, and dissolution by forfeiture
- Connecticut General Statutes, Ch. 620 — Trade Names — the town clerk filing requirement
- Business.CT.gov — Trade Names — the $20 fee and the 2025 modernization
- Business.CT.gov — Domestic Stock Corporation Fees — the $250 Certificate of Incorporation and $150 annual report