LLC Formation Cost in Connecticut (2026): Full Fee Breakdown

LLC Formation in Connecticut typically costs $325, with real-world totals ranging from $120 to $1,950 once 3 mandatory fees are included.

Updated September 4, 2026 · Typical turnaround 1 day · Estimates in USD

Low

$120

File yourself directly with the state; act as your own registered agent.

Average · typical

$325

Most people pay close to this once mandatory add-ons are included.

High

$1,950

Attorney-prepared filing, fastest expedite, commercial agent, drafted operating agreement, first-year recurring fees.

Estimate your out-of-pocket total

Pick your option and toggle the add-ons that apply to you.

Option

Add-on fees

State filing fee (Articles of Organization) Mandatory Paid once to the Connecticut Secretary of State (portal.ct.gov/sots). $120
Annual report (first year) Mandatory Recurring state filing to keep the LLC in good standing. $80
Registered agent service (annual) Optional Legally required role, but you can serve as your own agent for free if you have an in-state street address. $125
Operating agreement (template or attorney) Optional Not filed with the state, but banks and courts expect one. $99
EIN from the IRS Mandatory Free at irs.gov; third parties charge $50–$100 for the same form. $0

Why the llc formation price varies so much

The headline "Connecticut LLC filing fee" is only the first line of the real cost. Between the state fee, registered-agent service, expedite tiers, and the recurring fees that come due in year one, a Connecticut LLC realistically costs between $120 and $1,950 to launch. The tables below itemize each fee, flag which ones are mandatory, and let you total up your own formation budget.

What drives the number in Connecticut

Connecticut raised the LLC annual report fee from $20 to $80 in 2020; it is due by March 31. Official fee schedule: portal.ct.gov/sots.

LLC Formation price by option

Base price for each tier before the add-on fees listed below.

Option / tier	Price (USD)	vs. average
DIY filing (state fee only)	$120	-63%
Budget formation service	$170	-48%
Full-service formation (EIN + operating agreement)	$320	-2%
Attorney-prepared formation	$1,020	+214%
Expedited processing — 24-hour	$50	-85%

Hidden fees and surcharges

Mandatory line items add about $200 on top of the base price. Optional items only apply if you use them.

Line item	Status	Typical cost	Why it exists
State filing fee (Articles of Organization)	Mandatory	$120	Paid once to the Connecticut Secretary of State (portal.ct.gov/sots).
Annual report (first year)	Mandatory	$80	Recurring state filing to keep the LLC in good standing.
EIN from the IRS	Mandatory	$0	Free at irs.gov; third parties charge $50–$100 for the same form.
Registered agent service (annual)	Optional	$125	Legally required role, but you can serve as your own agent for free if you have an in-state street address.
Operating agreement (template or attorney)	Optional	$99	Not filed with the state, but banks and courts expect one.
Mandatory add-ons total		$200

How to use this estimate

Budget the mandatory column first: it is the amount you cannot avoid in year one. Everything in the optional column is a choice — you can be your own registered agent and draft your own operating agreement.
Only pay for expedited processing if a bank account or contract deadline depends on it; standard online filings are usually processed within days.
Put the recurring deadline on your calendar the day you file. Late penalties and loss of good standing cost more than the recurring fee itself.

LLC Formation in Connecticut: questions people ask

How much does it cost to form an LLC in Connecticut?

The Connecticut state filing fee is $120. A realistic first-year total including a registered agent and the first recurring filing is about $325; using an attorney and the fastest expedite pushes it toward $1,950.

What are the annual fees for a Connecticut LLC?

Each year a Connecticut LLC pays $80 for the annual report — $80 in total before any registered agent fee. Connecticut raised the LLC annual report fee from $20 to $80 in 2020; it is due by March 31.

Can I expedite LLC formation in Connecticut?

Yes. Connecticut offers 24-hour processing for $50 on top of the $120 filing fee. Standard online filings are usually processed in a few business days.

Do I need a registered agent for a Connecticut LLC?

Yes, every Connecticut LLC must list a registered agent with a physical in-state address. You can act as your own agent at no cost, or hire a commercial service for $49–$299 per year (about $125 is typical).

What happens if I miss the Connecticut annual report deadline?

Connecticut does not publish a fixed late fee, but missing the filing puts the LLC out of good standing and can trigger administrative dissolution; reinstatement requires back filings and extra fees.

Is Connecticut an expensive state to form an LLC in?

Connecticut's $120 filing fee compares with a national low of $35 (Montana) and highs of $500 (Massachusetts). Counting recurring costs, Connecticut owes $80 per year to the state, versus $800+ in California and $0 in states like Missouri and New Mexico.