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What Does an LLC Cost in Connecticut?

Connecticut: $120 to form, then $80 a year. That $80 Annual Report is the entire recurring flat total. The two Connecticut taxes that inflate other guides' totals do neither job here: the Business Entity Tax was repealed, and the Pass-Through Entity Tax is elective and income-based, so both sit at $0 in the standard total, explained in full below so neither one surprises you.

By the LLCForming research teamFees checked Nov 8, 2026

Year one: what you pay to exist

Year-one cost in Connecticut	Amount
Certificate of Organization, including registered agent appointment, Secretary of the State	$120
EIN from the IRS	$0
Operating agreement (you write it, not filed)	$0
Registered agent (you or another individual serves)	$0 (appointment included in the $120)
Total state cost, year one	$120

That $120 is the complete required state charge to form, one statutory fee online and on paper, with the agent appointment included and no separate designation fee. There is no publication charge and no initial report in year one. The extras are all optional or conditional: expedited service adds $50 per transaction, online only, with no guaranteed turnaround published; a name reservation is $60 for 120 days if you choose one; and a trade name certificate is $20 to the town clerk, only if the LLC trades under an assumed name. Hiring a commercial registered agent service is a market purchase, separate from state charges, and naming an individual costs nothing.

Every year after: the cost of staying alive

Recurring cost in Connecticut	Amount
Annual Report, due January 1 to March 31	$80
Business Entity Tax	$0. Repealed by Public Act 19-117 for tax periods beginning after December 31, 2018
Pass-Through Entity Tax, if the entity does not elect it	$0. Elective since January 1, 2024; income-based if elected, so excluded from the flat total
Typical recurring total	$80

Eighty dollars a year is the budget, and the deadline matters more than the amount, because Connecticut's sanction is forfeiture, not a fine. No monetary late fee for the Annual Report appears in the fee schedule in section 34-243u, and section 34-247k imposes none. Instead, when an LLC is more than one year in default of filing its annual report, the Secretary of the State may notify it that its rights and powers are prima facie forfeited, and unless it files the report within three months of the mailing of that notice, the Secretary of the State files a certificate of dissolution by forfeiture under section 34-267g. Reinstatement is available at any time after dissolution, except where the Superior Court has entered a dissolution order on the grounds in section 34-267(4) or (5), and it costs $120 under section 34-243u(a)(11), filed with a current-year annual report and an appointment of a registered agent, under section 34-267b. File the $80 report inside the window and none of that machinery ever starts.

What drives the Connecticut total, year one vs. later

Connecticut's total is driven by one filing fee and one report. Year one is the $120 Certificate of Organization, which already includes the registered agent appointment, with nothing else owed to the state that year. Later years are the $80 Annual Report, filed electronically between January 1 and March 31, first due in that window in the calendar year after formation. The total stays that clean because the charges that used to complicate it have ended or changed character. The Business Entity Tax, once $250 every two years in its final historical form, was ended by Public Act 19-117 for tax periods beginning after December 31, 2018, and the Department of Revenue Services says it no longer exists. The Pass-Through Entity Tax is real but different in kind: it is a 6.99 percent tax on Connecticut pass-through income, elective since January 1, 2024, so an LLC that does not elect owes $0 of it, and an LLC that elects pays a percentage of income that cannot be totaled as a flat fee. Both items are kept out of the $80 for stated reasons, not overlooked, and the table below puts each one in its place.

The Connecticut taxes that are not in the standard total, and why

Connecticut cost pages go wrong in two opposite directions: charging a dead tax as if it were alive, and charging an elective income tax as if it were a flat fee. These are the verified figures, each in its stated situation only:

Charge	Figure	Who it applies to
Business Entity Tax	$0	No one, for current periods. Repealed by Public Act 19-117 for any tax period beginning after December 31, 2018. The Department of Revenue Services states the tax no longer exists. The old $250 every two years figure is historical only and must never be added to a current total.
Pass-Through Entity Tax, Form CT-PET	6.99% of Connecticut PE income, if elected	Elective since January 1, 2024, for a pass-through entity doing business in Connecticut or with Connecticut-source income, including an LLC taxed as a partnership. The election is annual and irrevocable, made on a timely filed Form CT-1065/CT-1120SI. Members receive a credit of 87.5% of their share of the tax against their own Connecticut income tax. $0 if not elected.
Composite return, Form CT-1065/CT-1120SI	Filing required, not a flat fee	Mandatory for every pass-through entity doing business in Connecticut or with Connecticut-source income, regardless of amount, whether or not it elects the PE Tax. Do not confuse this filing duty with the elective tax itself.
Expedited service	+$50 per transaction	Optional, online only, offered at the end of the online filing process where available. No guaranteed turnaround time is published, and most online filings are automatically accepted without it.
Name reservation	$60	Optional. Reserves a compliant name for 120 days under section 34-243l.
Trade name certificate	$20	Conditional only, if the LLC trades under an assumed name. Paid to the town clerk, valid five years, under sections 35-1a and 7-34a.

One classification note completes the picture. Under section 34-243v, an LLC is treated for Connecticut tax purposes in accordance with its federal tax classification, so a single-member disregarded LLC is not itself a pass-through entity for the PE Tax definition, and members' Connecticut income tax on pass-through income is an owner-level item, not an LLC flat charge.

Run your own version, with an optional registered agent added, in the LLC cost calculator. Every state's year-one and recurring totals sit in one table on the national cost hub, and if a service would act as your agent, the registered agent price tracker follows what that costs at each tracked provider. If you would rather a service handled the filing, the services comparison prices that honestly, renewals included.