Business formation

Form your business in Connecticut

Start your LLC, S-Corp, C-Corp, or Nonprofit in Connecticut with a guided, step-by-step workflow tailored to your entity type - and know the state filing fee before you begin.

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Forming an LLC in Connecticut costs $120 in state filing fees, which is above the national median: 31 of the 51 U.S. jurisdictions charge less, and the national median is $100. A corporation files for $250 and a nonprofit for $50. Below: the fee table, what else you pay in year one, and the questions founders ask before filing here.

Connecticut state filing fees

These are the one-time fees paid to the Connecticut Secretary of State to file your formation document. They are separate from any EazeAccounts service or package fee.

Entity type	State filing fee
LLCArticles of Organization - flexible, pass-through, simple to run.	$120
Corporation (C-Corp / S-Corp)Articles of Incorporation - shares, board, officers. S-Corp is a federal tax election on the same state filing.	$250
NonprofitNonprofit Articles of Incorporation - mission-driven; optional 501(c)(3).	$50

Estimated state filing fees, separate from EazeAccounts service fees. Some states set a minimum that can rise with authorized shares, and expedited or online filing may differ. Fees last verified May 2026; confirm the current amount with the Connecticut Secretary of State before filing.

What an LLC costs every year in Connecticut

Annual Report

$80

Between January 1 and March 31 each year, starting the year after the LLC is formed The report must be filed online. An LLC more than a year behind can be dissolved by forfeiture if it does not file within three months of an email notice.

State tax on the LLC

Connecticut no longer charges the $250 business entity tax; it ended for tax periods beginning after December 31, 2018. An LLC taxed as a partnership files Form CT-1065/CT-1120SI with the Department of Revenue Services by March 15 each year whatever its income, and pays entity-level tax only if it elects the pass-through entity tax (optional since 2024, 6.99 percent). Registering for a sales and use tax permit costs $100.

How long Connecticut takes

Many online filings through Business.CT.gov are accepted automatically. Mailed paper filings are the slowest, and the state does not publish a standard processing time. Expedited service costs $50 per transaction and is available only for online filings.

What is different about Connecticut

• The annual report must give the residence address of at least one member or manager, unless the state accepts a business address for good cause.
• Since January 2025, notices that an LLC faces dissolution for missed reports go by email only, so the email address on file matters.
• A dissolved LLC can be reinstated at any time by filing a $120 certificate of reinstatement with a current annual report and paying any penalties.

Guide reviewed October 2026 against the Connecticut Secretary of State and the tax authority. Confirm current figures before filing.

What else you pay in year one

Registered agent. Free if you serve as your own agent at a Connecticut street address; a service charges an annual fee if you would rather keep your address off the public record.
EIN. Free from the IRS. Anyone charging for an EIN alone is charging for the form.
Annual report or franchise tax. Most states ask for a yearly report and some charge a fee or tax with it; the amount and deadline are set by Connecticut. Check the Secretary of State page before you file so the first renewal is not a surprise.
Licences and permits. City and county rules depend on what the business does, not on the entity type.

Not sure whether an LLC or a corporation fits? The entity cost calculator compares the two over three years, and the guide to LLC vs C-Corp covers the tax and investor side.

Questions founders ask about Connecticut

How much does an LLC cost per year in Connecticut?: $80 for the annual report, due between January 1 and March 31. There is no annual entity tax unless the LLC elects the pass-through entity tax.
How much does it cost to form an LLC in Connecticut?: $120 for the Certificate of Organization, online or by mail. Expedited service adds $50 and is available only online.
Does Connecticut still charge the $250 business entity tax?: No. The business entity tax ended for tax periods beginning after December 31, 2018. The recurring state charge for an LLC is now the $80 annual report.
How much does it cost to start an LLC in Connecticut?: The Connecticut state filing fee for an LLC is $120, paid once when you file the formation document. That is above the national median: 31 of 51 jurisdictions charge less, and the national median is $100. Registered agent service, expedited processing and any EazeAccounts package are separate.
Do I need a registered agent in Connecticut?: Yes. Every state requires an LLC or corporation to name a registered agent with a physical street address in Connecticut who is available during business hours to receive legal and official mail. You can be your own agent if you live in the state, or use a service.
What is the difference between the state fee and the EazeAccounts fee?: The state fee goes to the Connecticut Secretary of State and is the same whoever files for you. The EazeAccounts formation package covers preparing and filing the documents, the EIN, the operating agreement or bylaws, and setting your books up from day one. You always see both amounts before you pay.
Is the state filing fee refundable if my filing is rejected?: Generally no. States keep the fee even when a filing is rejected for a name conflict or a missing detail, which is why the name check and document review happen before anything is submitted.

Next step

Start your Connecticut formation What the formation service includes See the books set up live

Comparing states? California, Colorado, Delaware, Florida, or see filing fees in every state.

Ready to form in Connecticut? Begin the step-by-step formation workflow.

Connecticut state filing fees

These are the one-time fees paid to the Connecticut Secretary of State to file your formation document. They are separate from any EazeAccounts service or package fee.

Entity type	State filing fee
LLCArticles of Organization - flexible, pass-through, simple to run.	$120
Corporation (C-Corp / S-Corp)Articles of Incorporation - shares, board, officers. S-Corp is a federal tax election on the same state filing.	$250
NonprofitNonprofit Articles of Incorporation - mission-driven; optional 501(c)(3).	$50

What an LLC costs every year in Connecticut

Annual Report

$80

State tax on the LLC

How long Connecticut takes

What is different about Connecticut

• The annual report must give the residence address of at least one member or manager, unless the state accepts a business address for good cause.

• Since January 2025, notices that an LLC faces dissolution for missed reports go by email only, so the email address on file matters.

• A dissolved LLC can be reinstated at any time by filing a $120 certificate of reinstatement with a current annual report and paying any penalties.

Guide reviewed October 2026 against the Connecticut Secretary of State and the tax authority. Confirm current figures before filing.

What else you pay in year one

Registered agent. Free if you serve as your own agent at a Connecticut street address; a service charges an annual fee if you would rather keep your address off the public record.

EIN. Free from the IRS. Anyone charging for an EIN alone is charging for the form.

Annual report or franchise tax. Most states ask for a yearly report and some charge a fee or tax with it; the amount and deadline are set by Connecticut. Check the Secretary of State page before you file so the first renewal is not a surprise.

Licences and permits. City and county rules depend on what the business does, not on the entity type.

Not sure whether an LLC or a corporation fits? The entity cost calculator compares the two over three years, and the guide to LLC vs C-Corp covers the tax and investor side.

Questions founders ask about Connecticut

How much does an LLC cost per year in Connecticut?

$80 for the annual report, due between January 1 and March 31. There is no annual entity tax unless the LLC elects the pass-through entity tax.

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

$120 for the Certificate of Organization, online or by mail. Expedited service adds $50 and is available only online.

Does Connecticut still charge the $250 business entity tax?

No. The business entity tax ended for tax periods beginning after December 31, 2018. The recurring state charge for an LLC is now the $80 annual report.

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

The Connecticut state filing fee for an LLC is $120, paid once when you file the formation document. That is above the national median: 31 of 51 jurisdictions charge less, and the national median is $100. Registered agent service, expedited processing and any EazeAccounts package are separate.

Do I need a registered agent in Connecticut?

Yes. Every state requires an LLC or corporation to name a registered agent with a physical street address in Connecticut who is available during business hours to receive legal and official mail. You can be your own agent if you live in the state, or use a service.

What is the difference between the state fee and the EazeAccounts fee?

The state fee goes to the Connecticut Secretary of State and is the same whoever files for you. The EazeAccounts formation package covers preparing and filing the documents, the EIN, the operating agreement or bylaws, and setting your books up from day one. You always see both amounts before you pay.

Is the state filing fee refundable if my filing is rejected?

Generally no. States keep the fee even when a filing is rejected for a name conflict or a missing detail, which is why the name check and document review happen before anything is submitted.