--- title: "Connecticut LLC Formation: Fees, Steps & Filing Guide 2026 | LLC Attorney" description: "Connecticut LLC formation costs $120 (Certificate of Organization), requires an $80 Annual Report, and has a top income tax rate of 6.99%. Full guide, cost table, and professional filing from $49." canonical: https://llcattorney.com/states/ct/llc-formation-connecticut image: https://llcattorney.com/images/share-cover.png source_path: /states/ct/llc-formation-connecticut --- Key Takeaways - $120 Certificate of Organization filing fee (Form Online (ct.gov/sots)), paid to the Connecticut Secretary of State - Connecticut graduated income tax up to 6.99%; no franchise tax; $80 Annual Report due between January 1 and March 31 - Annual Report (Online (ct.gov/sots)) due within Between January 1 and March 31 each year of formation, $80 fee; $50 late fee; dissolution if delinquent late penalty - Operating agreement not legally required in Connecticut, but strongly recommended for banking and member protection - Must designate a Connecticut registered agent with a physical Connecticut street address - No publication requirement - Same-day filing available through LLC Attorney at no markup on state fees Connecticut is a moderate-cost state for LLC formation — $120 Certificate of Organization fee, 3–5 business day online processing, and an $80 Annual Report due each year between January 1 and March 31. Connecticut's income tax is graduated up to 6.99%, and the state offers a Pass-Through Entity Tax (PTET) election that may benefit LLC members with significant income. This guide covers every step and cost for forming an LLC in Connecticut, with professional formation from $49. $120Certificate of Organization filing fee $80Annual Report fee 6.99%Top income tax rate $49LLC Attorney formation starting price ## Who Should Form an LLC in Connecticut? Connecticut's economy is driven by financial services, insurance, healthcare, manufacturing, and a large professional services sector. An LLC is the right structure for consultants, small business owners, real estate investors, and professionals who need personal liability protection and straightforward pass-through tax treatment. Connecticut's graduated income tax (2–6.99%) applies to LLC pass-through income reported on members' individual Connecticut returns. The Pass-Through Entity Tax (PTET) election at 6.99% is a tax planning tool available to multi-member LLCs that allows entity-level tax payments, potentially enabling members to deduct state taxes beyond the federal SALT cap. Consult a tax professional to evaluate this option. Connecticut's dense business environment — particularly in Fairfield County and the Hartford metro area — creates an active market for LLC formation in financial services, consulting, and professional services. The LLC structure provides essential liability protection in these high-stakes business environments. ## When Are You Required to Form an LLC in Connecticut? You should form a Connecticut LLC before signing client contracts, hiring employees, or opening a business bank account. Operating without an LLC in Connecticut means personal assets are exposed to every business liability. Connecticut's professional services sector carries significant exposure to malpractice and contract claims that the LLC structure helps shield. Connecticut requires your LLC to be in good standing with the Secretary of State before renewing business licenses or qualifying as a foreign LLC in other states. Maintaining annual compliance — paying the $80 Annual Report between January 1 and March 31 — is essential for preserving good standing. ## What's Unique About Connecticut LLCs? Connecticut's LLC Annual Report is due on a fixed statewide schedule — every year between January 1 and March 31, regardless of when you formed. The same deadline applies to every Connecticut LLC, so setting a Q1 reminder is essential to avoid the $50 late fee. Connecticut offers a 24-hour expedited processing option for an additional $50 — the total becomes $170. This is useful for time-sensitive formations but is not typically necessary for most LLC founders. Standard online processing takes 3–5 business days. Connecticut's Pass-Through Entity Tax (PTET) is an optional election that allows the LLC itself to pay state income tax at 6.99%, with members receiving a corresponding credit. This can be beneficial for members whose federal SALT deductions are capped. The PTET election is not automatic — it must be affirmatively elected and administered carefully. Key facts: - Connecticut income tax is graduated 2–6.99%; Connecticut LLC owners can elect the Pass-Through Entity Tax (PTET) at 6.99% for potential federal SALT deduction benefits - Annual Report filed annually - Annual Report $80 due between January 1 and March 31 - Pass-through entity tax (PTET) option available — consult a tax professional about the CT PTET election ## Selecting a Name for Your Connecticut LLC Your Connecticut LLC name must be distinguishable from all existing entities in the Secretary of State database. It must include 'Limited Liability Company,' 'LLC,' or 'L.L.C.' Search at ct.gov/sots before filing. You can reserve a name online for $60 (120-day hold) to secure it while preparing your Certificate of Organization. If you operate under a name different from your LLC's legal name, Connecticut Trade Names are registered with the Secretary of State at the state level for $30. This is a simpler process than states requiring county-level DBA filings. ## When Should You Consult an Attorney for Your Connecticut LLC? You don't typically need a lawyer for a simple, single-member Connecticut LLC. But professional advice is essential if you have multiple owners, complex ownership percentages, high-liability risks, intellectual property, or are seeking outside funding. A lawyer makes sure your operating agreement fully protects your interests from day one. It is highly recommended to seek professional counsel in the following scenarios: - **Multiple members or investors:** You need a customized operating agreement to outline ownership stakes, voting rights, dispute resolution, and exit strategies. Off-the-shelf templates rarely cover these contingencies. - **High-risk industries:** If your business faces significant liability exposure (manufacturing, construction, consulting), an attorney helps ensure the corporate veil is not pierced. - **Complex assets and IP:** If your business will own patents, trademarks, or real estate, a lawyer ensures these assets are properly transferred and protected under the LLC. - **Raising capital or adding partners:** If you plan to seek venture capital or issue equity to employees, you may need a different business structure entirely, such as a C-Corporation. - **State and local requirements:** Connecticut's graduated income tax and pass-through entity tax election create planning opportunities for LLC members. An attorney familiar with Connecticut business law can help structure your LLC for optimal compliance. Unlike formation-only services, LLC Attorney gives you on-demand access to licensed attorneys: flat-fee consultations in 30-minute increments, no retainer. You can talk to a licensed attorney about Connecticut's specific requirements before and after you file. ## Designating a Registered Agent Every Connecticut LLC must have a registered agent with a physical Connecticut street address. The registered agent receives service of process and official state correspondence during business hours. P.O. boxes are not acceptable as registered agent addresses in Connecticut. A professional registered agent keeps your personal address off the publicly searchable ct.gov/sots database. If your registered agent becomes unavailable without updating the SOS, Connecticut may administratively dissolve your LLC. LLC Attorney provides Connecticut registered agent service as part of its formation package. If the state is unable to deliver legal notices to your registered agent, Connecticut can administratively dissolve your LLC without additional warning. ## Filing the Necessary Formation Documents To form a Connecticut LLC, file a Certificate of Organization with the Connecticut Secretary of State online at ct.gov/sots. The filing fee is $120. Standard online filings process in 3–5 business days; expedited 24-hour processing is available for an additional $50. Your Certificate must include the LLC's name, registered agent name and Connecticut address, and the organizer's signature. After approval, the Secretary of State issues a Certificate of Organization. Save this document — you will need it to open a business bank account and for most business license applications. If your LLC will sell taxable goods or services, register for Connecticut sales and use tax with the Department of Revenue Services. ## Member-Managed vs. Manager-Managed: What to Choose When you file Form Online (ct.gov/sots), you must choose a management structure. This decision cannot be left blank. **Member-managed** means all LLC owners share authority over day-to-day decisions. Every member can sign contracts, open accounts, and act on behalf of the company. This is the right choice for small teams where all owners are actively involved in running the business. **Manager-managed** means one or more designated managers run the company's operations. Managers can be members or outside appointees. This structure works best when your LLC has passive investors, when operational roles differ significantly between members, or when you want to limit decision-making authority to a smaller group. Your management structure is declared on Form Online (ct.gov/sots) and can be modified later through your operating agreement. If you are the only member and you will run the business yourself, choose member-managed. If you have investors who are not involved in operations, choose manager-managed. ## Filing an Initial Annual Report Connecticut LLCs do not have a separate initial filing after formation. Your first Annual Report is due in the January 1 to March 31 window of the year following formation. The Annual Report fee is $80, filed online at ct.gov/sots. Missing the March 31 deadline triggers a $50 automatic late fee. If the Annual Report remains unfiled, Connecticut will administratively dissolve the LLC. Set a calendar reminder for the first quarter of each year. ## Your Connecticut LLC Operating Agreement (Strongly Recommended) Your operating agreement does not need to be filed with the Connecticut Secretary of State. Keep it with your company records and give a copy to every member. A complete operating agreement covers: member rights and responsibilities, ownership percentages, profit and loss distribution, management structure, voting procedures, and dissolution rules. Connecticut permits written or oral operating agreements, but a written agreement is essential for banking, establishing member authority, and protecting the LLC's liability shield in Connecticut courts. A generic national template may not account for Connecticut's specific default rules on member management and profit allocation under the Connecticut Uniform Limited Liability Company Act (Conn. Gen. Stat. § 34-255a). Connecticut courts apply default statutory rules when no operating agreement governs a dispute. LLC Attorney drafts operating agreements tailored to Connecticut's requirements. ## Obtaining an EIN and Setting Up a Business Bank Account An EIN from the IRS is required for Connecticut LLCs with more than one member, for LLCs that hire employees, and for opening a business bank account. Apply free at irs.gov/ein. The IRS online application processes immediately, Monday–Friday, 7 a.m.–10 p.m. Eastern. Open a dedicated Connecticut business bank account as soon as your EIN is issued. Bring your Certificate of Organization, EIN confirmation letter, and operating agreement to the bank. Keeping business and personal finances separate is essential to preserving the LLC's liability protection. ## Registering for Connecticut State Taxes and Business Licenses Your federal EIN does not automatically register you with Connecticut state agencies. Depending on your business type, you may need to register for: - Connecticut sales and use tax (CT Department of Revenue Services, if you sell taxable goods or services in Connecticut) — [portal.ct.gov/drs](https://portal.ct.gov/drs) - Connecticut employer payroll taxes (CT Department of Labor, if you are hiring Connecticut employees) — [ctdol.state.ct.us](https://ctdol.state.ct.us) - Connecticut sales and use tax registration (if selling taxable goods or services in Connecticut) Failure to register when required results in back taxes, penalties, and interest. ### What to Do After Forming Your Connecticut LLC After forming your Connecticut LLC, your ongoing compliance obligations are straightforward: - Annual Report: $80 due between January 1 and March 31 at ct.gov/sots — $50 late fee if missed - Connecticut income tax: graduated 2–6.99% on LLC pass-through income - Consider the Connecticut PTET election for potential federal SALT deduction benefits — consult a tax professional - Sales tax registration: required if selling taxable goods or services in Connecticut ### Cost to Start an LLC in Connecticut Connecticut LLC formation and compliance costs are moderate. The table below covers all state fees you are likely to encounter: Fee Amount Notes Certificate of Organization (Form Online (ct.gov/sots)) $120 Standard processing: Online: 3–5 business days; mail: 3–4 weeks; verify at Connecticut Secretary of State for current times State expedited — 24 hour +$50 Additional to $120 base fee; total: $170 Annual Report (Online (ct.gov/sots)) $80 Due within Between January 1 and March 31 each year; $50 late fee; dissolution if delinquent late penalty Certificate of Organization $120 One-time formation fee paid to the Connecticut Secretary of State Annual Report $80 Due between January 1 and March 31 each year; $50 late fee if missed Registered Agent (professional service) $100–$300/yr LLC Attorney registered agent service available Business Name Reservation $60 Holds name for 120 days Trade Name (DBA) / DBA $30 Connecticut trade names are registered with the Secretary of State at the state level.; fee varies Certificate of Amendment (Online (ct.gov/sots)) $120 To change LLC name later Legal / Tax Advisory Varies On-demand attorney consults at LLC Attorney ## How to Form a Connecticut LLC Step by Step ### If You Do It Yourself 1 #### Choose a business name that meets Connecticut's requirements. Your LLC name must be distinguishable from all existing Connecticut entities in the Secretary of State database and must include "Limited Liability Company," "LLC," or "L.L.C." Search at [ct.gov/sots](https://ct.gov/sots) before you file. Your name search is not a reservation — someone can register your chosen name while you are preparing your paperwork. 2 #### Reserve your name if you need time to prepare (optional). File a Name Reservation (Form Online (ct.gov/sots)) with the Connecticut Secretary of State, $60 fee, to hold your name for 120 days. Without this, another entity can file your chosen name between your search and your Certificate of Organization submission. If you are ready to file immediately, you can skip this step. 3 #### Designate your Connecticut registered agent. Every Connecticut LLC must have a [registered agent](/states/ct/registered-agent-connecticut) with a physical Connecticut street address. P.O. boxes are not accepted. If you designate yourself, your personal address becomes publicly searchable on the Secretary of State database — accessible to anyone, including parties who may sue your business. 4 #### Decide your management structure before you open the form. Form Online (ct.gov/sots) requires you to declare member-managed or manager-managed. Member-managed: all owners share authority over daily operations. Manager-managed: one or more designated managers run operations; passive investors do not have management authority. This field cannot be left blank. 5 #### Download the current version of Form Online (ct.gov/sots) from the Connecticut Secretary of State website. Go to [ct.gov/sots](https://ct.gov/sots) and search for "Online (ct.gov/sots)." Always download directly from the Secretary of State — older PDF versions are rejected at filing. Check the revision date printed on the footer before using it. 6 #### Complete Form Online (ct.gov/sots) carefully. Fill in: (1) exact LLC name, (2) registered agent designation with full Connecticut street address, (3) management structure, (4) purpose statement — use the standard all-purpose clause if you're not in a regulated industry, (5) organizer signature. Do not leave any field blank — incomplete forms are rejected with no refund of the filing fee. 7 #### Submit Form Online (ct.gov/sots) and pay the $120 filing fee. File online at [ct.gov/sots](https://ct.gov/sots) or by mail to the Hartford Secretary of State office. Online filing typically processes Online: 3–5 business days; mail: 3–4 weeks. Expedited options (online only): 24-hour +$50. 8 #### Wait for your Certificate of Organization to be approved. Your LLC does not legally exist during this waiting period. You cannot open a business bank account, enter contracts as the LLC, or hire Connecticut employees until the Connecticut Secretary of State approves your Certificate of Organization. Processing can extend to Mail filings may take longer during peak periods. 9 #### Receive and store your stamped Certificate of Organization. The Connecticut Secretary of State returns a certified copy of your approved Certificate of Organization — by email for online filings, or by mail for paper filings. This is your LLC's birth certificate. Keep the original in a secure location and make at least two certified copies immediately. Every bank, most government agencies, and many vendors will ask for a copy. 10 #### Draft your operating agreement. Connecticut law **does not require** every LLC to have a written operating agreement (Conn. Gen. Stat. § 34-255a et seq.). An operating agreement does not need to be filed with the Connecticut Secretary of State — keep it with your company records. Keep it with your company records and provide a copy to every LLC member. A minimum compliant agreement covers: member ownership percentages, management authority, voting rights, profit and loss allocation, and dissolution procedures. A generic national template may not account for Connecticut's specific default rules on member management and profit allocation under the Connecticut Uniform Limited Liability Company Act (Conn. Gen. Stat. § 34-255a). Connecticut courts apply default statutory rules when no operating agreement governs a dispute. 11 #### File your initial Annual Report (Online (ct.gov/sots)) within Between January 1 and March 31 each year. After your Certificate of Organization is approved, you have Between January 1 and March 31 each year to file Online (ct.gov/sots) with the Connecticut Secretary of State. Filing fee: $80. Missing the deadline triggers a $50 late fee; dissolution if delinquent automatic late penalty — no grace period, no warning. 12 #### Apply for your federal EIN with the IRS. Apply free at [irs.gov/ein](https://www.irs.gov/ein). The online application is available Monday–Friday, 7 a.m.–10 p.m. Eastern. There is a 15-minute inactivity timeout. International founders without a U.S. SSN or ITIN must apply by phone (267-941-1099). 13 #### Open a dedicated business bank account. Do not skip this step. Commingling personal and business funds is the most common reason courts pierce the LLC liability shield. To open a [business bank account](/states/co/business-banking-colorado) you will typically need: stamped Certificate of Organization, EIN confirmation letter, your operating agreement, and personal ID of all authorized signers. 14 #### Register for Connecticut state taxes. Your federal EIN does not automatically register you with Connecticut state agencies. Depending on your business, register for Connecticut sales tax (CT Department of Revenue Services) and employer payroll taxes (CT Department of Labor) as applicable. Failure to register when required results in back taxes, penalties, and interest. 15 #### Pay your Connecticut annual state taxes and fees by the correct deadlines. Connecticut LLCs with pass-through taxation have no franchise tax — members pay Connecticut personal income tax at graduated rates of 2–6.99% on their share of LLC income. Connecticut also offers a Pass-Through Entity Tax (PTET) election at 6.99%, which may benefit members by allowing a deduction for state taxes at the entity level. Consult a tax professional about the Connecticut PTET election. Your LLC must file an $80 Annual Report with the Connecticut Secretary of State between January 1 and March 31. Missing this deadline triggers a $50 late fee and risks dissolution. 16 #### Set annual compliance reminders for every year going forward. Connecticut LLCs must file and pay on a recurring basis: - Annual Report: $80, due between January 1 and March 31 each year at ct.gov/sots — $50 late fee if missed - Connecticut income tax: graduated 2–6.99% on LLC pass-through income - Consider Connecticut PTET election (6.99%) for potential federal SALT deduction benefits — consult a tax professional - Sales tax registration: required if selling taxable goods or services in Connecticut Missing any of these puts your LLC in bad standing with the Connecticut Secretary of State or CT Department of Revenue Services. If you would rather not manage this process yourself, LLC Attorney handles Connecticut LLC formation starting at $49. Ready to form your Connecticut LLC?LLC Attorney handles Connecticut LLC formation starting at $49. Same-day filing available at no markup on state fees.[Start My Connecticut LLC](https://app.llcattorney.com/formation?intake_type=formation&companyState=Connecticut) ### If LLC Attorney Does It for You 1 Submit your information Name, management structure, registered agent preference, and target formation date. No forms to find or download. 2 We handle everything LLC Attorney files your Certificate of Organization, drafts your operating agreement, handles your EIN application, and covers same-day filing if needed. 3 Receive your documents Approved Certificate of Organization, EIN confirmation, and operating agreement through your client portal. Annual compliance reminders included. ## What You Actually Get When You Form Your Connecticut LLC with LLC Attorney A $0 filing offer is never really free in Connecticut. Before any service markup, Connecticut itself charges $120 at formation for the Certificate of Organization. Once you add a Connecticut registered agent, an operating agreement, and the EIN that nearly every LLC needs, an advertised free price typically lands in the $220 to $500 range. Included with LLC Attorney formation: - Same-day or 24-hour Connecticut filing at no markup on the state fee. Most services charge extra to expedite. - An attorney-drafted operating agreement, customized, not an auto-generated template. - Access to attorney-trained Business Success Advisors at no charge, to guide entity and structure decisions. - Optional flat-fee attorney consultations (no retainer) when your situation needs a licensed attorney. - One account to manage ongoing Connecticut compliance: annual report filing and mail scanning. All told, a Connecticut LLC formation with registered agent service and operating agreement typically runs $220 to $500, which is moderate for a state with a 6.99% top income tax rate and annual compliance built in. ## Starting Your Connecticut LLC with LLC Attorney Connecticut LLC formation costs $120 upfront, takes 3–5 business days online, and requires an $80 Annual Report due each year between January 1 and March 31. The most common compliance error is missing the March 31 Annual Report deadline. Connecticut's PTET election is worth evaluating with a tax professional for multi-member LLCs. LLC Attorney handles Connecticut LLC formation and registered agent service starting at $49. LLC Attorney handles Connecticut LLC formation starting at $49. Same-day filing is available at no markup on state fees. On-demand, flat-fee attorney consultations in 30-minute increments — no retainer — cover operating agreement drafting, entity type questions, and state tax planning. Everything you need for Connecticut, without a traditional law firm retainer. See our [full pricing](/pricing) for all service tiers. Ready to Launch Your Business in Connecticut?Follow our fast, easy process to get started right now.[Start My Business](https://app.llcattorney.com/formation?intake_type=formation) ## Frequently Asked Questions How long does it take to form a Connecticut LLC? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) Connecticut online filings through ct.gov/sots typically take 3–5 business days to process. Mail filings take 3–4 weeks. Connecticut offers a 24-hour expedited service for an additional $50 (total $170). For most founders, the standard online filing is sufficient. What taxes does a Connecticut LLC have to pay? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) Connecticut LLCs pay no franchise tax. Members pay Connecticut income tax at graduated rates of 2–6.99% on their share of pass-through LLC income. Connecticut also offers a Pass-Through Entity Tax (PTET) election — a tax planning option that may allow entity-level tax payments with a corresponding state tax credit for members. If your LLC sells taxable goods or services, register for Connecticut sales tax with the Department of Revenue Services. Do single-member LLCs owe the same Connecticut state taxes as multi-member LLCs? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) Single-member Connecticut LLCs are disregarded entities federally — income flows to the sole member's Connecticut and federal returns at the graduated 2–6.99% Connecticut rate. The LLC still owes the $80 Annual Report to the Secretary of State. Single-member LLCs can also consider the Connecticut PTET election — consult a tax professional. Does a Connecticut LLC need a business license? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) Connecticut has no statewide general business license. Local municipalities may require local business licenses or permits. Certain regulated industries require state-level licenses through the Connecticut Department of Consumer Protection or other agencies. Check both state and local requirements for your industry. Can a Connecticut LLC hire employees? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) A Connecticut LLC can hire employees. You will need an EIN from the IRS, register with CT Department of Labor for payroll taxes, and comply with Connecticut employment law requirements. LLC Attorney's formation packages include EIN filing. How do I change my Connecticut LLC name? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) To change your Connecticut LLC name, file an amendment online at ct.gov/sots. The filing fee is $120. Update any Connecticut Trade Name registrations separately if you operate under a different name. The form is Online (ct.gov/sots) and the fee is $120. How do I dissolve a Connecticut LLC? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) To dissolve a Connecticut LLC, file a Certificate of Dissolution online at ct.gov/sots. Ensure all Annual Reports are current and close Connecticut tax accounts with the Department of Revenue Services. Connecticut processes online dissolution filings in 3–5 business days. What happens if I don't pay my Connecticut state taxes or fees? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) Missing the Annual Report deadline triggers a $50 automatic late fee. If the report remains unfiled, Connecticut will administratively dissolve the LLC. Reinstatement requires filing the delinquent report, paying all fees and penalties, and submitting a reinstatement application to the Connecticut Secretary of State. What happens if my registered agent can't be reached? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) If the Connecticut Secretary of State cannot deliver legal notices to your registered agent, the state can administratively dissolve your LLC without additional warning. A professional registered agent service ensures a qualified person is available at a physical Connecticut address during business hours to receive any legal documents on your behalf. Does Connecticut require an LLC Operating Agreement? ![icon](/_next/image?url=%2Fimages%2Ficons%2FfaqPlus.png&w=128&q=75) Connecticut does not legally require an LLC operating agreement, but it is strongly recommended. Without one, your LLC is governed by Connecticut's default LLC statute (Conn. Gen. Stat. § 34-255a), which may not reflect your intended management structure or profit-sharing arrangement. Banks require a written operating agreement to open a business account. ## Learn More About Connecticut - [Connecticut Registered Agent](/states/ct/registered-agent-connecticut) - [Connecticut Virtual Office](/states/ct/virtual-office-connecticut) - [Connecticut Corporation Formation](/states/ct/corporation-formation-connecticut)