Connecticut LLC Formation
Cost Calculator

Forming an LLC in Connecticut requires a state filing fee of $120. Combined with a registered agent ($150/year estimated), annual report fees of $80, your first-year total comes to approximately $350.

The standard processing time for Connecticut LLC filings is 3 business days, with expedited processing available for $50. Online filing through the Connecticut Secretary of State is available and typically processes faster than paper filings.

Connecticut LLCs are governed by Conn. Gen.

Stat. § 34-243a.

Connecticut adopted the Uniform LLC Act in 2017. Annual reports are due between January 1 and March 31.

Connecticut does not have a Series LLC statute. Connecticut's charging order protection is the exclusive remedy for LLC member creditors.

Professionals (attorneys, CPAs, architects, engineers, physicians, dentists) in Connecticut must form a Professional LLC (PLLC) or Professional Corporation (PC) under Connecticut General Statutes. Connecticut's Business Entity Tax (BET) — formerly $250 per 2-year period — was eliminated effective 2022, reducing ongoing LLC compliance costs.

Connecticut's SBDC and CTNext (startup accelerator) provide resources for small businesses and startups. Connecticut's Enterprise Zone tax credits are available for qualifying businesses in designated zones.

Connecticut has a growing insurance and financial services ecosystem in Hartford with significant LLC formation activity.

After initial formation, Connecticut LLCs face ongoing compliance costs. The annual report fee is $80, which must be filed to keep your LLC in good standing.

A registered agent — required by Connecticut law — typically costs $100–$300/year depending on the service provider.

Expect annual ongoing costs of approximately $230 for a Connecticut LLC (registered agent + annual fees). This does not include business licenses, professional fees, or taxes.

Connecticut may also require local business licenses depending on your municipality and business type. Many cities require a business license ranging from $25 to $500/year.

Check with your county clerk's office for local requirements beyond the state-level LLC registration.

Many entrepreneurs consider forming their LLC in a different state — most commonly Delaware, Wyoming, or Nevada — to take advantage of favorable laws. However, if you operate primarily in Connecticut, you will likely still need to register as a foreign LLC in Connecticut, paying both that state's fees AND Connecticut's foreign registration fee, making domestic registration typically more cost-effective.

Delaware, Wyoming, and Nevada are popular for their advanced LLC laws, privacy protections, and tax benefits. However, for a small business operating solely in Connecticut, forming domestically is usually simpler and more cost-effective.

An attorney or business formation service can help you decide the optimal formation state for your specific situation. Factors include where you'll operate, the nature of your assets, investor requirements, and long-term exit plans.

While Connecticut does not legally require an LLC operating agreement, it is strongly recommended for all Connecticut LLCs. An operating agreement defines member rights, profit distribution, voting procedures, and what happens if a member leaves or the LLC is dissolved.

Without an operating agreement, Connecticut's default LLC rules under Conn. Gen.

Stat. § 34-243a will govern your business, which may not align with your intentions.

For single-member LLCs, an operating agreement helps establish the legal separation between you and the business — important for liability protection.

Operating agreements drafted by an attorney in Connecticut typically cost $500–$1,500 for simple agreements or $1,500–$3,000 for complex multi-member structures. Online templates are available but may miss state-specific provisions.

Connecticut requires every LLC to maintain a registered agent — an individual or company with a physical address in Connecticut who can accept legal documents during business hours. You can serve as your own registered agent, use an owner or employee at a Connecticut address, or hire a professional registered agent service.

Professional registered agent services in Connecticut typically cost $100–$300/year and offer advantages including privacy (your home address isn't public record), reliability (they never miss service of process), and compliance reminders for annual report deadlines.

Failing to maintain a registered agent in Connecticut can result in administrative dissolution of your LLC. If you move or change addresses, update your registered agent information with the Connecticut Secretary of State promptly.

By default, a single-member LLC in Connecticut is taxed as a sole proprietorship, and a multi-member LLC is taxed as a partnership — both pass-through entities where profits are reported on the owners' personal tax returns. Connecticut LLCs can also elect S-Corp or C-Corp tax treatment for potential tax savings.

Connecticut may impose its own state income tax on LLC profits. Depending on your revenue and structure, an S-Corp election can sometimes reduce self-employment taxes, though this adds payroll complexity.

Consult a CPA familiar with Connecticut tax law before making tax elections.

Connecticut LLCs may also be subject to state sales tax if selling taxable products or services. Register for a sales tax permit with Connecticut's Department of Revenue and file returns on the schedule required for your revenue level.

LLC formation is just the beginning of the legal and financial structure. If the LLC will hold real property, the Connecticut Closing Cost Estimator breaks down buyer transaction costs when acquiring property in the entity name.

For businesses checking statute of limitations exposure on contracts, the Connecticut Statute of Limitations Lookup covers written contract and business dispute filing deadlines. And if you're a sole proprietor evaluating whether a bankruptcy fresh start makes sense before forming the LLC, the Connecticut Chapter 7 Means Test Calculator determines eligibility for Chapter 7 discharge.