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Connecticut LLC Annual Tax & Fee Calculator
Calculate your total costs for forming and maintaining an LLC in Connecticut. $250 annual Business Entity Tax.
Need Registered Agent Service?
Required if no CT address
First Year Total
$450
One-Time Formation Costs
Annual Fees
Higher Ongoing Costs
Connecticut has higher-than-average LLC fees. Consider whether the state's benefits justify the costs.
Connecticut LLC Key Facts
Important information for Connecticut LLC owners
$250 annual Business Entity Tax
Higher ongoing costs
Proximity to NYC market
Strong financial services sector
Connecticut LLC Deadlines & Due Dates
Important dates for Connecticut LLC compliance
Annual Tax Due
March 15 (Business Entity Tax)
Annual Report
March 31 each year
Processing Time
5-7 business days
Connecticut LLC Forms
Required forms for Connecticut LLC compliance
Connecticut LLC FAQ
Common questions about Connecticut LLC taxes and fees
LLC Formation and Annual Costs in Connecticut (2026)
Forming an LLC in Connecticut requires a $120 filing fee paid to the Connecticut Secretary of State. After formation, Connecticut LLCs must pay a $80 annual fee for the annual report. The state also charges a Business Entity Tax ($250, yearly): Flat $250 annual business entity tax for most LLCs.
| Fee Type | Amount | Frequency |
|---|---|---|
| Articles of Organization (filing fee) | $120 | One-time |
| Annual Report / Annual Fee | $80 | Yearly |
| Business Entity Tax | $250 | Yearly |
| Registered Agent (optional, if using service) | $125/year | Yearly |
Your total first-year cost (filing fee + annual fee) is approximately $200. Ongoing costs are $330 or more per year in recurring fees.
Connecticut LLC Compliance Requirements
Maintaining your Connecticut LLC in good standing requires meeting several compliance obligations.
Annual Report: Connecticut LLCs must file an annual report by March 31 each year. The filing fee is $80.
Registered Agent: Every Connecticut LLC must maintain a registered agent with a physical address in the state. The registered agent receives legal and tax documents on behalf of the LLC. You can serve as your own registered agent or hire a professional service (typically $125/year).
Operating Agreement: While Connecticut does not legally require an operating agreement, having one is strongly recommended. It defines ownership structure, member roles, profit-sharing, and management procedures for your LLC.
EIN (Employer Identification Number): All LLCs with more than one member, or that have employees, need an EIN from the IRS. Single-member LLCs without employees can use their Social Security number but obtaining an EIN is still recommended for banking and tax purposes. Applying is free through the IRS website.
Tax Treatment of Connecticut LLCs
Connecticut LLCs are classified as pass-through entities for federal tax purposes. A single-member LLC is treated as a disregarded entity (reported on Schedule C of the owner's personal return), while a multi-member LLC is taxed as a partnership (filing Form 1065 with K-1s issued to each member).
Connecticut taxes LLC income at personal income tax rates ranging from 3% to 6.99%. Additionally, most LLCs must pay a $250 annual Business Entity Tax. This is in addition to the $80 annual report fee, bringing the total annual compliance cost to $330 before any income taxes.
S-Corp Election: Connecticut LLCs can elect S-Corp tax status by filing IRS Form 2553. This can reduce self-employment taxes for profitable LLCs by splitting income between a reasonable salary (subject to payroll taxes) and distributions (not subject to SE tax). This election is typically beneficial when your LLC consistently earns over $40,000-$50,000 in annual profit.
Official Connecticut Resources
- Connecticut Secretary of State
Business filings
- Connecticut Department of Revenue Services
Tax information
Fees are subject to change. This calculator provides estimates based on current Connecticut law. Consult with a tax professional or attorney for advice specific to your situation. Fee information accurate as of January 12, 2026.