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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
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.