Connecticut . 2026 filing guide
Connecticut Secretary of State filings, deadlines, and how to do them right.
Annual reports, business search, registered agent changes, reinstatement, dissolution, tax registration. Every Connecticut filing explained, plus the business environment, regulatory bodies, and a year-round compliance calendar. Verified against the Connecticut Secretary of the State, Business Services Division as of June 2026.
Verified against Connecticut Secretary of the State, Business Services Division on Jun 12, 2026
Agency
Connecticut Secretary of the State, Business Services Division
Branded as Connecticut Business Services
Phone
860-509-6003
Mon-Fri 8am-4:30pm ET
Annual due
Anniversary month
$50 penalty
Processing
7-10 business days
Online filings
Connecticut business environment
Why founders choose Connecticut (and what to know first)
Strong insurance and financial services ecosystem. No local sales tax (state level only). Highly educated workforce. Proximity to New York and Boston markets.
Economy
~$320B economy
Registered entities
~400,000 active entities
New formations / year
~50,000 annually
Key industries
Insurance (Hartford global HQ), financial services, aerospace (Pratt + Whitney), pharma, defense, real estate