Connecticut annual report: due date, fee, and late penalty

Jan 1 to Mar 31, every year. Due in a fixed window every year, January 1 through March 31, regardless of formation date. March 31 is the deadline. Online only. First due January 1 - March 31 of the year after formation, with no grace for a late-in-year formation - an LLC formed in December gets about three months.

$80 flat.

No late fee; dissolution possible after a year in default, 3 months to file. No late fee and no interest. Connecticut will not issue a Certificate of Legal Existence while the report is outstanding, and can dissolve the LLC by forfeiture once it has been in default more than a year, after notice and a three-month window to file.

Anniversary month, every year. The first report is due within 90 days of incorporation; later reports are due by the last day of the anniversary month of incorporation each year. A report is owed in the incorporation year itself - due 90 days after incorporating, which can land in the next calendar year for a late-year incorporation.

$150 flat for a stock corporation ($50 for a nonstock corporation).

No late fee; dissolution after 1+ year default, 3 months to file. Connecticut charges no late fee, but corporations more than a year in default can be administratively dissolved after notice, with 3 months to file.