FORMATION ✓ Every figure sourced

Connecticut Corporation
fees and filing deadlines

A separate legal entity owned through shares. 'C corp' and 'S corp' are not entity types - they are federal tax elections made after formation, on the same underlying corporation.

To start

Form a Corporation in Connecticut
Certificate of Incorporation
$250

$250 includes minimum franchise tax for up to 20,000 authorized shares

Every year after that

FilingFeeWhen it is due
Annual Report (corporation/nonprofit)$150Due by the last day of the calendar month the business was formed, every year.

About $150 a year to stay in good standing at today’s fees, counting only recurring filings and spreading anything filed less often across the years between. One-time filings and taxes are excluded.

Where each figure comes from

Annual Report (corporation/nonprofit)
$150

Due by the last day of the calendar month the business was formed, every year.

Get your own dates

The deadlines above are the rules. Your actual dates depend on when you form, so the calendar is built from your formation date — free, no account.

Build my checklist

Other structures in Connecticut

Limited Liability CompanyNonprofit CorporationLimited PartnershipLimited Liability Partnership

The same structure elsewhere

ArizonaArkansasCaliforniaColoradoDelawareFloridaGeorgiaHawaiiIllinoisIndianaIowaKansasKentuckyLouisianaMarylandMassachusettsMichiganMinnesotaMissouriMontanaNew JerseyNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth DakotaTennesseeTexasUtahVermontVirginiaWyoming