Get Answers Support Tax Filings & Payments State Filings W-2 State Filing Connecticut - W2 State Filing Requirements Last modified 5/25/2020 2:52:59 AM EST The state requires the filing of Form W-2 if wages were paid to the Connecticut employees during the calendar year, even if no Connecticut income tax was withheld. Connecticut State ID Format: 9 digits followed by a hyphen and 3 digits (Eg: 999999999-999) or 12 digits (Eg: 999999999999) Filing Criteria and Requirements Criteria 1: If there is any Connecticut state tax withheld Filing Method: Direct State Filing You must file a W-2 directly with the state. Additional Form Required: Form CT-W3 / CT-W3 HHE If you file W2 state forms with TaxBandits, we support Form CT-W3/CT-W3 HHE at no additional cost Deadline: January 31, 2025 Criteria 2: If there is no Connecticut state tax withheld Filing Method: Direct State Filing You must file a W-2 directly with the state. Additional Form Required: Form CT-W3 / CT-W3 HHE If you file W2 state forms with TaxBandits, we support Form CT-W3/CT-W3 HHE at no additional cost Deadline: January 31, 2025 For more information about Connecticut W-2 filing requirements, click here. Was this helpful? Yes No Related Questions Delaware - W2 State Filing Requirements District of Columbia - W2 State Filing Requirements Maryland - W2 State Filing Requirements Connecticut: 1099 State Filing Requirements Go to Home Page Need more help? Get in touch with our dedicated support team Contact Us (704) 684-4751 support@taxbandits.com Sign Up for a FREE TaxBandits Account! The Smart CPA Choice Register Now Already have an account? Sign in