Conn. Agencies Regs. § 30-6-A3
Every renewal application, accompanied by the proper fee in the form of credit card, debit card, a certified check, postal money order, bank check or cash shall be filed with the department before the existing permit expires. Late renewal fees may also be accepted in the form of credit card, debit card, a certified check, postal money order, bank check or cash. The department may, in its discretion, accept noncertified checks for renewal or late renewal fees. Every renewal application for an on-premises consumption permit, except airline, boat, caterer, and railroad permit shall be accompanied by: approval from the local fire marshall, and a notarized copy of the license from the division of special revenue if the permit is provided for by section 30-33b of the Connecticut General Statutes.
Conn. Agencies Regs. § 30-6-A3