Conn. Gen. Stat. § 12-204d: Payment and disposition of installments.

The amount of every installment of estimated tax, or payment on account thereof, shall be paid to the commissioner in cash or by check, draft or money order drawn to the order of the Commissioner of Revenue Services of the state of Connecticut. All funds received by the commissioner under the provisions of sections 12-204, 12-204c to 12-204g, inclusive, 12-212 and 12-212a shall be recorded with the Comptroller and shall be deposited daily with the State Treasurer. The commissioner shall issue his receipt to any domestic insurance company or other person for any payment made under the provisions of said sections, upon request.