Conn. Gen. Stat. § 12-556g
Surcharge on admission charge to events at Tennis Foundation of Connecticut facilities.
(b) The surcharge imposed in subsection (a) of this section is due and payable to the Tennis Foundation of Connecticut or any successor organization monthly on or before the last day of the month next succeeding each monthly period except that if the total surcharge liability for the twelve-month period ended on the preceding September thirtieth was less than four thousand dollars the sponsor or promoter may pay the surcharge on a quarterly basis.