Each cooperative doing business in this state pursuant to this chapter shall pay annually, on or before July first, to the Secretary of the State, a fee of twenty-five dollars, but shall be exempt from all other excise and income taxes.
Conn. Gen. Stat. § 33-240
(1949 Rev., S. 5349; May Sp. Sess. P.A. 92-6, S. 92, 117.)
The legislature has wide discretion in the classification of property for taxation and in granting exemptions. 142 C. 483.