Okla. Stat. tit. 68, § 68-1214: Exemption from excise and income taxes - License fee

Each cooperative and each foreign corporation transacting

business in this State pursuant to the Rural Electric Cooperative

Act (18 O.S.1961 Sections 437 - 437.30) shall pay annually, on or

before the Thirty-first day of August, to the Tax Commission, a fee

of One Dollar ($1.00) for each one hundred persons or fraction

thereof to whom electricity is supplied within the state by it, as

of June 30th preceding, but shall be exempt from all other excise

and income taxes whatsoever.