Co-operative society tax option under section 115BAE requires an irrevocable election with affirmative eligibility and restricted business declarations. Application form enables a co-operative society to opt into the section 115BAE tax regime by providing corporate and registration details and affirming that the election is irrevocable. The applicant must certify that the business was not formed by split or reconstruction, that no previously used machinery is employed except as permitted by the statutory explanations, and that the society's activities are limited to manufacture or production (and related research or distribution) of the specified article. The principal officer must sign and affirm satisfaction of all conditions of section 115BAE.