Okla. Stat. tit. 68, § 2905

The provisions of Sections 2904 through 2911 of this title shall apply only to persons sixty-five (65) years of age or older or to any totally disabled person, who is head of a household, was a resident of and domiciled in this state during the entire preceding calendar year, and whose gross household income does not exceed the amount of Twelve Thousand Dollars ($12,000.00) for any calendar year. The provisions of these sections shall be administered by the Oklahoma Tax Commission, which shall devise and furnish appropriate forms for claims, reports of household income, proof of property taxes paid, and such other forms as may be deemed necessary to support claims made pursuant to said sections.