Adoption of the "Manual for Discounting Oil and Gas Income." This manual specifies the methods and procedures to calculate the present value of oil and gas properties using discounted future income under Tax Code, Chapter 23.175, and directs each appraisal district to use the specified methods and procedures. The Comptroller of Public Accounts adopts by reference the Manual for Discounting Oil and Gas Income dated June 2021. The manual is accessible on the Property Tax Assistance Division website. Copies of the manual can be obtained from the Comptroller of Public Accounts, Property Tax Assistance Division, P.O. Box 13528, Austin, Texas 78711-3528. Copies also may be requested by calling our toll-free number 1-800-252-9121. In Austin, call (512) 305-9999.