N.M. Code R. § 3.1.3.11
B. Example: A taxpayer and the taxpayer's attorney attend an informal conference with the secretary and department attorneys to discuss the tax consequences of the taxpayer's activities as a seller of tangible personal property in New Mexico. The taxpayer's attorney announces that a buyer (who is also a taxpayer) of the client's property has no objections to information from the buyer's tax returns being revealed by the secretary to those present in the conference. The attorney, although not representing the buyer, has a signed letter from the buyer “waiving” confidentiality of information in the buyer's returns which are in the possession of the department. This “waiver” does not make it lawful for the secretary or any other department employee to act upon this request by revealing the buyer's tax records or to give any information about the buyer acquired as a result of employment by the department. The buyer can obtain the information from the department and make any use of it the buyer deems proper. Or, in the alternative, the buyer could appoint the attorney in question the buyer's “authorized representative” to receive this information.
[11/5/1985, 8/15/1990, 10/31/1996; 3.1.3.11 NMAC - Rn & A, 3 NMAC 1.3.11, 12/29/2000]