22 Tex. Admin. Code § 501.75
Except by permission of the client or the authorized representatives of the client, a person or any partner, officer, shareholder, or employee of a person shall not voluntarily disclose information communicated to him by the client relating to, and in connection with, professional accounting services or professional accounting work rendered to the client by the person. Such information shall be deemed confidential. However, nothing herein shall be construed as prohibiting the disclosure of information required to be disclosed by applicable federal laws, federal government regulations, including requirements of the PCAOB, under a summons under the provisions of the Internal Revenue Code of 1986 and its subsequent amendments, the Securities Act of 1933 (15 U.S.C. Section 77a et seq.) and its subsequent amendments, or the Securities Exchange Act of 1934 (15 U.S.C. Section 78a et seq.) and its subsequent amendments, by the standards of the public accounting profession in reporting on the examination of financial statements or as prohibiting disclosures pursuant to a court order signed by a judge, a congressional or grand jury subpoena, investigations or proceedings under the Act, ethical investigations conducted by private professional organizations, or in the course of peer reviews.
Source Note:The provisions of this §501.75 adopted to be effective June 11, 2000, 25 TexReg 5338; amended to be effective February 4, 2004, 29 TexReg 963; amended to be effective February 17, 2008, 33 TexReg 1094; amended to be effective June 11, 2008, 33 TexReg 4503; amended to be effective January 28, 2009, 34 TexReg 428; amended to be effective October 7, 2009, 34 TexReg 6853; amended to be effective February 9, 2011, 36 TexReg 545.