A licensee may not in the performance of professional services knowingly misrepresent facts, nor subordinate his judgment to others; in tax practice, however, a licensee may resolve doubt in favor of his client as long as there is reasonable support for his position.
49 Pa. Code § 11.22
The provisions of this §11.22 issued under section 506 of The Administrative Code of 1929 (71 P. S. § 186); and section 3(a)(10)-(12) of the CPA Law (63 P. S. § 9.3(a)(10)-(12)).