§ 10.34 Standards with respect to tax returns and documents, affidavits and other papers.

(a) Tax returns. (1) A practitioner may not willfully, recklessly, or through gross incompetence—

(i) Sign a tax return or claim for refund that the practitioner knows or reasonably should know contains a position that—

(A) Lacks a reasonable basis;

(B) Is an unreasonable position as described in section 6694(a)(2) of the Internal Revenue code (Code) (including the related regulations and other published guidance); or

(C) Is a willful attempted by the practitioner to understate the liability for tax or a reckless or intentional disregard of rules or regulations by the practitioner as described in section 6694(b)(2) of the Code (including the related regulations and other published guidance).

(ii) Advise a client to take a position on a tax return or claim for refund, or prepare a portion off a tax return or claim for refund containing a position, that—