31 C.F.R. § 10.50 Sanctions.
Title 31 - Money and Finance: Treasury
(a) Authority to censure, suspend, or disbar. The Secretary of the Treasury, or his or her delegate, after notice and an opportunity for a proceeding, may censure, suspend or disbar any practitioner from practice before the Internal Revenue Service if the practitioner is shown to be incompetent or disreputable, fails to comply with any regulation in this part, or with intent to defraud, willfully and knowingly misleads or threatens a client or prospective client. Censure is a public reprimand. (b) Authority to disqualify. The Secretary of the Treasury, or his or her delegate, after due notice and opportunity for hearing, may disqualify any appraiser with respect to whom a penalty has been assessed under section 6701(a) of the Internal Revenue Code. (1) If any appraiser is disqualified pursuant to this subpart C, such appraiser is barred from presenting evidence or testimony in any administrative proceeding before the Department of Treasury or the Internal Revenue Service, unless and until authorized to do so by the Director of Practice pursuant to §10.81, regardless of whether such evidence or testimony would pertain to an appraisal made prior to or after such date. (2) Any appraisal made by a disqualified appraiser after the effective date of disqualification will not have any probative effect in any administrative proceeding before the Department of the Treasury or the Internal Revenue Service. An appraisal otherwise barred from admission into evidence pursuant to this section may be admitted into evidence solely for the purpose of determining the taxpayer's reliance in good faith on such appraisal.
Title 31: Money and Finance: Treasury
PART 10—PRACTICE BEFORE THE INTERNAL REVENUE SERVICE
Subpart C—Sanctions for Violation of the Regulations
§ 10.50 Sanctions.
