Circular 230 Ethics for Tax Practitioners — Complete Guide

Overview of Circular 230

Circular 230 (31 C.F.R. Part 10) governs the practice of tax professionals before the IRS. It establishes the standards of conduct for attorneys, CPAs, enrolled agents, enrolled retirement plan agents, enrolled actuaries, and other practitioners who represent taxpayers before the IRS. Violations of Circular 230 can result in censure, suspension, or disbarment from practice before the IRS — administered by the IRS Office of Professional Responsibility (OPR).

The Competence Standard Under §10.35

Section 10.35 requires practitioners to have the "knowledge, skill, thoroughness, and preparation necessary for the matter." This is not a static requirement — a practitioner who is competent in individual income tax preparation may not be competent in complex partnership tax, estate planning, or IRS criminal defense. Practitioners must either develop competence in new areas or refer clients to practitioners who have the required competence.

Developing competence: A practitioner can develop competence in a new area through: (1) study and research; (2) consultation with other practitioners; (3) association with a practitioner who has the required competence; or (4) a combination of these approaches. The key is that the practitioner must be competent before undertaking the representation — not after.

Referral obligations: When a practitioner lacks competence in a matter, they must either: (1) decline the engagement; (2) associate with a competent practitioner; or (3) refer the client to a competent practitioner. Accepting an engagement without the required competence — and without disclosing the limitation to the client — violates §10.35 and may constitute malpractice.

Written Advice Standards Under §10.37

Section 10.37 establishes standards for written tax advice — emails, letters, memoranda, and other written communications that address federal tax issues. Written advice must: (1) be based on reasonable factual and legal assumptions; (2) reasonably consider all relevant facts and circumstances; (3) use reasonable efforts to identify and ascertain the relevant facts; (4) not rely on representations of the taxpayer or others if the practitioner knows or should know the representations are incorrect; and (5) consider all relevant authorities.

Relying on client representations: Practitioners can rely on client representations — but only if the representations are reasonable and the practitioner has no reason to believe they are incorrect. If a client tells the practitioner that all income has been reported, the practitioner can rely on that representation — but if the practitioner has reason to believe income has been omitted (e.g., the client's lifestyle is inconsistent with their reported income), the practitioner cannot simply accept the representation.

The covered opinion rules: Prior to 2014, Circular 230 had detailed "covered opinion" rules for written advice on tax shelter transactions. These rules were repealed in 2014 and replaced with the current §10.37 standards, which apply to all written advice. The current standards are more principles-based and less prescriptive than the old covered opinion rules.

OPR Sanctions and Disciplinary Procedures

The IRS Office of Professional Responsibility (OPR) enforces Circular 230. OPR can impose the following sanctions: (1) censure — a public reprimand; (2) suspension — temporary prohibition from practice before the IRS; and (3) disbarment — permanent prohibition from practice before the IRS. OPR can also impose monetary penalties for certain violations.

Common OPR violations: The most common violations that result in OPR sanctions include: (1) failure to file personal tax returns; (2) failure to pay personal tax liabilities; (3) criminal convictions related to tax or financial crimes; (4) aiding and abetting tax evasion; (5) preparing fraudulent returns; and (6) failure to respond to OPR inquiries. Practitioners who have personal tax compliance issues are at significant risk of OPR sanctions — even if their professional conduct is otherwise exemplary.

Practitioner protection: The best protection against OPR sanctions is maintaining personal tax compliance, following Circular 230 standards in all client engagements, and maintaining adequate professional liability insurance. Practitioners who receive an OPR inquiry should immediately retain an attorney who specializes in practitioner discipline — responding to OPR without counsel is inadvisable.

Frequently Asked Questions