Circular 230: Rules Governing Tax Practitioners Before the IRS

Treasury Department Circular 230 establishes the standards of conduct governing attorneys, certified public accountants, enrolled agents, and other representatives who practice before the Internal Revenue Service. Codified at 31 C.F.R. Part 10, these rules define who may represent taxpayers, what duties practitioners owe to both clients and the IRS, and what sanctions apply when those duties are breached. Practitioners, taxpayers navigating representation, and researchers studying IRS administrative law will find Circular 230 central to understanding the legal framework that structures professional tax practice.

Definition and scope

Circular 230 is a body of federal regulations issued by the Department of the Treasury under authority derived from 31 U.S.C. § 330, which grants Treasury the power to regulate practice before its agencies, including the IRS. The current edition is published by the IRS as Treasury Department Circular No. 230 (Rev. 6-2014).

Who is covered. The regulations apply to five principal categories of practitioners:

1. Attorneys — licensed members of a state bar in good standing
2. Certified Public Accountants (CPAs) — holders of active CPA licenses issued by state boards
3. Enrolled Agents (EAs) — individuals who have passed the IRS Special Enrollment Examination or demonstrated qualifying prior federal tax experience, and who maintain active enrollment through the IRS Office of Enrollment
4. Enrolled Retirement Plan Agents — specialists authorized to represent taxpayers in matters related to employee retirement plans
5. Registered Tax Return Preparers — a category whose scope has been subject to litigation; practitioners in this category currently operate under limited practice rights following Loving v. IRS, 742 F.3d 1013 (D.C. Cir. 2014)

Scope of practice before the IRS. "Practice before the IRS" encompasses preparing and filing documents, corresponding with IRS personnel, rendering written tax advice, and representing taxpayers in examinations, appeals, and collection proceedings. It does not include the mechanical act of preparing a return with no client-facing advocacy role.

The regulations are administered through the IRS Office of Professional Responsibility (OPR), which investigates complaints and initiates disciplinary proceedings. Practitioners interacting with the IRS appeals process or audit proceedings work within a system where OPR oversight is always a background constraint.

How it works

Circular 230 operates through three interlocking mechanisms: affirmative duties, prohibited conduct, and a tiered disciplinary structure.

Affirmative duties require practitioners to:

1. Exercise due diligence in preparing returns, advising clients, and representing taxpayer positions (§10.22)
2. Promptly advise clients of errors and omissions in prior returns and the resulting legal obligations (§10.21)
3. Submit records or information requested by the IRS unless privileged (§10.20)
4. Charge fees that are not unconscionable and disclose referral fee arrangements (§10.27, §10.30)
5. Maintain the competence necessary to handle the specific matter being undertaken (§10.35)

Prohibited conduct includes:

• Making false or misleading statements to the IRS or clients
• Unreasonably delaying the prompt disposition of matters before the IRS
• Assisting in unauthorized practice
• Issuing written tax advice with reliance on unreasonable factual or legal assumptions — the "covered opinion" provisions that were restructured by the 2014 revision replaced the prior "more likely than not" regime with a general competence and diligence standard under §10.37

Disciplinary structure. OPR may impose three categories of sanction (IRS Publication 947):

1. Censure — a public reprimand with no suspension of practice rights
2. Suspension — temporary disqualification from practice before the IRS for a defined period
3. Disbarment — permanent revocation of the right to practice before the IRS, subject to a five-year waiting period before a reinstatement petition may be filed

Monetary penalties are available under 31 U.S.C. § 330(b) against practitioners and, in the case of firm violations, against their employing firms. Proceedings before OPR follow the procedures in Subpart D of Circular 230, with the right to a hearing before an administrative law judge and appeal to the Treasury Secretary's delegate.

Common scenarios

Return preparation and signing. A practitioner who signs a return as a paid preparer adopts obligations under both Circular 230 and the Internal Revenue Code (§6694, which imposes preparer penalties for understatements attributable to unreasonable positions). An EA who overstates deductions without adequate basis may face both a $1,000 penalty per IRC §6694(a) and an OPR investigation.

Written tax advice. Under §10.37, practitioners must base written advice on reasonable factual and legal assumptions, not rely on representations known to be incorrect, and consider all relevant facts. Tax shelter promoters and their advisors have historically been the primary target of this provision, as described in tax shelter definitions and IRS enforcement.

Conflicts of interest. Section 10.29 prohibits representation of a client when that representation is directly adverse to another client's interests unless both clients provide informed written consent and the practitioner reasonably believes representation of each will not be materially limited. This applies frequently in trust fund recovery penalty matters, where a corporate officer and the corporation may have divergent interests — a scenario analyzed further in responsible party trust fund recovery penalty.

Contingent fees. Section 10.27 prohibits contingent fees for preparing original tax returns and for advice or representations regarding refund claims that do not arise from examination or administrative proceedings. Contingent fees are permitted for matters involving IRS examinations, offers in compromise, and tax penalty abatement proceedings.

Decision boundaries

Several distinctions govern how Circular 230 applies in ambiguous situations.

Enrolled Agent vs. Attorney vs. CPA — scope comparison. All three have unlimited representation rights before the IRS. The key distinction is jurisdictional breadth: attorneys hold attorney-client privilege protections recognized under federal common law and codified under IRC §7525 for federally authorized tax practitioners, but federal court litigation rights belong exclusively to attorneys. CPAs and EAs cannot represent clients in Tax Court or federal district court without bar admission. The §7525 privilege, while available to EAs and CPAs for non-criminal tax advice matters, is narrower than the full attorney-client privilege — a distinction explored in attorney-client privilege in tax matters.

Covered vs. non-covered written advice. Not all written communications from a practitioner constitute "covered opinions" triggering heightened §10.37 scrutiny. A brief email confirming a known rule differs from a formal opinion letter that a client will rely upon for a reportable transaction. The 2014 revision removed the formal covered opinion label but preserved the substance: the more significant the potential tax benefit and reliance, the more rigorous the diligence standard the practitioner must meet.

OPR investigation vs. criminal referral. OPR discipline is administrative and civil in character. A finding of willful violation of Circular 230 does not itself constitute a criminal charge, but OPR may coordinate with the IRS Criminal Investigation division when evidence suggests deliberate fraud. The boundary between civil and criminal exposure for tax professionals mirrors the broader framework in civil vs. criminal tax cases.

Unenrolled preparers. Individuals who are not attorneys, CPAs, or EAs may prepare returns but have limited representation rights. Under Revenue Procedure 81-38 and the IRS Annual Filing Season Program (AFSP), unenrolled preparers who complete continuing education may represent clients only during IRS examinations of returns they prepared, and only before IRS personnel — not before Appeals Officers or in collection matters. This limited-scope right does not bring them within the full practitioner obligations of Circular 230 Subparts B and C.

References

• Treasury Department Circular No. 230, Rev. 6-2014 (31 C.F.R. Part 10) — IRS
• 31 U.S.C. § 330 — Regulation of Practice Before the Department — Cornell Legal Information Institute
• IRS Publication 947: Practice Before the IRS and Power of Attorney — IRS
• IRS Office of Professional Responsibility — IRS
• 26 U.S.C. § 6694 — Understatement of Taxpayer's Liability by Tax Return Preparer — Cornell Legal Information Institute
• 26 U.S.C. § 7525 — Confidentiality Privileges Relating to Taxpayer Communications — Cornell Legal Information Institute
• Loving v. IRS, 742 F.3d 1013 (D.C. Cir. 2014) — U.S. Court of Appeals for the D.C. Circuit
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