Explore key ethical obligations, due diligence requirements, and sanctions under Treasury Department Circular 230, the cornerstone regulation governing tax practitioners’ conduct before the IRS.
Treasury Department Circular 230 (often referred to simply as Circular 230) outlines the ethical and practice standards that govern tax professionals who “practice before the Internal Revenue Service (IRS).” These rules ensure that tax practitioners uphold stringent standards of integrity, competence, and fairness when representing clients, ensuring public trust in the U.S. tax system. Circular 230 is issued under the authority given to the Department of the Treasury by 31 U.S.C. § 330. Its enforcement is primarily handled by the IRS Office of Professional Responsibility (OPR).
Within the context of CPA exam preparation covered in Chapter 3: Ethics and Responsibilities in Tax Practice, mastery of Circular 230 is critical. Beyond simply memorizing provisions, CPA candidates are expected to understand how these rules integrate with AICPA’s Statements on Standards for Tax Services (SSTS), state board regulations, and other ethical mandates that govern professional conduct. This section focuses on the critical provisions concerning ethical conduct, due diligence, fees, and sanctions for violation under Circular 230.
Circular 230 ensures that individuals who prepare tax returns or provide tax advice fulfill duties of professionalism, ethics, and competence. Compliance with Circular 230 protects both taxpayers and the integrity of the tax system. Its boundaries extend to attorneys, CPAs, enrolled agents, enrolled actuaries, and a range of other tax professionals “practicing before the IRS.” Practice before the IRS includes preparing documents, filing returns, and corresponding or negotiating with the IRS on behalf of taxpayers.
Many of the provisions in Circular 230 revolve around safeguarding client interests while protecting the IRS and broader public from unscrupulous or incompetent practitioners. Key areas of concern include:
• Ethical conduct requirements.
• Due diligence and accuracy standards in preparing and filing returns.
• Conflict-of-interest standards.
• Restrictions on fees (including contingency fees).
• Obligations around record retention, notifications, and disclaimers.
• Consequences and sanctions for failure to comply.
The overarching principle is that authorized practitioners—also referred to as “tax preparers” or “practitioners”—must conduct themselves in a manner that reflects the seriousness of their responsibilities. From a CPA exam perspective, you will be expected to identify scenarios where violations can lead to censure, suspension, or disbarment.
Circular 230 consists of multiple subparts:
• Subpart A: Rules Governing Authority to Practice
• Subpart B: Duties and Restrictions Relating to Practice Before the IRS
• Subpart C: Sanctions for Violation of the Regulations
• Subpart D: Rules Applicable to Disciplinary Proceedings
• Subpart E: General Provisions
The most frequently tested and discussed provisions for CPA candidates often reside in Subpart B (Duties and Restrictions) and Subpart C (Sanctions). However, it is important to understand at least a broad overview of the entire document.
Below is a simplified Mermaid diagram illustrating the general structure of Circular 230:
flowchart TB A["Circular 230"] --> B["Subpart A <br/>Authority to Practice"] A["Circular 230"] --> C["Subpart B <br/>Duties & Restrictions"] A["Circular 230"] --> D["Subpart C <br/>Sanctions"] A["Circular 230"] --> E["Subpart D <br/>Discipline Proceedings"] A["Circular 230"] --> F["Subpart E <br/>General Provisions"]
Subpart A of Circular 230 clarifies who may practice before the IRS—namely, attorneys, CPAs, enrolled agents, enrolled actuaries, and certain others who meet specific requirements (e.g., enrolled retirement plan agents). This section also details the application and licensing requirements for those seeking to practice before the IRS.
Circular 230 emphasizes that individuals practicing before the IRS must meet competency and ethical standards. Hence, the IRS reserves the right, through the OPR, to deny or restrict practice privileges if the individual violates these standards.
Subpart B is the core section that outlines the day-to-day ethical requirements for practitioners and the restrictions placed upon them. Several key duties and restrictions are featured here:
Practitioners must promptly submit records or provide information requested by the IRS unless the practitioner believes, in good faith, that they are privileged or otherwise exempt from disclosure. Noncompliance or unreasonably delaying a request can be interpreted as a violation.
Due diligence is central to ethical conduct under Circular 230. Practitioners must:
• Exercise reasonable care when giving written or oral advice.
• Ensure that any positions taken on a tax return have a reasonable basis, are not frivolous, and comply with the tax code and regulations.
• Properly address all relevant facts and the applicable law in tax advice or tax return positions.
Notably, a practitioner must not willfully or recklessly sign a return or advise a client to take a position on a return that lacks sound legal or factual grounding.
Example “Due Diligence” Scenario:
A CPA working with a client who owns a small business must exercise due diligence by examining relevant invoices, receipts, employee logs, and other documentation. If the CPA notices discrepancies or incomplete information, they are required to investigate further (within reasonable limits) rather than simply relying on the client’s word.
Circular 230 significantly restricts when and how practitioners may charge contingent fees. Generally, contingent fees are disallowed for original tax returns or refund claims because they may encourage aggressive or unsupportable return positions. Exceptions exist for:
• Representing a client in connection with an IRS examination, challenge, or judicial proceeding.
• Preparing or filing an amended tax return or claim for refund related to an examination.
Circular 230 requires practitioners to avoid conflicts of interest. A conflict arises when:
• The representation of one client is directly adverse to another.
• There is a significant risk that the representation of one or more clients will be materially limited by the practitioner’s responsibilities to another client, a former client, or the practitioner’s own personal interest.
If a conflict arises, the practitioner must obtain written, informed consent from each affected client, and they must reasonably believe they can provide competent and diligent representation to all.
Example “Conflict of Interest” Scenario:
A CPA prepares tax returns for two business partners. If these partners decide to dissolve their business amid a dispute, representing both parties in certain negotiations or audits may create a conflict of interest. The CPA must consider whether continued representation of both is feasible and ethical.
Practitioners must not use false, fraudulent, or coercive statements in advertising their services. Any fee information must be accurate and comprehensive. For written tax advice (including emails, memos, letters, or other forms of guidance), practitioners must apply due diligence in the analysis, ensure that it is not based on unreasonable factual or legal assumptions, and consider all relevant facts.
Practitioners must, upon the request of a client, promptly return any records necessary for that client to comply with tax obligations. Even if a fee dispute exists, the practitioner’s retention of these records cannot unreasonably impede the client’s compliance with federal tax filing obligations.
Although not explicitly enumerated in older versions of Circular 230, best practices guidance within the publication encourages practitioners to:
• Communicate clearly with clients, establishing the facts and legal significance.
• Advise clients of the importance of accurately and honestly reporting income, deductions, and credits.
• Act fairly and with integrity in all dealings with the IRS and clients.
• Regularly update knowledge and skills by engaging in continuing professional education.
Subpart C sets forth the potential sanctions the IRS can impose. These sanctions may be applied if a practitioner fails to comply with Subpart B or demonstrates disreputable conduct. Sanctions range in severity:
“Disreputable conduct” can include criminal convictions, misappropriation of funds, failing to file personal or client tax returns, knowingly giving false statements to the Treasury, or forging or altering documents.
Real-World Enforcement Example:
A CPA who repeatedly files frivolous returns on behalf of clients, or who knowingly claims phony deductions, may face disciplinary action ranging from suspension to permanent disbarment. Additionally, if they have engaged in unethical practices such as misrepresentation of credentials or acceptance of illegal contingent fees, the IRS OPR may impose fines and other penalties.
Circular 230 dedicates Subpart D to the procedures of disciplining a practitioner who has allegedly violated any of its provisions. This subpart discusses:
• How complaints are filed and investigated.
• The role of the Administrative Law Judge (ALJ).
• The nature of hearings and discovery, rules of evidence, and burden of proof.
• The issuance of decisions and orders.
From a CPA exam standpoint, detailed procedural rules under Subpart D are less commonly tested. However, it is important to recognize that an accused practitioner is entitled to a hearing adjudicated by an impartial judge and has the right to be represented. The IRS must demonstrate that a violation has occurred to warrant sanctions.
Subpart E includes definitions, effective dates, references, and other clarifications. Students preparing for the CPA exam seldom need to memorize these technical elements in detail. However, understanding definitions early in the document—such as who qualifies as a “practitioner” and “recognized representative”—is critical to interpreting the rest of the requirements.
It can be helpful to explore realistic scenarios to see how Circular 230’s provisions apply in practice:
Inaccurate Tax Return Advice
• Scenario: A CPA fails to verify or critically analyze a multitier real estate partnership’s reported rental expenses, leading to a major understatement of income.
• Analysis: The CPA may be found to have violated Circular 230 due diligence requirements, particularly if no corresponding justification or evidence for the expenses was requested or reviewed.
Unreasonable Fee Structure
• Scenario: An enrolled agent charges a 30% contingency fee for preparing an original tax return, promising the client to “only pay if you get a hefty refund.”
• Analysis: Circular 230 generally disallows contingent fees for original returns. This arrangement could constitute a violation of Subpart B’s fee restrictions.
Conflict of Interest with Multiple S Corporations
• Scenario: A tax practitioner provides annual S corporation compliance work for two partial owners. When the owners become engaged in a dispute over a buy-out, the same practitioner is asked to represent each shareholder in negotiations and potential litigation with the IRS regarding alleged underreporting of income for prior years.
• Analysis: Without obtaining informed written consent from each client, and confirming the ability to provide competent representation, this scenario would present a prohibited conflict of interest under Circular 230.
Sanctions and Disbarment
• Scenario: A CPA is convicted of intentionally misappropriating a client’s tax payments.
• Analysis: This likely represents disreputable conduct under Subpart C. The IRS OPR would initiate proceedings to disbar the individual from practicing before the IRS due to breach of trust and ethical responsibilities.
Tax professionals should proactively maintain compliance with Circular 230 by implementing best practices in their daily work:
• Establish robust internal controls: Document due diligence steps for each return prepared or each piece of written advice given, including the factual and legal basis.
• Keep up-to-date: Engage in continuing education programs that address changes in tax law, IRS guidance, and relevant court decisions.
• Implement conflict-of-interest checks: Use an intake or client screening procedure to identify potential conflicts of interest among clients or prospective clients.
• Maintain clear communication: Use engagement letters or retainer agreements that describe the scope of the engagement, including fees charged.
• Retain records properly: Keep organized documentation to support all positions taken on behalf of a client.
Adopting such protocols not only safeguards practitioners from Circular 230 sanctions but also builds trust and credibility with clients and the broader public.
Although Circular 230 is the primary federal-level regulation for tax practitioners, professionals are typically subject to multiple layers of regulation:
AICPA Statements on Standards for Tax Services (SSTS)
The AICPA SSTS addresses client confidentiality, tax return positions, errors in prior returns, and other ethical obligations. While SSTS focuses on CPAs specifically, both SSTS and Circular 230 share common objectives—accurate return filing, integrity with clients, and cooperation with taxing authorities.
State Boards of Accountancy
CPAs must also comply with their respective state boards’ codes of conduct. Violations of Circular 230 may trigger state-level disciplinary measures, which could include suspension or revocation of a CPA license in that jurisdiction.
General Business and Contract Law
Ethical principles in general business law, including contract and agency law (see Chapter 7: Agency and Chapter 8: Contracts), may intersect with these ethical requirements. For instance, failing to correctly handle client funds could also be a breach of contract and fiduciary duty under state law.
Overreliance on Client Representations
If a tax practitioner overly relies on a client’s statements without verifying supporting documents (particularly for high-risk areas such as charitable contributions or business deductions), they can inadvertently violate the due diligence standard.
Neglecting to Obtain Written Consents for Potential Conflicts
Practitioners commonly disregard conflict-of-interest protocols, mistakenly believing that long-standing client relationships exempt them from formal documentation. Circular 230 requires explicit, informed, and written consents.
Misinterpretation of “Reasonable Basis”
A frequent area of concern is incorrectly determining the “reasonable basis” or “substantial authority” for a tax position. CPAs must stay abreast of case law, IRS rulings, and Treasury Regulations relevant to client issues to avoid Circular 230 violations.
Ignoring Advertising Restrictions
Using unsubstantiated language like “guaranteed IRS acceptance” or “audit-proof returns” in promotional materials can result in OPR scrutiny. Circular 230 prohibits false or misleading advertising.
• Start with the major themes: Focus first on Subpart B’s duties and restrictions, then move to Subpart C to understand sanctions.
• Review real-life disciplinary cases: This can help you remember the standards’ practical applications.
• Compare to AICPA SSTS: Understand how the SSTS parallels or supplements Circular 230.
• Use mnemonics: For example, “FACC” (Fees, Advertising, Conflict, Conduct) can help you recall major areas of compliance.
• IRS Office of Professional Responsibility: Official Publications on Circular 230
• Treasury Department Circular No. 230: https://www.irs.gov/tax-professionals/circular-230
• AICPA Statements on Standards for Tax Services (SSTS)
• State Boards of Accountancy Codes of Conduct
• Relevant Court Decisions in Tax Ethics Cases
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