What Is Circular 230 in Plain English? The Rules Every Tax Preparer Signs Up For
The short answer: Circular 230 is the U.S. Treasury Department’s rulebook (Title 31, Code of Federal Regulations, Part 10) governing everyone who practices before the IRS — attorneys, CPAs, Enrolled Agents, and AFSP participants. In plain English, it requires you to be diligent and competent, to tell clients about their errors, to keep their information moving honestly between them and the IRS, to avoid conflicts of interest and unreasonable fees, and to never take return positions you know are baseless. Break the rules and the IRS Office of Professional Responsibility can censure, suspend, or disbar you from practice — and impose monetary penalties.
- Circular 230 is enforced by the IRS Office of Professional Responsibility (OPR) — a separate office from the audit and collection functions.
- Every AFSP participant personally consents to Circular 230’s Subpart B duties as a condition of the Record of Completion.
- Sanctions range from censure to suspension to disbarment from IRS practice, plus monetary penalties.
- Failing to file your own tax returns is itself disreputable conduct under §10.51 — preparers get disciplined for this every year.
§1 What Circular 230 Is — and Who It Covers
Formally, Circular 230 is Treasury Department regulation 31 CFR Part 10, “Regulations Governing Practice before the Internal Revenue Service.” It has been the profession’s rulebook in some form since 1921, and it applies to anyone who “practices” before the IRS: attorneys, CPAs, Enrolled Agents, enrolled retirement plan agents, enrolled actuaries — and, in a limited way, non-credentialed preparers who hold an AFSP Record of Completion.
The document is organized into five subparts. Two of them do almost all the work in daily practice: Subpart B (your duties and restrictions) and Subpart C (what happens when you violate them). The rest cover who may practice, how disciplinary proceedings run, and general provisions.
§2 The Duties That Matter Day-to-Day (Subpart B)
SUBPART B — THE WORKING PREPARER’S TRANSLATION
| Section | What It Says, in Plain English |
|---|---|
| §10.20 — Information to the IRS | When the IRS lawfully asks for records or information, respond promptly — don’t stonewall. |
| §10.21 — Client errors | If you discover a client’s error or omission on a filed return, you must tell the client promptly and explain the consequences. (You are not required to tell the IRS.) |
| §10.22 — Due diligence | Check your facts. Make reasonable inquiries when client information looks incorrect, inconsistent, or incomplete. |
| §10.27 — Fees | No unconscionable fees, and contingent fees are prohibited for most return preparation. |
| §10.28 — Client records | Return a client’s own records when they ask — even if there’s a fee dispute. |
| §10.29 — Conflicts of interest | Don’t represent conflicting interests without informed, written consent from everyone affected. |
| §10.35 — Competence | Have the knowledge, skill, thoroughness, and preparation the matter requires — or get help, or decline. |
| §10.37 — Written advice | Base written tax advice on reasonable assumptions and all relevant facts — not on the odds of getting audited. |
§3 The Return-Position Rules: §10.34 in Plain English
Section 10.34 is the line between aggressive-but-defensible and sanctionable. You may not sign a return, or advise a position, that you know (or reasonably should know) lacks a reasonable basis, is an unreasonable position under the preparer-penalty statute, or is a willful or reckless understatement. You also may not advise a client to take a frivolous position, or to submit anything to the IRS intended to delay or impede tax administration.
Practically, §10.34 is why you cannot file a “draft-quality” return to beat a deadline, why placeholder figures are a personal liability, and why “the client insisted” is not a defense — the duty runs from you to the system, not just to the client. It works hand-in-hand with the preparer penalties in IRC §6694, which attach to you personally.
§4 What Gets Preparers Disciplined (§10.51)
Section 10.51 lists “disreputable conduct” — the conduct that gets practitioners censured, suspended, or disbarred by OPR. The recurring real-world triggers:
- Not filing your own federal tax returns or evading your own taxes — the single most common self-inflicted discipline case.
- Giving false or misleading information to the Treasury or its officers.
- Criminal convictions involving dishonesty or breach of trust.
- Misappropriating client funds (including refund checks).
- Directly contacting a represented taxpayer’s employees to circumvent their representative.
Before every filing season. Your own returns and payment obligations must be current. OPR treats a preparer’s personal noncompliance as seriously as client-facing misconduct — check your own house first.
§5 What the AFSP Consent Actually Commits You To
When you complete your AFSP CE and renew your PTIN, the IRS requires you to affirmatively consent to the duties in Circular 230 Subpart B and §10.51 before it issues your Record of Completion. That checkbox is a real commitment: it makes the duties above personally enforceable against you, in exchange for limited representation rights and your directory listing.
The consent step is also the most commonly forgotten piece of the AFSP — completed hours with no consent produce no Record. Our PTIN renewal walkthrough covers exactly where the checkbox lives and when to click it.
Complete 18-Hour AFSP Bundle (with AFTR)
The ethics portion covers Circular 230 duties with practical scenarios — plus your AFTR and federal tax law hours in one enrollment, reported to the IRS for you.
§6 FAQs
Does Circular 230 apply to me if I only prepare returns and never represent anyone?
If you hold an AFSP Record of Completion, yes — you consented to Subpart B. Even without it, the practical standards (due diligence, return positions) mirror the preparer-penalty rules in the tax code that apply to every paid preparer, so the safe assumption is that Circular 230’s standards are your standards.
If I find an error on a client’s past return, do I have to report it to the IRS?
No. Under §10.21 your duty is to promptly notify the client and explain the consequences. The decision to amend belongs to the client — but if they refuse to correct a material error, you should consider whether you can continue the engagement.
What is the Office of Professional Responsibility?
OPR is the independent IRS office that enforces Circular 230. It investigates referrals, negotiates sanctions, and publishes disciplinary actions. It is separate from the audit and collections functions — and from the criminal investigation division.
Where do the 2 ethics hours in my CE requirement come from?
Both the AFSP (18 or 15 hours) and EA renewal (72 hours per cycle) require ethics hours specifically covering Circular 230 and federal tax practice standards — general business ethics courses do not qualify. See the full AFSP hour breakdown and EA CE requirements.
Tax IQ Academy is an IRS and CTEC approved provider of continuing education for tax professionals, offering AFSP, AFTR, and EA exam prep courses covering federal tax law, ethics, and practice management.