- What Is Domain 10 and Why Does It Matter
- Domain 10 Topic Breakdown: What You Must Know
- Circular 230: The Backbone of Domain 10
- Preparer Penalties and Due Diligence Requirements
- Privileged Communications and Confidentiality
- Exam Format and How Domain 10 Fits Part 3
- High-Priority Topics the Exam Actually Tests
- Domain 10 Study Schedule
- Frequently Asked Questions
- Domain 10 covers 25% of Part 3 (Representation, Practices, and Procedures), making it the single largest gateway into EA ethics rules.
- Circular 230 governs every topic in this domain - know its duties, restrictions, and sanctions inside out.
- Part 3 has a 70% historical pass rate, but weak ethics knowledge is a common reason candidates miss the scaled passing score of 105.
- Each Part 3 attempt costs $267; you have up to 4 attempts per testing window, so targeted preparation matters financially.
What Is Domain 10 and Why Does It Matter
Domain 10: Practices and Procedures is the opening domain of Part 3: Representation, Practices, and Procedures of the Special Enrollment Examination (SEA). It accounts for 25% of the Part 3 exam - the highest single-domain weight within that part, tied only by Domains 11 and 12 at 28% each. Before a candidate can credibly represent clients before the IRS, they must first understand the professional and ethical framework that governs that representation.
That framework is Circular 230. Domain 10 is, in large part, a deep dive into Treasury Department Circular No. 230 - the regulations that define who may practice before the IRS, what conduct is required, and what penalties attach to violations. Alongside Circular 230, this domain tests preparer penalty provisions under the Internal Revenue Code, due diligence standards, and the scope of privileged tax practitioner communications.
Unlike many credentialing exams that treat ethics as a checkbox, the EA exam treats Domain 10 as foundational infrastructure. You cannot interpret representation rules in Domain 11: Representation Before the IRS or compliance obligations in Domain 13 without first internalizing the rules of conduct established here.
Domain 10 Topic Breakdown: What You Must Know
The IRS SEE Candidate Information Bulletin identifies several major content areas within Domain 10. Here is how they break down conceptually:
Domain 10: Practices and Procedures (25% of Part 3)
Candidates must demonstrate mastery of the professional conduct rules that apply to enrolled agents, attorneys, CPAs, and other practitioners authorized to practice before the IRS.
- Requirements to practice before the IRS and who is authorized to do so
- Treasury Circular 230 - duties and restrictions on practitioners
- Preparer penalties under IRC §6694 (understatement of taxpayer liability) and §6695 (other preparer penalties)
- Due diligence requirements for specific tax benefits (EITC, CTC, AOTC, HOH)
- Privileged communications under IRC §7525
- Sanctions and disciplinary proceedings against practitioners
- Incompetence, disreputable conduct, and disbarment from practice
- Office of Professional Responsibility (OPR) jurisdiction and process
Each of these topic clusters generates multiple exam questions. The exam does not ask you to recite rules in the abstract. Instead, you will be presented with a scenario - a practitioner who failed to respond to an IRS request, a preparer who signed a return without reviewing source documents, or a client who asks a tax professional to keep a communication confidential - and you must identify the correct rule, penalty, exception, or required action.
Circular 230: The Backbone of Domain 10
Treasury Department Circular No. 230 (31 CFR Part 10) governs the practice of representatives before the IRS. Mastery of this document is non-negotiable for Domain 10 success. The key subparts candidates must know in detail include:
Subpart A - Rules Governing Authority to Practice
This subpart defines who may practice, the categories of practitioners (enrolled agents, enrolled retirement plan agents, enrolled actuaries, attorneys, CPAs, and registered return preparers), and the scope of practice for each. A critical distinction for exam purposes: unenrolled return preparers have a limited practice right - they may represent clients only for examinations of returns they prepared and signed, and only before IRS revenue agents, customer service representatives, and examination officers.
Subpart B - Duties and Restrictions Relating to Practice
This is the heaviest-tested subpart. Expect questions on all of the following:
- §10.20 - Information to be furnished: Practitioners must promptly submit records or information lawfully requested by the IRS and may not interfere with any lawful effort to obtain such records.
- §10.21 - Knowledge of client's omission: If a practitioner knows a client failed to comply with a revenue law or made an error on a filed return, the practitioner must promptly advise the client of the noncompliance and the potential consequences.
- §10.22 - Diligence as to accuracy: Practitioners must exercise due diligence in preparing, approving, and filing returns and must not rely on an unreasonable position.
- §10.29 - Conflicting interests: Practitioners generally may not represent clients with conflicting interests unless both clients provide informed written consent.
- §10.30 - Solicitation: Restrictions on false or misleading advertising and specific rules about fee solicitation.
- §10.33 - Best practices: Aspirational standards including communicating clearly with clients and acting fairly with the IRS.
- §10.34 - Standards for tax returns and documents: A practitioner may not sign a return that takes an unreasonable position, nor advise a client to take a frivolous position.
- §10.35 - Competence: Practitioners must have the legal, technical, and ethical competence to provide the services they offer.
- §10.36 - Procedures to ensure compliance: Firms must have procedures in place to ensure compliance with Circular 230.
- §10.37 - Written advice: Standards for providing covered opinions and other written advice on federal tax matters.
Subpart C - Sanctions for Violation
The Office of Professional Responsibility (OPR) administers disciplinary proceedings. Sanctions range from a private reprimand to censure, suspension, or disbarment. Key exam facts: the Administrative Law Judge (ALJ) presides over disciplinary hearings; practitioners may appeal ALJ decisions to the Secretary of the Treasury; expedited proceedings are available for certain clear-cut violations. Practitioners who are disbarred may petition for reinstatement after five years.
Preparer Penalties and Due Diligence Requirements
Domain 10 also requires fluency in IRC preparer penalty provisions - distinct from Circular 230 but often tested alongside it.
| Code Section | Penalty Type | Amount / Threshold | Key Condition |
|---|---|---|---|
| §6694(a) | Understatement - unreasonable position | Greater of $1,000 or 50% of income derived | Preparer knew or should have known position was unreasonable |
| §6694(b) | Understatement - willful or reckless conduct | Greater of $5,000 or 75% of income derived | Willful attempt to understate liability or reckless disregard of rules |
| §6695(a) | Failure to furnish copy to taxpayer | $60 per failure (up to $30,000 per year) | Preparer must provide taxpayer a copy of the return |
| §6695(b) | Failure to sign return | $60 per failure (up to $30,000 per year) | Preparer must sign returns they prepare for compensation |
| §6695(f) | Negotiating a taxpayer's refund check | $545 per check | Preparer may not endorse or negotiate taxpayer's IRS refund |
| §6695(g) | Failure to meet due diligence requirements | $600 per failure | Applies to EITC, CTC/ACTC, AOTC, and Head of Household |
The §6695(g) due diligence penalty deserves extra attention because it covers four distinct credits and filing statuses: the Earned Income Tax Credit (EITC), the Child Tax Credit/Additional Child Tax Credit (CTC/ACTC), the American Opportunity Tax Credit (AOTC), and Head of Household filing status. Preparers must complete Form 8867 (Paid Preparer's Due Diligence Checklist), retain supporting documentation, and apply a knowledge standard to any information provided by the client that appears incorrect or inconsistent.
Key Takeaway
For §6695(g), the IRS holds preparers to a knowledge standard - not just whether they completed the form, but whether a reasonable, well-informed preparer would have questioned the information. Exam questions frequently test whether a preparer did enough given a specific set of client facts.
Privileged Communications and Confidentiality
IRC §7525 extends a limited attorney-client privilege to tax advice provided by federally authorized tax practitioners (including enrolled agents) to their clients. This is a heavily tested area because the privilege has significant limitations that the exam exploits in scenario questions.
What §7525 Covers
- Confidential communications between a federally authorized tax practitioner and a client
- Applies in any noncriminal tax matter before the IRS
- Applies in any noncriminal tax proceeding in federal court
What §7525 Does NOT Cover
- Criminal tax matters - the privilege does not apply in criminal investigations or prosecutions
- Written advice in connection with a tax shelter - explicitly excluded by statute
- State tax proceedings - federal privilege only
- Information that would be considered a crime or fraud
The exam will present fact patterns where a client is under criminal investigation or where the communication relates to a tax shelter and ask whether the §7525 privilege applies. The answer in those scenarios is no - know the exceptions cold.
Exam Format and How Domain 10 Fits Part 3
Part 3 of the SEE contains 100 multiple-choice questions - 85 scored and 15 experimental (unscored). You will not know which questions are experimental. With Domain 10 representing 25% of the exam, you can expect approximately 21 scored questions to draw from Domain 10 content. That is a significant concentration, comparable to an entire short exam section on its own.
The exam is administered at Prometric testing centers through February 28, 2026. Beginning March 1, 2026, PSI Services LLC takes over as the testing provider, with scheduling opening May 1, 2026 and testing available from July 1, 2026. Each attempt costs $267, and candidates may make up to four attempts per testing window. A scaled score of 105 on a 40-130 scale is required to pass, which corresponds to approximately 68-72% correct on scored questions.
The exam is closed book. No reference materials are permitted - Circular 230 must be internalized, not looked up. The testing center provides scratch paper, pencils, and a calculator. The exam is 210 minutes (3.5 hours) with a scheduled 15-minute break after question 50.
If you are also preparing for the earlier parts of the exam, reviewing EA Domain 9: Specialized Returns for Businesses Study Guide 2026 will help you understand how the business tax preparation rules in Part 2 connect to the representation obligations you will encounter in Part 3.
High-Priority Topics the Exam Actually Tests
Based on the IRS SEE Candidate Information Bulletin content specifications, the following represent the highest-density testing areas within Domain 10:
Practitioner Authorization and Scope of Practice
Who can practice, what each category of practitioner can do, and the limits on unenrolled preparers.
- Enrolled agents vs. enrolled retirement plan agents vs. enrolled actuaries
- Limited practice rights for unenrolled preparers - Form 2848 vs. Form 8821
- Requirements to obtain and maintain a PTIN ($19.75 annually)
OPR Sanctions and Disciplinary Process
The Office of Professional Responsibility enforces Circular 230. Candidates must know the disciplinary process and the types of sanctionable conduct.
- Definitions of disreputable conduct under §10.51
- Expedited suspension procedures
- Rights of practitioners in disciplinary proceedings
- Reinstatement procedures after disbarment
Conflicts of Interest and Withdrawal
§10.29 conflicts of interest require careful navigation in exam scenarios involving multiple clients or shifting client interests mid-representation.
- When waiver of conflict is permissible with informed written consent
- When a practitioner must withdraw from representation entirely
- Obligations regarding work product after withdrawal
Practicing targeted scenario questions on these clusters through a quality EA exam practice platform will help you identify which rule variations the exam exploits most frequently.
Domain 10 Study Schedule
Because Circular 230 is a legal document with precise language, it rewards careful reading followed by immediate application to practice questions. The following schedule treats Domain 10 as a two-week intensive before moving on to Domains 11 and 12.
Circular 230 Deep Read + IRC Penalties
- Read Circular 230 Subparts A and B in full - mark every section number and its core rule
- Memorize §6694 and §6695 penalty amounts, thresholds, and triggering conditions
- Complete 30-40 practice questions focused solely on Circular 230 §10.20-§10.37
- Review Form 8867 and understand the four due diligence categories
Sanctions, Privilege, and Scenario Drilling
- Study Circular 230 Subpart C - OPR procedures, types of sanctions, reinstatement rules
- Master IRC §7525 privilege: scope, exceptions (criminal matters, tax shelters), and comparison to attorney-client privilege
- Run timed 25-question Domain 10 mini-exams using a full EA practice test resource
- Review every missed question using the Feynman method - explain the rule aloud before moving on
After completing Domain 10 preparation, transition directly into Domain 11 content, which builds on the practitioner authority concepts established here. Reviewing the full EA Domain 10: Practices and Procedures Study Guide 2026 periodically during your Domain 11 and 12 study will reinforce the ethical framework across all of Part 3.
Frequently Asked Questions
Domain 10 accounts for 25% of Part 3. With 85 scored questions per part, you can expect approximately 21 scored questions drawn from Domain 10 content. An additional 15 experimental questions appear throughout the exam but are unscored and cannot be distinguished from scored ones.
Circular 230 applies to all federally authorized tax practitioners who practice before the IRS, including enrolled agents, enrolled retirement plan agents, enrolled actuaries, attorneys, and CPAs. However, enrolled agents are exclusively credentialed through the IRS, making Circular 230 the primary professional conduct standard for the EA designation.
Section 6694(a) imposes a penalty for taking an unreasonable position - the preparer knew or should have known the position lacked reasonable basis. Section 6694(b) applies to willful or reckless conduct and carries a higher penalty. The key exam distinction is intent and knowledge: (a) is a negligence-based standard; (b) requires willfulness or reckless disregard.
No. The §7525 privilege mirrors attorney-client privilege in scope for noncriminal tax matters before the IRS and in noncriminal federal court proceedings, but it does not extend to criminal matters, tax shelter advice, or state proceedings. Attorney-client privilege is broader. The EA exam frequently tests these distinctions with criminal investigation scenarios.
Passing scores for each part of the SEE are valid for three years. If you pass Part 3 but have not yet passed Parts 1 and 2, you must pass all remaining parts within three years of your earliest passing score or the earlier score will expire and must be retaken.
Ready to Start Practicing?
Domain 10 rewards practitioners who engage with Circular 230 actively - not passively reading, but applying rules to scenarios under timed conditions. Build the exam pattern recognition you need with full-length Part 3 practice tests designed around the actual EA exam format and domain weighting.
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