Rule Atlas
Circular 230: Circular 230 and AICPA SSTS
Under Circular 230 (AICPA / FASB / IRS), circular 230 and AICPA SSTS establishes the authoritative rules tested on the CPA Exam. Master the essential ethical and professional responsibilities for tax practitioners. VoraPrep verifies every threshold, worked table, and practice question below against the current CPA Exam blueprint.
The Two Pillars of Tax Practice Authority
| Feature | Treasury Circular 230 | AICPA Statements on Standards for Tax Services (SSTS) |
|---|---|---|
| Authority | Federal regulations issued by the U.S. Treasury Department | Professional standards issued by the AICPA |
| Applies to | All individuals practicing before the IRS (CPAs, attorneys, Enrolled Agents, etc.) | All AICPA members providing tax services |
| Enforcement | IRS Office of Professional Responsibility (OPR) | AICPA Professional Ethics Division & State Boards of Accountancy |
| Sanctions | Censure, suspension, disbarment from IRS practice, monetary penalties | Admonishment, suspension, or expulsion from AICPA membership |
| Primary Focus | Rules of practice, duties to the tax system, and client representation | Standards for tax positions, tax advice, and procedural matters in a client engagement |
A CPA is preparing the 2025 tax return for a new corporate client, Nexus Solutions. During the engagement, the CPA discovers a material error on the 2024 return, which was prepared by a different firm. The error resulted in a significant understatement of tax liability. According to Treasury Circular 230 and the AICPA Statements on Standards for Tax Services (SSTS), what is the CPA's primary responsibility?
Worked Example: The Aggressive R&D Credit
Scenario: You are a CPA named Alex. Your new client, TechForward Inc., wants to claim a significant Research and Development (R&D) credit. The CFO provides a spreadsheet with project costs, but the descriptions are vague, and some expenses seem more like routine production improvements than true R&D.
- How should Alex proceed under Circular 230 and the AICPA SSTS?
- Step 1: Exercise Due Diligence (Circular 230). Alex cannot simply accept the spreadsheet. The vague descriptions are a red flag. Alex must request more detailed project documentation, technical specifications, and employee time records to substantiate that the activities meet the IRC's specific four-part test for qualified research.
- Step 2: Apply the SSTS Standard for Tax Positions. After further inquiry, Alex determines that only 60% of the claimed costs have a 'realistic possibility' of being sustained. The remaining 40% are aggressive and do not meet this >33.3% threshold.
- Step 3: Consider the 'Reasonable Basis' Alternative. Alex believes the remaining 40% of costs have a 'reasonable basis' (>20% chance) but are not a slam dunk. They are not frivolous but are unlikely to survive an audit without a fight.
Common CPA Exam Distractors on Circular 230
- 1When faced with an ethics scenario on the REG exam, use this four-step framework to find the correct answer.
- 2Step 1: Identify the Governing Standard. Is the question about practice before the IRS (Circular 230), the standard for a tax position on a return (SSTS), or a specific preparer penalty (IRC)? The source of the rule dictates the answer.
- 3Step 2: Pinpoint the Specific Duty. Is the issue about due diligence, a conflict of interest, client records, or an error on a prior return? Isolate the precise ethical obligation at stake.
- 4Step 3: Apply the Rule to the Facts. Match the scenario's facts to the requirements of the standard. For example, if a client refuses to provide documentation, this directly implicates the practitioner's duty of due diligence.
- 5Step 4: Determine the Required Action or Consequence. Based on the rule, what must the practitioner do? Advise the client? Disclose a position? Withdraw? Identify the sanction for failure (e.g., OPR action vs. an IRC penalty).
Frequently Asked Questions: Circular 230
What is the core rule under Circular 230 (Circular 230 and AICPA SSTS)?
Under Circular 230 (AICPA / FASB / IRS), circular 230 and AICPA SSTS establishes the authoritative rules tested on the CPA Exam. Master the essential ethical and professional responsibilities for tax practitioners. VoraPrep verifies every threshold, worked table, and practice question below against the current CPA Exam blueprint.
How is Circular 230 tested on the CPA Exam?
When faced with an ethics scenario on the REG exam, use this four-step framework to find the correct answer. Step 1: Identify the Governing Standard. Is the question about practice before the IRS (Circular 230), the standard for a tax position on a return (SSTS), or a specific preparer penalty (IRC)? The source of the rule dictates the answer.
Where can I practice CPA Exam questions on Circular 230 and AICPA SSTS?
Test yourself instantly with the free playable CPA Exam question on this page, or launch VoraPrep's full CPA Exam adaptive question bank, interactive lessons, and 1:1 exam simulator at voraprep.com/cpa.