IRC § 6694AICPA / FASB / IRScpaeacmacfpVerified 2026-11-12

IRC § 6694: Ethical Guardrails: Mastering SSTS and Tax Preparer Responsibilities

Authoritative Rule Summary (IRC § 6694)

Under IRC § 6694 (AICPA / FASB / IRS), ethical Guardrails: Mastering SSTS and Tax Preparer Responsibilities establishes the authoritative rules tested on the CPA Exam. Navigate the critical ethical landscape for tax practitioners by mastering the AICPA Statements on Standards for Tax Services (SSTS), understanding the hierarchy of tax position standards, and learning how to handle client errors and avoid preparer, verified against VoraPrep's CPA Exam blueprint.

Current Statutory Thresholds & Limits in Effect

IRC §179 / OBBBA §70302 · Tax years beginning after Dec 31, 2024
IRC §179 Immediate Expensing Maximum & Phase-Out
$2,500,000 max ($4,000,000 phase-out threshold)

Dollar-for-dollar reduction above $4,000,000 placed in service; limited to taxable income from active trades or businesses.

Key Standards for Tax Positions: A Comparison

StandardConfidence LevelPrimary Application
Frivolous< 5-10%Never acceptable. Patently improper.
Reasonable Basis> 20%Avoids §6694 penalty if position is disclosed.
Realistic Possibility~33.3% (1 in 3)SSTS No. 1 Standard for undisclosed positions.
Substantial Authority~40%Avoids §6694 penalty for undisclosed positions.
More Likely Than Not> 50%Required for tax shelters and certain other transactions.
Test Yourself on IRC § 6694 in 30 Seconds (No Login)CPA Exam · medium

A CPA is preparing a client's federal income tax return and is evaluating a tax position that is uncertain but not frivolous. According to the AICPA Statements on Standards for Tax Services (SSTSs), under which of the following circumstances may the CPA sign the return taking this position?

Worked Practitioner Scenario

Worked Example: Applying SSTS No. 6 (Knowledge of Error)

Scenario: You are a CPA preparing the 2026 tax return for XYZ Corp. While reviewing the prior year's depreciation schedule, prepared by another firm, you discover that a $200,000 asset placed in service in 2025 was incorrectly expensed entirely under §179. The asset was not eligible, resulting in a material understatement of tax in 2025.

  1. Step 1: Identify the Error and Your Obligation. You have discovered a material error in a prior return. Under SSTS No. 6, your primary duty is to the client, not the IRS.
  2. Step 2: Inform the Client. You must promptly notify the CFO of XYZ Corp. of the error. This communication should explain the nature of the error (improper §179 deduction), the potential consequences (back taxes, interest, and penalties), and your professional recommendation.
  3. Step 3: Recommend Corrective Action. Your recommendation must be to file an amended 2025 corporate tax return (Form 1120-X) to correct the depreciation and pay the additional tax.
  4. Step 4: Evaluate the Client's Response. If the client refuses to amend, you must consider the impact on the current year's return (e.g., incorrect beginning basis for depreciation) and your professional relationship. You cannot knowingly perpetuate the error.
Therefore, if the client refuses to amend the 2025 return, the CPA's only ethical path under SSTS No. 6 is to consider withdrawal to avoid association with a tax return they know to be incorrect.
Exam Watchouts & Statutory Boundaries

Common CPA Exam Distractors on IRC § 6694

  • 1When faced with an ethics scenario on the REG exam, use this systematic approach to find the correct answer:
  • 2Step 1: Identify the Governing Standard. Is the question about an AICPA member's professional conduct (SSTS), practice before the IRS (Circular 230), or a potential tax penalty (Internal Revenue Code)? The source of the rule dictates the consequence.
  • 3Step 2: Pinpoint the Core Issue. What is the specific ethical dilemma? Is it a questionable tax position, discovery of a client error, use of estimates, or reliance on incomplete client data?
  • 4Step 3: Apply the Correct Rule. Match the issue to the standard. For a tax position, apply the 'realistic possibility' test (SSTS No. 1). For a discovered error, apply the 'inform client, recommend correction' rule (SSTS No. 6).
  • 5Step 1: Identify the Error and Your Obligation. You have discovered a material error in a prior return. Under SSTS No. 6, your primary duty is to the client, not the IRS.

Frequently Asked Questions: IRC § 6694

What is the core rule under IRC § 6694 (Ethical Guardrails: Mastering SSTS and Tax Preparer Responsibilities)?

Under IRC § 6694 (AICPA / FASB / IRS), ethical Guardrails: Mastering SSTS and Tax Preparer Responsibilities establishes the authoritative rules tested on the CPA Exam. Navigate the critical ethical landscape for tax practitioners by mastering the AICPA Statements on Standards for Tax Services (SSTS), understanding the hierarchy of tax position standards, and learning how to handle client errors and avoid preparer, verified against VoraPrep's CPA Exam blueprint.

How is IRC § 6694 tested on the CPA Exam?

When faced with an ethics scenario on the REG exam, use this systematic approach to find the correct answer: Step 1: Identify the Governing Standard. Is the question about an AICPA member's professional conduct (SSTS), practice before the IRS (Circular 230), or a potential tax penalty (Internal Revenue Code)? The source of the rule dictates the consequence.

Where can I practice CPA Exam questions on Ethical Guardrails: Mastering SSTS and Tax Preparer Responsibilities?

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