SOC 1AICPA / FASB / IRScpaVerified 2026-11-12

SOC 1: Third-Party Risk Management (TPRM)

Authoritative Rule Summary (SOC 1)

Under SOC 1 (AICPA / FASB / IRS), third-Party Risk Management (TPRM) establishes the authoritative rules tested on the CPA Exam. A comprehensive guide to the TPRM lifecycle, vendor due diligence, and interpreting SOC reports for the ISC exam. VoraPrep verifies every threshold, worked table, and practice question below against the current CPA Exam blueprint.

SOC Reports: The Auditor's Toolkit

FeatureSOC 1SOC 2SOC 3
PurposeReports on controls at a service organization relevant to a user entity's Internal Control over Financial Reporting (ICFR).Reports on controls relevant to the Trust Services Criteria (Security, Availability, Processing Integrity, Confidentiality, Privacy).A general-use, high-level summary of the SOC 2 report.
AudienceUser entity management and their financial statement auditors.User entity management, regulators, and business partners with sufficient knowledge.The public; often used for marketing purposes.
ContentDetailed description of controls, tests performed by the auditor, and results.Detailed description of controls, tests performed, and results against the Trust Services Criteria.A brief overview with the auditor's opinion but no detailed test results.
DistributionRestricted UseRestricted UseGeneral Use (publicly available)
Test Yourself on SOC 1 in 30 Seconds (No Login)CPA Exam · medium

Apex Financial, a financial services firm, outsources its cloud data processing to a third-party vendor. To comply with industry regulations and protect sensitive customer data, what is the most critical component of the firm's third-party risk management (TPRM) program?

Worked Practitioner Scenario

Worked Example: Selecting a Cloud Payroll Provider

Scenario. Alpha Corp, a nonissuer, needs to select a new cloud-based payroll provider. As the IT auditor, you are tasked with guiding the due diligence process.

  1. Step 1: Planning Alpha's management defines the need: a reliable payroll service that can handle sensitive employee PII (Personally Identifiable Information) and integrate with their HR system. The risk appetite is low; data security is paramount.
  2. Step 2: Due Diligence Two vendors, PayRight and SecurePay, are shortlisted. You request their SOC reports. PayRight provides a SOC 1, Type 2 report with an unmodified opinion. It covers controls relevant to financial reporting. SecurePay provides a SOC 2, Type 2 report, also with an unmodified opinion. It covers the Security and Confidentiality Trust Services Criteria.
  3. Step 3: Analysis & Selection Since Alpha Corp is primarily concerned with the security and confidentiality of PII, not just its impact on financial statements, SecurePay's SOC 2 report is more relevant to their key risks. You review the report and note the section on Complementary User Entity Controls (CUECs), which requires Alpha to implement strong password policies for its employees accessing the system.
  4. Step 4: Contracting & Onboarding Alpha Corp selects SecurePay. The contract explicitly references the SOC 2 report and requires annual updates. During onboarding, Alpha's IT department implements and documents the required CUECs, ensuring their end of the shared responsibility model is met.
Common wrong answer. If you picked the option to select PayRight based on its SOC 1, Type 2 report, you likely focused on the fact that payroll is a core financial process. It's a tempting choice because a SOC 1 report directly addresses internal controls over financial reporting (ICFR), and payroll expenses are a significant line item on the income statement. A candidate might reason that any service affecting financial data requires a SOC 1 report, especially one with a clean, unmodified opinion. However, this misses the primary risk identified in the scenario: the security and confidentiality of sensitive employee PII. A SOC 1 report provides assurance about controls that could affect a company's financial statements, but it does not specifically address broader security and confidentiality controls as defined by the Trust Services Criteria. The SOC 2 report is purpose-built to provide assurance on these non-financial controls, making it the more relevant report for Alpha Corp's stated objectives. Always match the type of SOC report to the specific risks of the third-party service.
Exam Watchouts & Statutory Boundaries

Common CPA Exam Distractors on SOC 1

  • 1Bottom line: On the exam, always match the specific risk presented by the vendor to the appropriate TPRM lifecycle stage and the corresponding level of control evidence required.
  • 2When performing vendor due diligence, use the FRISCO mnemonic to remember the key areas to investigate:
  • 3Financial Stability: Will the vendor be a going concern?
  • 4Regulatory Compliance: Do they comply with relevant laws (e.g., GDPR, HIPAA)?
  • 5Information Security: What is their security posture? Do they have a SOC 2 report?

Frequently Asked Questions: SOC 1

What is the core rule under SOC 1 (Third-Party Risk Management (TPRM))?

Under SOC 1 (AICPA / FASB / IRS), third-Party Risk Management (TPRM) establishes the authoritative rules tested on the CPA Exam. A comprehensive guide to the TPRM lifecycle, vendor due diligence, and interpreting SOC reports for the ISC exam. VoraPrep verifies every threshold, worked table, and practice question below against the current CPA Exam blueprint.

How is SOC 1 tested on the CPA Exam?

Bottom line: On the exam, always match the specific risk presented by the vendor to the appropriate TPRM lifecycle stage and the corresponding level of control evidence required. When performing vendor due diligence, use the FRISCO mnemonic to remember the key areas to investigate:

Where can I practice CPA Exam questions on Third-Party Risk Management (TPRM)?

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.

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Related Statutory & Regulatory Rules

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