System and Organization Controls 1

System and Organization Controls 1 (SOC 1) is an attestation report issued under the AICPA attestation standards that evaluates controls at a service organization that are relevant to user entities’ internal control over financial reporting.

Expanded Explanation

1. Technical Function and Core Characteristics

SOC 1 reports assess the design and, for Type 2 reports, the operating effectiveness of controls at a service organization that could affect user entities’ financial statements. They follow the AICPA Statement on Standards for Attestation Engagements (SSAE) and related guidance. SOC 1 focuses on financial reporting objectives, not general security or privacy controls, unless those controls affect financial reporting.

SOC 1 reports exist in two forms: Type 1, which covers the fairness of management’s description of the system and the suitability of the design of controls at a point in time, and Type 2, which covers both design and operating effectiveness over a defined review period. Independent CPA firms conduct the examinations and issue the reports.

2. Enterprise Usage and Architectural Context

Enterprises use SOC 1 reports to evaluate whether outsourced services, such as payroll processing, transaction processing, or other financially relevant services, support their own internal control over financial reporting. The reports support external financial audits and management’s assessment of internal controls.

Architects and control owners incorporate SOC 1 reports into Third-Party Risk Management (TPRM) workflows, vendor due diligence, and assurance packages for stakeholders. SOC 1 results often map into control frameworks used for Sarbanes-Oxley compliance and related regulatory requirements.

3. Related or Adjacent Technologies

SOC 1 relates closely to System and Organization Controls 2 (SOC 2) and System and Organization Controls 3 (SOC 3) reports, which address controls relevant to security, availability, processing integrity, confidentiality, and privacy rather than only financial reporting. Organizations often pursue SOC 1 together with SOC 2 to cover both financial and nonfinancial control objectives.

SOC 1 engagements intersect with internal control frameworks such as Committee of Sponsoring Organizations (COSO) for financial reporting and with IT control frameworks such as COBIT that describe technology governance and control activities. External auditors may use SOC 1 reports as part of the audit evidence for user entities’ financial statement audits.

4. Business and Operational Significance

SOC 1 reports provide user entities and their auditors with structured, third-party assurance that service organization controls relevant to financial reporting are designed and, for Type 2, operating effectively. This supports compliance with financial reporting regulations and reduces duplicated audit procedures at user entities.

Service organizations use SOC 1 reports to respond to customer assurance requests in a standardized format and to demonstrate the existence and operation of controls that affect customers’ financial reporting. The reports can streamline contracting, oversight, and audit coordination between service providers and their customers.