ISAE 3402 — Assurance Reports on Controls at a Service Organization

ISAE 3402 is used to provide independent assurance on the design and operating effectiveness of internal controls at service organizations, particularly those impacting clients' financial reporting. It enables user entities and their auditors to assess risks related to outsourced services.

ISAE 3402 does not provide a traditional certification; instead, organizations receive an assurance report from an independent auditor. While not mandatory by regulation, ISAE 3402 reports are often required by customers, business partners, or under certain regulatory frameworks for outsourced service providers.

ISAE 3402 applies to service organizations whose controls may impact the financial statements of their clients. Examples include data centers, cloud providers, managed IT services, and payroll processing companies providing services integral to user entities’ financial reporting.

The main concepts are internal controls over financial reporting, evaluated through attestation engagements by independent auditors. The two report types are Type I, which assesses control design at a specific date, and Type II, which assesses both design and operating effectiveness over a period.

Organizations document their internal control environment, gather evidence of operational effectiveness, and undergo independent audits. The process typically involves gap assessments, remediation planning, control mapping, and collection of supporting documentation for auditor examination.

ISAE 3402 is closely aligned with the SOC 1 reporting framework and is often considered the international counterpart. While SOC 1 is commonly used in the United States and based on SSAE 18, organizations outside the US or with international clients typically follow ISAE 3402 guidelines.

To maintain compliance, organizations must continuously operate and monitor their internal controls, update documentation, address control deficiencies, and undergo regular (typically annual) audits. Effective remediation processes and audit readiness practices are crucial for favorable assurance reports.

SmartSuite enables organizations to centralize and manage ISAE 3402 compliance by tracking risks, documenting controls, collecting audit evidence, managing remediation actions, and supporting ongoing audit preparation. The platform streamlines reporting and facilitates collaboration with external auditors, ensuring a comprehensive compliance process.