SOC 1 Scope, Assertions, Materiality, and Subservice Organization Treatment

SOC 1 scope, assertions, materiality, and subservice organization methods.

This chapter covers SOC 1 examinations, which focus on controls relevant to user-entity financial reporting. The important ISC task is to understand how service-organization controls affect financial statement risk and how the report framework communicates that impact.

In This Chapter

How to Use This Chapter

  • Read this chapter when service-organization reporting is being evaluated through a financial-reporting lens.
  • Focus on scope, relevance to user-entity reporting, and subservice treatment.
  • Revisit it whenever an ISC question asks how a service auditor addresses outsourced controls in a SOC 1 setting.

In this section

Revised on Friday, April 24, 2026