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ISAE 3402

ISAE 3402 and ISAE 3000
Assurance for Service Organisations

ISAE 3402 and ISAE 3000 support third-party assurance reports used by your customers and their auditors. Basenorm centralises the control description, design and operating effectiveness evidence, auditor collaboration and readiness tracking in one place.

Control Description and Scoping

Define service commitments, system description and control objectives, and map them to the Unified Control Library for consistency across frameworks.

  • System description and services in scope
  • Control objectives or trust criteria
  • Subservice organisations and carve-outs
  • Complementary user entity controls
  • Mapping to ISO 27001, SOC 2 and sector frameworks

Control Objectives

Service Organisation
CO-1Logical Access Controls
8 test proceduresOperating Effectively
CO-2Change Management
6 test proceduresOperating Effectively
CO-3Data Processing Integrity
5 test proceduresOperating Effectively
CO-4Backup & Recovery
4 test proceduresIn Testing
Financial Reporting Link

Controls mapped to client ICFR objectives

ISAE 3402 Type 2 control matrix

Assurance Scope

ISAE 3402

Financial Reporting

  • ICFR Controls
  • User Entity Controls
  • SOC 1 Equivalent
ISAE 3000

Non-Financial

  • IT Controls
  • Compliance
  • ESG/Sustainability

Report Type Selection

Type 2

6-12 months

Type 1

Point-in-time

Financial vs non-financial assurance

Type 1 and Type 2 Evidence

Collect design and operating effectiveness evidence throughout the reporting period, with automated pulls from connected systems and reviewer workflows.

  • Type 1 evidence as at a specific date
  • Type 2 evidence over the reporting period
  • Automated evidence collection from SaaS and infrastructure
  • Sampling, testing and exception tracking
  • Auditor-ready workspace with traceable evidence

Auditor Collaboration and Reporting

Work with your service auditor in a structured workspace with request lists, deliverables and issue tracking, so reports are produced efficiently and consistently.

  • Structured auditor request lists and deliverables
  • Issue tracking and remediation workflows
  • Management assertions and assurance letters
  • Reuse of evidence for SOC 2 and ISO 27001
  • Continuous readiness between reporting cycles

Auditor Report

1Management Assertion
2Control Description
3Testing Results
4Auditor Opinion
Expected Opinion

"Controls were suitably designed and operating effectively throughout the period..."

23

Controls Tested

22

Effective

1

Exception

Ready for a smoother ISAE engagement?

Join service organisations using Basenorm to prepare, evidence and deliver ISAE 3402 and ISAE 3000 reports with continuous readiness.

Frequently Asked Questions

Explore frequently asked questions about ISAE 3402 and related compliance topics.