ISO 27001 Certification: Timeline, Effort, and Overlap with SOC 2

Last updated: September 11, 2025

ISO 27001 is an Information Security Management System (ISMS) certification that demonstrates your organization's commitment to information security. Many customers pursue ISO 27001 alongside or after obtaining SOC 2 Type 2 certification.

What is ISO 27001?

ISO 27001 is similar to SOC 2 and focuses on information security program management. It's particularly valuable for organizations working with clients who specifically require this certification, especially those in Europe or large enterprise clients.

Overlap with SOC 2

If you already have SOC 2 Type 2 certification, there's significant overlap with ISO 27001:

  • 80% overlap between the two frameworks

  • Only about 20% additional effort required if you're already SOC 2 compliant

  • Many controls and policies can be reused with minor modifications

Timeline and Process

The timeline for ISO 27001 certification depends on your current compliance status:

  • If you already have SOC 2: Can potentially be completed in 2-3 months

  • Starting from scratch: Typically 6-12 months

  • Dual certification: Both ISO 27001 and SOC 2 can be pursued simultaneously

Work Required

The certification process involves:

  • Creating or updating policies specific to ISO 27001 requirements

  • Building documentation on your compliance platform

  • Working with certified ISO 27001 auditors

  • Establishing an observation window (typically 3-4 months)

Cost Considerations

Pricing varies based on your organization's size and complexity. Combined ISO 27001 and SOC 2 packages are often available and can provide cost savings compared to pursuing certifications separately.

When to Pursue ISO 27001

Consider ISO 27001 certification when:

  • Clients specifically request it (common with European or large enterprise clients)

  • You want to expand into markets where ISO 27001 is preferred

  • You're already pursuing SOC 2 and want to maximize your compliance investment

Contact your compliance team to discuss timelines, auditor availability, and specific requirements for your organization's ISO 27001 certification journey.