EY (Ernst & Young) — SOC 2 audit firm review

Shape the future with confidence

EY is a Big Four professional services firm offering assurance, tax, consulting, and transaction services worldwide. They provide SOC reporting including SOC 2 attestations for service organizations focusing on security, availability, and confidentiality. With deep expertise in complex compliance, EY serves large enterprises across multiple sectors.

Peer review: AICPA peer-reviewed (pass). Firm tier: Big 4.

Services: SOC 1, SOC 2 Type I, SOC 2 Type II, ISO 27001.

Offices: New York NY; Chicago IL; San Francisco CA; Los Angeles CA; Boston MA; Washington DC.

Industries served: Technology, Financial services, Healthcare, SaaS.

Frequently asked questions

What compliance frameworks does EY (Ernst & Young) audit?

EY provides SOC 1, SOC 2 (Type 1 and Type 2), and ISO 27001 attestations through its Assurance practice, serving technology, financial services, healthcare, and SaaS clients. EY's globally coordinated teams handle complex, multi-jurisdiction compliance programs for large enterprises.

How much does a SOC 2 audit from EY cost?

EY's typical SOC 2 engagement ranges from $68,000 to $430,000 depending on scope, organizational complexity, and number of Trust Service Criteria. These ranges are drawn from the verified auditor record. EY does not offer fixed-fee pricing.

Is EY AICPA-licensed and in good peer review standing?

Yes. Ernst & Young LLP is an AICPA-accredited firm and has passed its peer review. EY's 2025 US Audit Quality Report, which documents peer review outcomes, is publicly available on the EY website.

How long does a SOC 2 Type II engagement with EY typically take?

EY's typical SOC 2 Type II engagement is approximately 52 weeks (one full year) end-to-end, per the auditor record. This reflects EY's enterprise-focused engagement model, which typically covers a 12-month observation period and includes extensive client-specific control testing.

What GRC platforms does EY work with?

EY has verified working relationships with Vanta, Drata, Secureframe, and Hyperproof. Enterprise clients using these platforms can organize and share evidence packages with the EY audit team.

What are EY's main alternatives for SOC 2 audits?

EY's most frequently compared alternatives are Schellman, A-LIGN, and BDO USA. For buyers specifically requiring Big 4 brand recognition, Deloitte, KPMG, and PwC are direct peer alternatives. Schellman and A-LIGN deliver comparable technical quality at significantly lower price points.