BDO
BDO is a top-10 U.S. CPA firm whose assurance practice performs SOC 1 Type 1 and Type 2 examinations for large service organizations, often as part of broader financial-statement and ICFR-related audit relationships.
At a glance
| Headquarters | Chicago, Illinois |
|---|---|
| Founded | 1910 |
| Firm type | National full-service CPA firm (top 10 U.S.) |
| SOC 1 planning range | $30K–$90K (planning estimate (Sept 2026)) |
| Typical fieldwork window | Type 1: 6–12 wk |
| Frameworks (per firm) | SOC 1, SOC 2, SOC 3 |
| Official website | bdo.com |
Best fit
Large service organizations that already work with a national audit firm.
Before you engage
Big-firm process and pricing -- more than a straightforward Type 1 needs.
Questions about BDO
How much does a BDO SOC 1 examination cost?
BDO does not publish SOC 1 pricing -- request a scoped quote. Our planning estimate for national top-10 firm Type 1 examinations is $30K–90K (September 2026).
When does BDO make sense for SOC 1?
When you already work with a national audit firm or need the report to sit inside a broader financial-statement and ICFR audit relationship. Big-firm process and pricing -- more than a straightforward Type 1 needs.
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Examination fees depend on your environment, scope, and readiness. Get comparable quotes from BDO and similar CPA firms.
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Alternatives to BDO
Comparable firms buyers also evaluate -- same buyer type, different trade-offs:
MJD Advisors
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Johanson Group, LLP
Licensed CPA firm focused on security compliance audits · $10K–$30K
Sensiba
Top-75 U.S. accounting and consulting firm · $15K–$45K
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