27 June 2026

SOC 2 vs HIPAA vs ISO 27001: Which Do You Actually Need?

These three show up in the same sentence in so many RFPs that teams assume they’re interchangeable. They’re not — each one answers a different question, and the asker tells you which one you need.

What each one actually is

SOC 2 — a US attestation, not a certification. An independent auditor reports on the controls of a specific service against the Trust Service Criteria (Security is the baseline; Availability, Processing Integrity, Confidentiality, and Privacy are optional categories). Who asks for it: your customers. If you’re a SaaS or service vendor and an enterprise customer’s procurement asks “do you have a SOC 2 report?”, that’s the ask. There is no regulator making you do SOC 2 — your customers are the regulators.

HIPAA — a US federal law, not a framework you “choose.” If you create, receive, maintain, or transmit protected health information (PHI) as a covered entity or business associate, the Security Rule’s administrative, physical, and technical safeguards are legal requirements — enforced by HHS, with breach penalties. Who asks for it: the law. You can’t negotiate it away, and customers in healthcare will expect evidence that you’re compliant.

ISO 27001 — an international standard for an information security management system (ISMS), certified by an accredited registrar. It’s about the management system: risk assessment, documented controls, internal audit, management review — continuous, not one-shot. Who asks for it: enterprise and OEM customers (especially in Europe, automotive, and industrials), and increasingly as a baseline for vendor trust globally.

A quick decision guide

• Enterprise customers are blocking deals → SOC 2 (Security category) is the default answer in the US.
• You touch patient/health data → HIPAA is non-negotiable; do it because it’s the law, then it also supports everything else.
• OEMs or international enterprise customers require it → ISO 27001 (in automotive, note that some OEMs accept or prefer TISAX at AL2/AL3 as the assessment route — same ISO 27001:2022 core, assessed to the automotive VDA ISA catalog).
• You don’t know yet → start with the one your nearest deal is asking for; the others become much cheaper afterward.

The good news: the evidence overlaps heavily

Here’s the part that saves small teams the most money. The controls underneath all three are cousins:

Do one framework properly — with evidence that’s dated, owned, and organized per control — and a large share of it carries straight over to the second and third. What’s expensive is doing the first one badly in a spreadsheet; what’s cheap is doing it once, in a structure you can reuse.

TinyGRC tracks all of these side by side in Confluence — SOC 2, ISO 27001:2022, HIPAA, PCI, FedRAMP, NIST CSF, NIST 800-53 r5 — so the overlap is visible and the reused evidence is one click away. Free trial on the Atlassian Marketplace.

FAQ

Do I need both SOC 2 and ISO 27001? Often, yes — for different audiences. SOC 2 speaks to US customers’ procurement; ISO 27001 speaks to enterprise/OEM customers and international trust. Because the underlying evidence overlaps heavily, doing one well makes the second a fraction of the work.

Can HIPAA and SOC 2 evidence be shared? Substantially, yes. Access control, logging, incident response, and vendor security evidence maps across both. HIPAA is a legal floor for health data; SOC 2 is an attestation to customers. Keep the frameworks labeled separately (so an auditor sees their own framework) but maintain the evidence once.

Which is harder for a small business? SOC 2 (Security only) is usually the fastest path — one attestation, a defined control set, a clear PBC list. ISO 27001 requires a documented management system and takes longer to stand up (typically 8–12 months from zero). HIPAA’s difficulty depends on how much PHI you touch — it’s as much a legal/process exercise as a technical one.

Previous: Confluence GRC: How to Run Compliance in the Tool You Already Use