SOC 2 vs. ISO 27001 vs. HIPAA: What’s the Difference (and Which Do You Actually Need)?
If you’ve spent any time researching security compliance, you’ve probably run into all three of these names—SOC 2, ISO 27001, and HIPAA—often in the same sentence, sometimes used almost interchangeably. They’re not interchangeable. Each one serves a different purpose, answers to a different authority, and applies to a different kind of organization. Getting this wrong costs real money: teams routinely spend six figures and a year of engineering time pursuing the wrong framework, only to discover it doesn’t satisfy the customer or regulator they needed to satisfy.
This guide breaks down what each framework actually is, how they compare side by side, and—more importantly—how to figure out which one (or combination) your business actually needs based on who you sell to, what data you handle, and where your customers are located.
What Is SOC 2?
SOC 2 (System and Organization Controls 2) is an audit framework developed by the American Institute of CPAs (AICPA). It’s not a certification in the traditional sense—there’s no plaque or seal. Instead, an independent auditor examines your internal controls against five “Trust Services Criteria”: security, availability, processing integrity, confidentiality, and privacy. Only security is mandatory; the other four are selected based on what’s relevant to your business.
SOC 2 comes in two flavors. A Type I report is a snapshot—it confirms your controls are designed correctly as of a single date. A Type II report is far more valuable and far more commonly requested: it verifies those controls actually operated effectively over a period of time, typically 3 to 12 months. Most enterprise buyers in the US will ask specifically for a SOC 2 Type II report before they’ll sign a contract, especially if you’re handling their customer data in a SaaS product.
SOC 2 is the default expectation in the US B2B SaaS world. If your buyers are primarily American enterprises and your product touches their data, this is usually the first framework you’ll be asked about.
What Is ISO 27001?
ISO 27001 is an international standard for building and operating an Information Security Management System (ISMS)—essentially, a structured, ongoing program for identifying and managing information security risks, not just a one-time audit. It’s published jointly by the International Organization for Standardization and the International Electrotechnical Commission, which is why you’ll sometimes see it written as ISO/IEC 27001.
Unlike SOC 2, ISO 27001 results in an actual certificate, issued by an accredited certification body after a formal audit. That certificate is valid for three years, with lighter “surveillance audits” each year in between to confirm you’re maintaining the system. The framework itself is built around Annex A, a list of 93 security controls spanning access control, cryptography, physical security, supplier relationships, and incident management, among others—you select and justify which controls apply to your business through a formal risk assessment.
Where SOC 2 is largely a US phenomenon, ISO 27001 is recognized and trusted globally. If you sell into Europe, the Middle East, or Asia-Pacific—or you’re a global enterprise vendor managing security across multiple regions—ISO 27001 is often the framework procurement teams expect to see, sometimes instead of SOC 2, sometimes alongside it.
What Is HIPAA?
HIPAA (the Health Insurance Portability and Accountability Act) is fundamentally different from the other two—it’s not an audit framework or a certification at all. It’s a US federal law, enforced by the Department of Health and Human Services (HHS), that governs how organizations handling Protected Health Information (PHI) must safeguard it.
There’s no HIPAA “certificate” you can earn, no accredited body that stamps you compliant, and no fixed audit cycle. Instead, HIPAA compliance is a continuous risk-management posture: conducting regular risk assessments, implementing required administrative, physical, and technical safeguards, signing Business Associate Agreements (BAAs) with any vendor that touches PHI, and being prepared to demonstrate compliance if HHS’s Office for Civil Rights ever investigates a breach or complaint.
If your business creates, receives, stores, or transmits PHI—whether you’re a healthcare provider, a health tech vendor, or simply a SaaS company whose customers happen to be hospitals—HIPAA compliance isn’t optional. It’s a legal requirement, not a competitive differentiator.
Which Framework Do You Actually Need?
The honest answer is: it depends entirely on who your customers are and what kind of data you handle. Here’s how we’d think about it by scenario.
You’re a SaaS company selling primarily to US enterprises.
Start with SOC 2 Type II. It’s the framework US enterprise security teams ask for by default, and most vendor security questionnaires are built around its criteria. If you don’t have it, you’ll likely lose deals to competitors who do—or get stuck answering a 200-question spreadsheet manually every sales cycle.
You’re selling internationally, or your buyers are outside the US.
Prioritize ISO 27001. European and APAC enterprise buyers are often unfamiliar with SOC 2 and will specifically ask for ISO certification. If you’re building a global go-to-market motion, ISO 27001 tends to open more doors per dollar spent than SOC 2 does outside North America.
You handle protected health information in any capacity.
HIPAA compliance isn’t a choice—it’s a legal obligation the moment PHI enters your systems. This applies even if healthcare isn’t your primary market; if even one customer is a covered entity and shares PHI with you, you need a compliant program and a signed BAA with that customer. Note that HIPAA compliance and a SOC 2 or ISO 27001 audit aren’t mutually exclusive—many healthcare technology vendors pursue SOC 2 with the HIPAA-specific criteria mapped in, effectively getting both from one audit engagement.
You’re an early-stage startup with limited budget.
SOC 2 Type I is often the pragmatic starting point—it’s faster and cheaper than Type II, demonstrates that controls are designed correctly, and buys you credibility while you accumulate the operating history needed for a Type II report. Trying to pursue ISO 27001, SOC 2, and HIPAA compliance simultaneously with a five-person team is a fast way to stall all three.
SOC 2 vs. ISO 27001 vs. HIPAA: Side-by-Side Comparison
Here’s how the three stack up across the factors that matter when you’re deciding where to invest first.
| SOC 2 | ISO 27001 | HIPAA | |
|---|---|---|---|
| What it is | A US audit report on internal controls for security, availability, and confidentiality | An international certification for an information security management system (ISMS) | A US federal law protecting health information—not a certification |
| Governing body | AICPA (American Institute of CPAs) | ISO / IEC (international standards bodies) | U.S. Department of Health & Human Services (HHS) |
| Who needs it? | SaaS and tech vendors selling to US enterprise customers | Companies selling internationally or needing a globally recognized standard | Any organization that creates, stores, or transmits protected health information (PHI) |
| Output | SOC 2 Type I or Type II audit report | ISO 27001 certificate, valid 3 years with annual surveillance audits | No certificate—a compliance posture, validated through risk assessments and audits |
| Typical timeline | 3–12 months (Type II requires an observation period) | 6–12 months | Ongoing—no fixed certification timeline |
| Typical cost | $15,000–$60,000+, depending on scope and auditor | $20,000–$80,000+, including certification body fees | Varies widely driven by risk assessment and remediation, not a fixed audit fee |
| Renewal | Annual (for Type II) | Annual surveillance audits, full recertification every 3 years | Continuous—no renewal cycle, but enforcement and audits are ongoing. |
| Geographic relevance | Primarily US-recognized | Globally recognized | US-specific (though similar laws exist elsewhere, e.g., GDPR in the EU) |
Can You Need More Than One?
Yes—and for many companies, especially in regulated industries, that’s the norm rather than the exception. A healthcare SaaS vendor selling to US hospitals and European health systems might reasonably need SOC 2 (for US enterprise deals), HIPAA compliance (because they handle PHI), and eventually ISO 27001 (to unlock international expansion). A financial services platform might need SOC 2 today and add ISO 27001 as it expands into the UK or EU.
The good news is that these frameworks share a large amount of underlying control overlap—access management, encryption, incident response, vendor risk management, and employee security training show up in some form across all three. Organizations that build their security program around a well-documented internal control set, rather than treating each framework as a separate project, generally find that adding a second or third framework takes a fraction of the effort the first one did.
Common Mistakes When Choosing a Framework
- Pursuing a framework because a competitor has it, without checking whether your actual buyers ask for it—wasted budget if your customers never request that specific report.
- Jumping straight to SOC 2 Type II or full ISO certification before validating there’s real customer or deal-stage demand—a Type I report or a documented ISMS-in-progress is often sufficient to unblock early deals.
- Treating HIPAA as a checkbox project instead of an ongoing program—HIPAA has no certificate, so “finishing” it is a misunderstanding of the requirement.
- Choosing an auditor or certification body based on price alone—a rushed or low-quality audit report gets flagged by enterprise security reviewers and can cost you the deal it was meant to win.
- Building the security program around the audit instead of around real risk—controls that exist only to pass an audit tend to decay the moment the auditor leaves.
Frequently Asked Questions
Is SOC 2 required by law?
No. SOC 2 is a voluntary, market-driven standard—no government body mandates it. It’s typically required contractually, because enterprise customers won’t sign a deal without it, not because a law requires it.
Does ISO 27001 certification automatically satisfy HIPAA requirements?
Not automatically. ISO 27001 covers general information security management, while HIPAA has specific requirements around PHI, Business Associate Agreements, and breach notification that fall outside ISO 27001’s standard scope. Organizations often use ISO 27001 as a strong foundation and then map additional HIPAA-specific controls on top of it.
How long does each certification actually take?
SOC 2 Type I typically takes 1–3 months to prepare for and complete. SOC 2 Type II requires an observation period of 3–12 months before the audit itself. ISO 27001 generally takes 6–12 months from kick-off to certificate issuance, depending on organizational size and existing maturity. HIPAA has no completion date—it’s an ongoing compliance program, not a one-time project.
Which is cheaper—SOC 2 or ISO 27001?
Costs overlap significantly and depend heavily on company size, scope, and auditor rates, but SOC 2 Type I audits tend to be the least expensive entry point. Full ISO 27001 certification, including the certification body’s audit fees on top of internal preparation costs, is often somewhat more expensive than a single SOC 2 engagement, though the three-year certificate cycle can make the annualized cost comparable.
Can a small startup realistically get SOC 2 certified?
Yes. SOC 2 scales down reasonably well for small teams, especially starting with a Type I report. The main constraint isn’t company size—it’s having consistent, documented processes for access control, change management, and monitoring in place before the audit period begins.
The Bottom Line
SOC 2, ISO 27001, and HIPAA answer three different questions: SOC 2 tells US enterprise buyers your controls work. ISO 27001 tells the world your security management system meets an international standard. HIPAA tells regulators—and the patients whose data you hold—that you’re legally handling protected health information the way the law requires. Most companies don’t need all three on day one, but understanding which one your actual buyers and legal obligations require, before you commit a year and a six-figure budget to the wrong one, is the highest-leverage compliance decision you’ll make.
Not sure which framework applies to your business, or are you trying to figure out how to sequence SOC 2, ISO 27001, and HIPAA as you scale? We help regulated and high-growth technology teams build compliance programs that hold up under real audits, not just pass them once. Book a 30-minute consultation, and we’ll map out exactly what you need—and in what order.