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home / guides / soc 2 vs iso 27001

SOC 2 vs ISO 27001: which do you need?

Two standards, one decision. Here is how to pick the right one for your startup based on who you sell to.

Last reviewed June 2026 · by traztech, security & compliance for startups
Short answer

If your buyers are mostly US companies, start with SOC 2: it is the default expectation for SaaS selling into the US. If you sell into Europe, the UK, the Middle East, or APAC, ISO 27001 often carries more weight. The two share most of their underlying controls (roughly 80% overlap), so many companies do SOC 2 first and add ISO 27001 later without starting over.

The numbers

What the research says about soc 2 vs iso 27001

The figures that shape the short answer above. Where they come from is cited in the sections that follow.

~80%
control overlap between the two
US
SOC 2 is the default
Global
ISO 27001 is the default

What each one actually is

SOC 2 is an attestation report produced by a licensed CPA firm under AICPA standards. It describes your controls and, for Type II, confirms they operated over a window. You share the report under NDA with customers who ask.

ISO 27001 is an international certification issued by an accredited certification body. You build an Information Security Management System (ISMS), get audited against the standard, and receive a certificate that is recognized worldwide.

The differences that matter

The practical differences come down to format and geography. SOC 2 gives you a detailed report; ISO 27001 gives you a certificate plus a Statement of Applicability. SOC 2 is renewed annually; ISO 27001 runs on a three-year cycle with annual surveillance audits. SOC 2 is requested most by US enterprises; ISO 27001 is expected more often in international, government, and EU deals.

How to choose

Let your sales pipeline decide. Look at the security questionnaires and procurement requirements your actual prospects are sending. If they ask for SOC 2, do SOC 2. If they ask for ISO 27001, or you are selling into regions where it is the norm, prioritize that.

If you are pre-revenue and unsure, SOC 2 Type I is usually the faster way to unblock your first US enterprise deals, and the controls you build transfer directly to ISO 27001 later.

Doing both

Because the control sets overlap so heavily, running both is far less than double the work. Most of the policies, access controls, encryption, logging, and vendor management you build for one satisfy the other. Teams selling globally often end up with both, sequenced rather than simultaneous.

SOC 2 vs ISO 27001 at a glance

SOC 2 ISO 27001
Origin US (AICPA) International (ISO/IEC)
Output Attestation report Certificate + Statement of Applicability
Issued by Licensed CPA firm Accredited certification body
Cycle Annual Three-year, with annual surveillance
Expected by US enterprise buyers EU, UK, government, global buyers
Best first step for US-focused SaaS startups Globally-focused or EU-focused startups

Frequently asked

Do I need both SOC 2 and ISO 27001?

Not usually at the same time. Pick the one your buyers ask for first. Because the two standards share most of their controls, you can add the second later without rebuilding your program, which is what companies selling into both US and international markets typically do.

Is ISO 27001 harder than SOC 2?

They are comparable in effort. ISO 27001 is more prescriptive about having a formal management system (the ISMS), while SOC 2 is more flexible about how you meet the criteria. Neither is dramatically harder; the right choice is about which one your customers recognize.

Which is cheaper, SOC 2 or ISO 27001?

Costs are in a similar range and depend more on scope and company size than on the standard itself. SOC 2 Type I is often the cheapest entry point. Over a multi-year horizon the total cost of each is broadly comparable.

Will a SOC 2 report be accepted in Europe?

Sometimes, but ISO 27001 is more widely recognized in the EU and UK, and some European buyers and public-sector procurement will specifically ask for it. If Europe is your main market, lead with ISO 27001.

Can the controls transfer between them?

Yes. The underlying security controls overlap heavily, so policies, access reviews, encryption, logging, change management, and vendor management built for one largely satisfy the other. That is why doing both is far less than twice the work.

Related

Walk every ISO 27001 control yourself

traztech Workspace has all 93 Annex A controls and 25 ISMS clauses (4-10) of ISO 27001 written in plain English, with what the standard asks for, what to do about it, and somewhere to attach the proof. You answer them, it scores you, and nothing is locked behind an upgrade.

No credit card, no trial clock, no locked features. We make money when someone wants help closing the gaps, not from the Workspace.

traztech Workspace Other GRC platforms
Licence cost $0. Free forever, no card, no paid tier $7,500 to $50,000 a year, on an annual contract
Control library, evidence register, policy templates, risk register, vendor questionnaires, readiness scoring Included Included
What it costs inside an engagement with us $0. You need a workspace either way Unchanged. The subscription sits on top of the fee
What it does to your audit quote $11,000 off a five-figure quote on one engagement, for a documented readiness position Nothing. The audit firm prices your readiness, not your tooling

Pricing in the right column is what compliance automation platforms are publicly reported to charge; none of them publish a number, so treat it as a range rather than a quote. The $11,000 came off the audit firm's own number once the readiness position was documented (the engagement). Where a paid platform is the better buy, and the fuller comparison, is on the Workspace page.

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Track record

Who is actually doing the work

5
Published CVEs, including a CVSS 9.1
76
Controls taken from nothing to a passed SOC 2 Type II
Zero
Exceptions on that Type II report

Published vulnerability research

Five published CVEs. CVE-2024-45163 (CVSS 9.1) is a flaw in the Mirai botnet itself, which gave defenders a way to shut down attacker infrastructure. CVE-2026-42626 takes HP ENVY 5000 printers offline from any unauthenticated device on the same network.

A SOC 2 Type II built from nothing

At Humera, a venture-backed US security company, Jacob built the compliance programme in-house from nothing: no report, no policies, no documented controls. It ended in a Type II attestation across 76 controls with zero exceptions, on a team of 15.