SOC 2 vs ISO 27001: which does an Australian SaaS company need?

What is the difference between SOC 2 and ISO 27001?

ISO/IEC 27001 is a certification that your information security management system (ISMS) meets an international standard; SOC 2 is an auditor’s report on your security controls against criteria set by the American Institute of CPAs (AICPA). One certifies how you manage security as a system. The other gives a detailed opinion on specific controls, which customers read.

	ISO/IEC 27001	SOC 2
What it is	International standard for an ISMS, current edition ISO/IEC 27001:2022 (with one amendment)	Attestation examination under AICPA standards, against the Trust Services Criteria
Who issues it	A certification body, ideally accredited by an IAF recognised accreditation body such as JAS-ANZ in Australia and New Zealand	A licensed CPA firm
Output	A certificate, usually public, naming the scope	A detailed report, typically shared under NDA
What is tested	That the ISMS meets the standard’s clauses, with risk based selection of Annex A controls	The system description and controls for the criteria in scope: security, plus optionally availability, processing integrity, confidentiality and privacy
Variants	One certificate; scope varies	Type 1 (design, point in time) or Type 2 (design and operating effectiveness over a period)
Cycle	Certificate with annual surveillance audits and periodic recertification	Commonly a new Type 2 report each year
Strongest in	Australia, Europe, Asia, government adjacent buyers	United States, and buyers with US style vendor risk programs

Two points of detail matter in 2026. ISO’s own guidance says to refer to certification with the full reference, “certified to ISO/IEC 27001:2022”, and the transition from the older edition has finished, so a certificate to the 2013 or 2017 version is out of date. And the AICPA published exposure drafts of proposed 2027 Trust Services Criteria on 26 October 2026, so SOC 2 criteria are likely to change for reports covering periods from 2027 onward.

Which do Australian buyers ask for?

Australian buyers commonly recognise both. ISO 27001, as an international standard certified by locally accredited bodies, tends to be the more familiar name to Australian procurement teams, while SOC 2 Type 2 is the usual request wherever the buyer runs a US style vendor risk program. Neither is required by Australian law. They show up in procurement as a way to shortcut a long security questionnaire. Use this matrix to decide which to pursue first.

Your situation	Get first	Why
Selling mostly to Australian and New Zealand mid market and enterprise	ISO/IEC 27001	Widely recognised, public certificate, local accredited certification bodies
US customers or US headquartered buyers are a big part of the pipeline	SOC 2 Type 2	It is the report US procurement teams most commonly request
Selling into European or Asian enterprises	ISO/IEC 27001	International standard with broad recognition
APRA regulated buyers (banks, insurers, super funds)	Either, plus evidence for CPS 234	APRA’s standard puts the onus on the regulated entity to assess your controls; a report or certificate helps but won’t answer everything
Federal government	IRAP and Essential Eight first	Agencies work from ASD’s ISM and their own policies; see below
Early stage, no enterprise deals yet	Neither yet	Build the controls and evidence now; certify when a deal needs it

If an enterprise prospect sends a security questionnaire, ask early whether ISO 27001 or a SOC 2 Type 2 would let you skip it. The answer tells you which to buy.

For APRA regulated buyers, our guide to APRA CPS 234 and AI explains what they must assess in a service provider. Fintechs receiving bank data under the Consumer Data Right have separate security controls and assurance reporting set by the CDR Rules.

What do they cost and how long do they take?

Expect a first year cost in the tens of thousands of dollars for either, with ISO 27001 costing more up front and SOC 2 Type 2 costing more each year after. Published 2026 figures, at the time of writing:

Item	Published range	Source
ISO 27001 first year total, small business (5 to 20 staff)	A$27,500 to A$55,000	CertBetter, June 2026
ISO 27001 first year total, medium business (20 to 60 staff)	A$52,000 to A$111,000	CertBetter, June 2026
ISO 27001 certification audit, small business	A$4,500 to A$9,000	CertBetter, June 2026
ISO 27001 annual surveillance, small business	A$3,000 to A$6,500	CertBetter, June 2026
ISO 27001 timeline to initial certification	5 to 9 months	CertBetter, June 2026
SOC 2 Type 1 audit fee, small to midsize company	US$7,500 to US$15,000	Drata, March 2026
SOC 2 Type 2 audit fee, small to midsize company	US$12,000 to US$20,000	Drata, March 2026
SOC 2 all in first year, startup to enterprise	about US$25,000 to over US$200,000	Drata, March 2026
SOC 2 Type 2 observation period	3 to 12 months	Drata, March 2026

Both sources sell compliance products or services, so read the figures as market indications. The audit fee is the smaller part. The larger cost is your team’s time: writing policies, running risk assessments, collecting evidence, fixing gaps, and in many cases a compliance automation platform subscription and consultant support.

A worked timeline for a 30 person SaaS company

This is an illustrative plan, not a quote. It assumes a product already running on a major cloud platform with reasonable practices, and a goal of both frameworks within 18 months.

Month	Activity
1 to 2	Gap assessment against ISO/IEC 27001:2022 and SOC 2 security criteria; agree scope (product, cloud accounts, people)
2 to 5	Write the ISMS: risk assessment, Statement of Applicability, policies; fix control gaps in the platform and the pipeline
5 to 6	Internal audit and management review
6 to 8	ISO 27001 certification audit (stage 1 and stage 2)
6 to 12	SOC 2 Type 2 observation period, reusing the same controls and evidence
13 to 14	SOC 2 Type 2 report issued
12 onward	ISO surveillance audits and annual SOC 2 reports

The overlap is real. Most controls an ISO 27001 auditor checks are the same ones a SOC 2 auditor tests, so doing one first makes the second much cheaper.

What actually happens in each audit?

ISO 27001 certification is a two stage audit of your management system; a SOC 2 examination is a test of your controls against criteria, with a written opinion at the end. Knowing the steps helps you plan staff time, which is where most of the cost sits.

ISO/IEC 27001 certification

1. Define the scope. Which products, locations, teams and cloud accounts are inside the ISMS. A narrow scope is cheaper but must still make sense to the customers who read the certificate.
2. Build the ISMS. A risk assessment method, a risk register, a risk treatment plan, a Statement of Applicability saying which Annex A controls apply and why, and the policies and procedures that support them.
3. Operate it. Run the controls for long enough to produce records: access reviews, supplier reviews, incident logs, training records.
4. Internal audit and management review. The standard requires both before certification.
5. Stage 1 audit. The certification body reviews documentation and readiness.
6. Stage 2 audit. The certification body tests that the ISMS is implemented and effective, samples evidence and raises any nonconformities, which must be closed before the certificate issues.
7. Surveillance and recertification. Annual surveillance audits keep the certificate current, with a full recertification at the end of the cycle.

SOC 2 examination

1. Choose the criteria. Security is always in scope. Add availability, processing integrity, confidentiality or privacy only if customers need them, because each adds testing.
2. Write the system description. A narrative of the services, infrastructure, software, people, procedures and data, against the AICPA description criteria.
3. Readiness assessment. Optional, but most first time companies do one to find gaps before the clock starts.
4. Type 1 or observation period. A Type 1 tests design at a date. A Type 2 needs the controls to operate through an observation period, then the auditor tests samples from across it.
5. Report. The CPA firm issues its opinion, the system description, the controls and test results, and any exceptions. Exceptions don’t automatically mean a failed report, but buyers read them.

How do you choose an auditor or certification body?

Pick on credibility first and price second, because the buyer is the one who has to trust the result. Questions worth asking:

• For ISO 27001, is the certification body accredited for ISO/IEC 27001 by JAS-ANZ or another IAF member accreditation body? An unaccredited certificate may not satisfy an enterprise buyer.
• For SOC 2, is the firm a licensed CPA firm, and are the practitioners who sign the report licensed and peer reviewed? The AICPA has publicly cautioned about quick turnaround SOC engagements.
• Have they audited SaaS businesses on your cloud platform, and do they accept evidence from your compliance platform if you use one?
• What is included: readiness work, stage 1 and stage 2, surveillance years, report drafting, retesting of exceptions?
• Can the same evidence set serve both frameworks if you plan to hold both?

How does the way you build the product affect the audit?

Auditors don’t test intentions; they sample evidence, and engineering practice decides whether that evidence exists or has to be reconstructed by hand. A product built with these habits is much faster to certify:

1. Infrastructure as code. Every cloud resource defined in version controlled templates gives you change history, peer review and a reproducible environment, which covers several change management and configuration controls at once.
2. Every change through a pull request. Required review, linked tickets and automated tests on every merge are the evidence for change control and secure development.
3. Logged, automated deployments. A pipeline that records who deployed what and when, with no manual production changes, answers the most common sampling request.
4. Single sign on and least privilege. Central identity, multi factor authentication and role based access make quarterly access reviews a report rather than a spreadsheet project.
5. Centralised logging and alerting. Retained, tamper resistant logs for production access and security events.
6. Backups that are restored. Scheduled restore tests, recorded, because “we have backups” isn’t evidence.
7. Vulnerability management in the pipeline. Dependency and container scanning with tracked remediation times.
8. Separate environments, no production data in test. This is a frequent finding and an easy one to avoid at build time.
9. A sub-processor register. Every SaaS tool and AI provider that touches customer data, with its own assurance report or certificate on file.

If your product is still being built, these cost very little to include now and a lot to retrofit. Our SaaS development work bakes them in, and the SaaS development cost guide shows where they sit in a budget.

Where do the Essential Eight, ASD Essentials and IRAP fit?

The Essential Eight, ASD Essentials and IRAP are Australian Government frameworks from the Australian Signals Directorate, and they answer different questions from SOC 2 and ISO 27001. They are complementary, not alternatives.

Framework	Owner	What it is	When you’ll meet it
Essential Eight	ASD	Eight mitigation strategies with a maturity model	PSPF Release 2026 still requires Maturity Level Two for covered federal entities; sometimes asked of their suppliers
ASD Essentials	ASD	Principles, actions and domains, published on 15 October 2026 to evolve the Essential Eight	Written mainly for Commonwealth entities, critical infrastructure and large organisations; ASD will advise on transition timeframes
IRAP	ASD	Independent assessment by an ASD endorsed assessor, typically against the Information Security Manual	Selling cloud or software that handles government information
ISO/IEC 27001	ISO and IEC	Certified management system	Enterprise and international procurement
SOC 2	AICPA	CPA attestation on controls	US and US style procurement

An ISO 27001 ISMS is a good home for Essential Eight or ASD Essentials controls: your risk assessment can adopt them, and your auditors will see them as part of the system. ASD says its assessment evidence guide for ASD Essentials references controls from other frameworks that may count as evidence where you have implemented them. IRAP is a separate assessment with its own scope and assessors. Read IRAP explained and our Essential Eight and ASD Essentials guide for software development before you commit to a government roadmap.

When is neither worth it yet?

If no buyer has asked and you have no enterprise deals in the pipeline, put the money into controls, not certificates. Certification makes sense when it unblocks revenue. Before that:

• Build the engineering practices above.
• Write a short security overview document and keep a standard questionnaire response ready.
• Run an independent penetration test before your first enterprise sale.
• Choose cloud providers and sub-processors that already hold ISO 27001 and SOC 2, so you can rely on their reports for the layers they run. If you’re still moving onto the cloud, our cloud migration cost guide covers landing zones built with this evidence in mind.

Then, when the first large deal asks, you are months from certification, not a year.

How AWLabs supports certification projects

AWLabs holds neither SOC 2 nor ISO 27001, and we don’t issue reports or certificates. Our part is the software and the delivery pipeline that produce the evidence: infrastructure as code, reviewed changes, logged deployments, access control, logging, backup testing and vulnerability scanning, documented in a form your auditor or compliance platform can use. We work within your ISMS or control set and with your chosen auditor; compliance and certification remain your organisation’s. Engagements start with a Development Consult, then a paid Discovery Audit that is credited in full against the build, and a fixed price Schedule of Work with three options: The Minimum, The Recommended and The Complete. See our cybersecurity services for security reviews alongside the build.