How Australian Companies Should Choose a SOC 2 Audit Firm

The short answer: Australian companies should choose a SOC 2 audit firm that can issue a report under the official AICPA standards, through a US-licensed CPA firm, and deliver the audit with a strong local team in Australian time zones. After that, the factors that matter most are the same ones experienced CTOs everywhere look for: tech stack expertise, a tailored approach, flexible scheduling, responsiveness and year-round support.

For Australian companies, SOC 2 can feel foreign. It is an American framework, built on American professional standards, and most often requested by US and global enterprise buyers. Many Australian founders and CTOs first meet it when a large customer or prospect asks for a report, and they quickly find that the choice of audit firm is less obvious than it looks.

The tension is simple. To meet what US and global enterprises expect, the report usually needs to come from a CPA firm licensed in the United States. But an audit is a service, delivered by people, over many weeks. Having that team close by, in your time zone, makes a real difference to how the audit runs.

Why the AICPA standard matters

SOC 2 is a framework of the American Institute of Certified Public Accountants (AICPA). An official SOC 2 report is an attestation examination performed under the AICPA's attestation standards (SSAE, including AT-C sections 105 and 205), and signed by a licensed, independent CPA firm.

That detail matters for Australian companies because local registration alone is not the licence that counts. An Australian chartered accounting firm cannot issue an AICPA SOC 2 report on the strength of its Australian registration. It needs a US CPA firm licence, either directly or through a US-licensed member firm. Our guide on how to check a SOC 2 auditor's credentials shows how to verify registration, signing CPAs and peer review.

SOC 2 versus Australian alternatives

Australian firms can also issue assurance reports on controls under Australian standards such as ASAE 3150. These are legitimate and useful, and are sometimes offered as an alternative to SOC 2 that reports against the same Trust Services Criteria. But they are not SOC 2 reports under the AICPA standards.

If your customers are US or global enterprises, check what they are asking for. Their security and procurement teams generally expect a SOC 2 Type 2 report signed by a US-licensed CPA firm. A local ISO 27001 certificate or an ASAE report usually won't replace it. For how Type 1 and Type 2 fit together, see SOC 2 Type 1 vs Type 2.

The SOC logo

The AICPA's SOC for Service Organizations logo exists to help companies show they have received a SOC report issued by a licensed, independent CPA. For many buyers, that recognisable mark is a quick signal that the report meets the standard they expect.

Why a local team matters

An audit is a service, not a product. It runs over weeks or months, involves dozens of evidence requests and queries, and depends on how well the audit team works with yours. That makes who delivers it, and where they are, just as important as whose name is on the report.

Same-day answers. A 14 to 16 hour gap with a US-based team means every question waits overnight, and a short query can take days to resolve.

Real-time conversations. Walkthroughs, interviews and clarifications happen in your business hours, not at 7am or 10pm.

Faster support under pressure. When an enterprise deal or due diligence review is waiting on the report, you can reach your auditor the same day. Our guide to getting through enterprise security reviews explains what those reviews look for.

Local context. A local team understands the Australian market, your regulatory environment and how Australian companies sell into the US and globally.

The quality of the service depends heavily on that team. It is the difference between an audit that fits around your business and one your team has to chase across time zones. That is also why the person leading your audit matters most.

Your options as an Australian company

Australian companies generally choose between four types of provider. Each balances the AICPA standard and local delivery differently.

Where Throughline fits

Throughline is unusual in combining both. The company is headquartered in Sydney, with its registered CPA entity in the United States.

That means Australian companies get a local team delivering the audit in their time zone, and a SOC 2 report issued under the AICPA standards by a US-registered CPA firm. The report carries the relevance that US and global enterprises expect, and the service comes from people who are available when you are. See our SOC 2 audit service for how that works.

Five more factors that make a good audit partner

Once you have firms that can issue an AICPA SOC 2 with a local team, the next question is how well they run the audit. First-time buyers often choose on price, assuming a cheaper audit means less work. Experienced CTOs know the real cost is the time their team spends, and that a strong report helps win enterprise deals.

Tech stack expertise. Auditors who know your cloud platform, CI/CD pipeline and identity tools know where evidence already lives. Cloud-native expertise has been a differentiator for years; AI-native is the next one.

A tailored approach. Templated audits push you into a parallel system of evidence produced for the auditor. A tailored, calibrated audit tests the evidence you already produce.

Flexible scheduling. SOC 2 doesn't need a fixed audit week. A good firm lets you work through requests around releases, hiring and launches.

Responsiveness. Slow responses are the most cited reason CTOs change audit firms. For Australian companies, a team in the same time zone is the simplest way to get fast answers.

Year-round availability. Startups change constantly between audits. An auditor you can call year-round helps you understand changes before they become audit surprises, and draws on what peer companies do.

Each of these is covered in depth, with questions to ask, in how CTOs choose the right SOC 2 audit firm.

A scorecard for comparing firms

Use this when you speak to shortlisted firms.

Can an Australian accounting firm issue a SOC 2 report?

Only if it holds a US CPA firm licence, directly or through a US-licensed member firm. Australian registration alone does not allow a firm to issue a report under the AICPA standards.

Is an ASAE 3150 report the same as SOC 2?

No. ASAE 3150 is an Australian assurance standard. It can cover similar controls, but it is not an AICPA SOC 2 report, and US or global enterprise buyers asking for SOC 2 may not accept it.

Do Australian companies need SOC 2?

Australian law does not require it. Companies pursue SOC 2 because US and global enterprise customers ask for it during security and vendor due diligence. See what SOC 2 is really for.

Should an Australian company use a US audit firm for SOC 2?

A US firm can issue the report, but the time difference slows every query and meeting. Many Australian companies prefer a provider that combines US CPA registration with a local team.

Is ISO 27001 or SOC 2 better for Australian companies?

It depends on your customers. ISO 27001 is widely recognised in Australia, Europe and Asia. SOC 2 is usually expected by US enterprise buyers. Many companies selling globally end up with both. Our SOC 2 vs ISO 27001 guide helps you decide.

The bottom line

For Australian companies, choosing a SOC 2 audit firm means getting two things right at once. You need a report issued under the AICPA standards by a US-licensed CPA firm, so it carries weight with US and global enterprise buyers. And you need a team close enough to deliver a responsive, tailored service in your time zone.

Get both, then judge firms on tech stack expertise, a tailored approach, flexibility, responsiveness and year-round support. That combination keeps the audit from taking over your team, and turns SOC 2 into a tool for winning enterprise customers. To talk it through, book an intro call with a senior practitioner.