What does SOC 1 stand for?

SOC 1 stands for System and Organisation Controls 1. Learn what it assesses, Type 1 vs Type 2 differences, who needs it, and how it compares to SOC 2.

SOC 1 stands for System and Organisation Controls 1. It's an independent audit report, issued under the framework of the American Institute of Certified Public Accountants (AICPA), that examines a service organisation's internal controls over financial reporting (ICFR). If your organisation processes transactions, manages payroll, or handles any data that feeds into a client's financial statements, a SOC 1 report is how you prove those controls are working.

The full definition, according to the AICPA: a SOC 1 report is "an examination of controls at a service organisation that are likely to be relevant to user entities' internal control over financial reporting." In plain language, it tells your clients' auditors that you have the right financial controls in place, and that those controls have been independently verified.

Where SOC 1 comes from

SOC 1 didn't appear from nowhere. It replaced the older Statement on Auditing Standards No. 70 (SAS 70), which had been the standard since 1992. When SAS 70 was retired in 2011, the AICPA introduced SSAE 16, which was itself superseded by SSAE 18 in 2017. SOC 1 audits today are conducted under SSAE 18 (AT-C Section 320).

The reason for the overhaul was straightforward: SAS 70 was an auditing standard, not an attestation standard, and it was being used in ways it wasn't designed for. The SOC framework brought cleaner definitions, clearer scope, and a proper distinction between financial-reporting controls (SOC 1) and operational/security controls (SOC 2).

What a SOC 1 report actually assesses

A SOC 1 focuses on Internal Controls over Financial Reporting (ICFR). The scope is defined by the service organisation itself, in consultation with its auditor, based on what's most relevant to clients' financial statements.

Typical control areas include:

• Transaction processing accuracy, ensuring data entered is complete, valid, and correctly processed
• Access controls, who can view, change, or approve financial data
• Change management, how system changes are authorised and tested before going live
• Data backup and recovery, protecting financial data from loss or corruption
• Segregation of duties, preventing a single person from controlling an entire transaction cycle

These control objectives aren't prescribed by the AICPA. Your organisation defines them based on the financial risks your clients face. The auditor then tests whether those controls are suitably designed and, in a Type 2 engagement, whether they're actually operating effectively over time.

SOC 1 Type 1 vs Type 2: what's the difference?

This is where a lot of people get confused, so here's a clear breakdown.

Type 1 is a point-in-time assessment. The auditor looks at your controls on a specific date and confirms they are suitably designed. Think of it as a snapshot. It answers: "Are the right controls in place today?" A Type 1 report typically takes two to three months from start to finish, including preparation.

Type 2 covers a period of time, usually six to twelve months. The auditor tests not only whether controls were designed correctly, but whether they actually operated effectively throughout that period. This is the report most enterprise clients and their auditors want to see, because it demonstrates consistent performance rather than a one-day snapshot.

According to I.S. Partners, a SOC 1 Type I examination normally takes one to three months, while a Type II takes six to twelve months. Most organisations start with a Type 1 to establish a baseline, then move to Type 2 in the following cycle.

You can find a deeper breakdown of the two formats in this guide to SOC 1 Type I vs. Type II.

Who asks for a SOC 1 report, and who needs one?

The request typically comes from the finance or procurement team at a client company, often prompted by their own external auditors. If you're a service provider and your work touches anything in a client's books, expect to be asked.

Common use cases include:

• Payroll processors, payroll amounts flow directly into client financial statements
• Cloud-hosted billing or invoicing platforms, revenue recognition depends on accurate processing
• Third-party administrators (TPAs) for employee benefits, pension and benefits figures appear in annual accounts
• Loan servicers and trust departments, financial institutions outsourcing asset management
• SaaS platforms that handle financial transactions on behalf of clients

A useful rule of thumb: if your service failure could cause an error in a client's financial statements, you likely need a SOC 1. If your service doesn't touch financial reporting but does handle sensitive data, a SOC 2 report is probably the more relevant standard.

SOC 1 vs SOC 2: the key differences

The audit process: what to expect

A SOC 1 audit follows a predictable path once you know what's coming.

Step 1: Scope definition. Work with your auditor to identify which systems and processes are in scope. This means mapping the services you provide and identifying which controls could affect your clients' financial statements.

Step 2: Readiness assessment. Before the formal audit, a gap analysis flags any controls that are missing, poorly documented, or unlikely to pass testing. This is the stage to fix problems, not discover them during the audit.

Step 3: Control documentation. Every control objective needs written policies, procedures, and evidence. Auditors test against documentation, so clarity matters here.

Step 4: Audit fieldwork. For a Type 1, the auditor reviews design on a specific date. For a Type 2, they test evidence of control operation across the chosen period, typically through walkthroughs, sample testing, and inspection of records.

Step 5: Report issuance. The auditor's final report includes their opinion, a description of your system, and detailed test results. Reports are typically renewed annually.

You'll find a practical preparation guide in this SOC 1 audit checklist, which covers documentation, evidence gathering, and control requirements in detail.

Frequently asked questions

Do startups need a SOC 1? Not unless your clients' auditors are asking for one. SOC 1 is demand-driven, if none of your current or target clients process SOC 1 requests, it may not be your immediate priority. That said, if you're targeting enterprise clients in financial services, payroll, or benefits administration, the question will come up sooner than you expect.

Is SOC 1 the same as ISAE 3402? They serve the same purpose and share a very similar structure. ISAE 3402 is the international standard issued by the IAASB, while SOC 1 is the AICPA's US equivalent. European organisations often pursue both to satisfy clients in different geographies. Securance, for instance, supports clients in meeting ISAE 3402 requirements alongside SOC 1 through a single streamlined audit process.

How often do you need to renew a SOC 1 report? Most clients expect a fresh SOC 1 report annually. Type 2 reports cover a defined period, so they naturally require renewal to stay current. There's no hard regulatory deadline, but a report older than 12 months will typically raise questions from a client's auditors.

Can you have both SOC 1 and SOC 2? Yes, and many organisations do. The two reports cover different risk areas and speak to different audiences. For a detailed look at how they interact, the Securance guide on whether you need both SOC 1 and SOC 2 is a good place to start.

What's the cost of a SOC 1 audit? Costs vary significantly based on scope, organisation size, and the complexity of your control environment. A Type 1 audit is generally less expensive than Type 2, and first-time audits typically take longer (and cost more) than renewals, since the foundational documentation and readiness work is done upfront.

For organisations looking to manage this efficiently, Securance's Single Audit, Multiple Standards approach covers SOC 1 alongside ISAE 3402 and other frameworks in one process, trusted by over 800 professional firms and SMEs across Europe, with 96% customer satisfaction.