SSAE 18 Reports vs SOC 2 Type II: Which Audit Do You Actually Need?

If you've been tasked with choosing between an SSAE 18 report and a SOC 2 Type II audit, you're not alone in finding the decision confusing. Both are service auditor reports that assess internal controls. Both are widely requested by customers, partners, and regulators. But they serve different purposes, operate under different frameworks, and carry different costs and timelines.

This guide cuts through the confusion and helps you understand what each audit actually is—and which one your organization genuinely needs.

What Is an SSAE 18 Report?

SSAE stands for Statement on Standards for Attestation Engagements. SSAE 18, issued by the American Institute of Certified Public Accountants (AICPA) in 2017, is the current standard that governs how CPAs perform and report on attestation engagements—including audits of service organizations.

An SSAE 18 report is a formal attestation that a CPA has evaluated a service organization's controls over a specific process or system. The auditor examines the design and operating effectiveness of those controls and issues a professional opinion on whether management's assertions about control effectiveness are fairly stated.

SSAE 18 is a framework. Within it, organizations can pursue different types of reports depending on their needs and the assertions they want to make. SOC 2 is one example of an SSAE 18 engagement type.

What Is a SOC 2 Type II Report?

SOC 2 is a specific type of SSAE 18 engagement focused on service organizations that process, store, or transmit client data or other assets. SOC 2 Type II is the most rigorous version: it requires an audit of controls over security, availability, processing integrity, confidentiality, and/or privacy—evaluated over a minimum observation period (typically 6 months or longer).

The "Type II" designation means the auditor has observed and tested the controls in operation over time, not just reviewed their design. This longer observation period and deeper testing make SOC 2 Type II the gold standard for proving control maturity to customers, particularly in the SaaS, cloud, and fintech sectors.

Learn more about the SOC 2 audit framework and when your organization should pursue it.

Key Differences: SSAE 18 Reports vs SOC 2 Type II

When to Choose an SSAE 18 Report (Non-SOC 2)

A customized SSAE 18 engagement makes sense when:

• You need to attest to custom controls. For example, a merchant payment processor might want to attest to compliance with Payment Card Industry (PCI) controls that don't fit neatly into the SOC 2 framework.
• You serve a niche industry with specific requirements. A healthcare data vendor might need an SSAE 18 report tailored to HIPAA security rules rather than a generic SOC 2 report.
• Your customers have requested a specific assertion. Some contracts specify the exact controls and timeframes they want audited, and a custom SSAE 18 engagement delivers that precisely.
• You need faster results on a limited scope. A point-in-time SSAE 18 audit of a specific system can be completed in 6–8 weeks, much faster than SOC 2 Type II.
• Budget is constrained. If a full SOC 2 audit isn't yet justified by customer demand, a narrower SSAE 18 report can provide some assurance at lower cost.

When to Choose SOC 2 Type II

Pursue SOC 2 Type II when:

• You process, store, or transmit client data. SaaS platforms, cloud providers, hosted services, and managed service providers almost always need SOC 2 Type II.
• Your customers or prospects expect it. SOC 2 has become table stakes for enterprise sales in many markets. Prospects will ask for it; not having it creates friction.
• Regulators or compliance frameworks reference it. Many industry regulations (fintech, healthcare software, payment processing) treat SOC 2 as a benchmark control framework.
• You want broad credibility with multiple stakeholders. SOC 2 Type II is recognized globally and respected by auditors, insurers, and compliance professionals across industries.
• You're ready to invest in control maturity. The 6+ month observation period forces you to operationalize controls consistently, which strengthens your actual security posture, not just your audit report.

The Relationship Between SSAE 18 and SOC 2

Here's the critical insight many organizations miss: SOC 2 Type II is an SSAE 18 engagement. SSAE 18 is the auditing standard; SOC 2 is a standardized, widely-recognized implementation of that standard.

Think of it this way:

• SSAE 18 = the rulebook for service auditor engagements.
• SOC 2 Type II = a specific, pre-defined audit scope within that rulebook.

An auditor conducting a SOC 2 Type II engagement is working under SSAE 18 standards. When the audit is complete, the final deliverable is technically an "SSAE 18 report." But because it follows the SOC 2 criteria, it's labeled and marketed as a "SOC 2 Type II report."

There are other types of SSAE 18 service auditor reports—like SOC 1 (for user-facing controls) and custom attestation engagements—but SOC 2 Type II is the most common and most valued in today's market.

How to Decide: A Simple Framework

Ask yourself these questions in order:

1. Do my customers, regulators, or insurance requirements explicitly ask for an audit or compliance report? If no, you may not need either yet. If yes, proceed to question 2.
2. Is the request specifically for "SOC 2"? If yes, you need SOC 2 Type II. Stop here.
3. Is the request for a custom audit of specific processes? If yes, a tailored SSAE 18 engagement may fit better and cost less.
4. Are you in SaaS, cloud, fintech, or a managed services business? If yes, SOC 2 Type II is the right move even if not yet requested. It will become a customer and sales advantage.
5. Do you want to demonstrate control maturity broadly, or prove compliance with a narrow set of requirements? Broad credibility = SOC 2 Type II. Narrow compliance = custom SSAE 18.

If you're still uncertain about which path suits your organization, reach out to discuss your specific situation. The right choice depends on your industry, customer base, and compliance obligations.

Frequently asked questions

Is SOC 2 Type II required by law?

No. SOC 2 Type II is not a legal requirement in most jurisdictions. However, it is often contractually required by enterprise customers, and many compliance frameworks (HIPAA, PCI DSS, ISO 27001 implementations) treat SOC 2 as a credible proof of control effectiveness. If your customers or contracts require an audit, SOC 2 Type II is often the expected format.

Can I get SSAE 18 certified?

No. SSAE 18 is an auditing standard, not a certification. You cannot be "SSAE 18 certified." What you can do is undergo an SSAE 18 audit and receive a report that attests to your controls. The report itself demonstrates compliance with that standard.

How long does a SOC 2 Type II audit take?

Typically 9 to 15 months from the start of scoping to the issuance of the final report. This includes a 6-month minimum observation period during which the auditor tests controls in operation, plus initial scoping, remediation, and final reporting. A custom SSAE 18 report can be completed in 2 to 3 months if scope is narrow.

Can I switch from SSAE 18 to SOC 2 Type II later?

Yes. Many organizations start with a custom SSAE 18 report to meet immediate needs, then move to SOC 2 Type II as their customer base grows or as compliance requirements shift. The controls and processes you establish for SSAE 18 will inform your SOC 2 audit, so the work is not wasted.