SOC 1 vs SOC 2: Key Differences and Which You Need

SOC 1 reports on controls over financial reporting (ICFR): they are for service organizations whose service affects a client's financial statements, such as payroll processors, billing platforms, and claims administrators. SOC 2 reports on controls against the Trust Services Criteria (security, availability, processing integrity, confidentiality, and privacy), and it is what most software and SaaS vendors use to prove they protect customer data. Both reports come in Type 1 (control design at a single point in time) and Type 2 (operating effectiveness tested across a 3 to 12 month window), so the report you need depends on what your service touches and what your customers are asking you to prove.

SOC 1 vs SOC 2 comparison table

What is the difference between SOC 1 and SOC 2?

The difference is scope: SOC 1 examines controls that affect your customers' financial reporting, while SOC 2 examines controls that protect the security and privacy of the data and systems you operate. A payroll company that miscalculates tax withholdings creates a financial statement problem, so it needs SOC 1. A SaaS analytics tool that leaks customer records creates a security problem, so it needs SOC 2.

Both audits are performed by a licensed CPA firm and both produce a formal opinion, but they measure against different things. SOC 1 measures the control objectives you define around processes that feed a client's books, tested under SSAE 18. SOC 2 measures your controls against a fixed catalog, the AICPA Trust Services Criteria, where the security category (also called the common criteria) is mandatory and availability, processing integrity, confidentiality, and privacy are added only when they are relevant to your service.

Which SOC report do I need?

You need the report your customers are actually asking for, and that usually maps cleanly to what your service does. If your platform touches money that lands in a client's financial statements, expect requests for SOC 1. If your platform holds customer data and you are selling to security-conscious buyers, expect requests for SOC 2. When you are unsure, ask the prospect's procurement or audit team which report they require before you scope anything.

• You likely need SOC 1 if: you process payroll, run billing or invoicing, administer benefits or claims, service loans, or handle transactions that flow into a client's general ledger and get picked up by their financial statement auditors.
• You likely need SOC 2 if: you are a SaaS, cloud, hosting, or data-processing vendor, and prospects send security questionnaires, ask about encryption and access controls, or block deals in vendor risk review.
• You may need both if: your product both moves financial data into client books and stores sensitive customer data that security teams scrutinize.

For most technology companies selling to other businesses, SOC 2 is the report that unblocks deals. If you are starting there, our SOC 2 compliance checklist walks through the controls auditors expect to see.

What is SOC 3, and how is it different?

SOC 3 is a public, general-use version of a SOC 2 report. It covers the same Trust Services Criteria and the same audit work, but instead of the detailed control descriptions and test results in a SOC 2, it delivers a short summary and the auditor's opinion that you can post on your website or hand to anyone without a nondisclosure agreement. There is no SOC 3 equivalent for financial reporting.

That makes the three reports easy to line up when people ask about SOC 1 vs SOC 2 vs SOC 3. SOC 1 is restricted-use assurance about financial reporting controls. SOC 2 is restricted-use assurance about security and privacy controls, shared under NDA with customers and their auditors. SOC 3 is the marketing-friendly public seal that says a SOC 2 exists, without exposing the internal detail. Most companies pursue SOC 2 first and add SOC 3 only if they want a badge for their trust page.

Do I need both SOC 1 and SOC 2?

Most companies need only one, but some genuinely need both. You need both when your service has two distinct jobs: one that feeds numbers into your clients' financial statements and one that holds sensitive data your customers' security teams review. A benefits administration platform is a common example, because it calculates amounts that hit an employer's books and stores personal health and payroll data.

When you do pursue both, plan them together. There is real overlap in the underlying controls, such as change management, logical access, and vendor management, so a shared control set and evidence collection process keeps you from running two disconnected audits. Companies that build the financial-reporting side of the house well tend to also produce accurate board-ready financial statements, and the same discipline that supports clean books supports a clean SOC 1. Just be clear with your auditor about which controls map to which report so nothing gets double-counted or missed.

What is the difference between SOC 1 Type 1 and Type 2?

A SOC 1 Type 1 report evaluates whether your controls are suitably designed as of a single date, while a SOC 1 Type 2 report evaluates whether those controls also operated effectively across a period, typically 3 to 12 months. Type 1 answers "are the right controls in place today?" Type 2 answers "did those controls actually work, consistently, over time?" The same Type 1 versus Type 2 distinction applies to SOC 2.

Type 1 is faster to obtain and is often used as a first milestone, because it only requires the auditor to confirm design at a point in time. Type 2 carries more weight with customers and auditors, since it involves sampling evidence throughout the review window to prove the controls held up. Many organizations start with a Type 1 to show progress, then move to a Type 2 on their next audit cycle. The mechanics are the same for security reports, which we cover in detail in SOC 2 Type 1 vs Type 2.

Getting from scoping to a report

Whichever report fits, the path is similar: define your controls, assign owners, collect evidence, close gaps found in a readiness assessment, and then bring in a CPA firm for the audit. SOC 1 leans on control objectives you write around financial processes; SOC 2 leans on the fixed Trust Services Criteria. Either way, the work that eats the most calendar time is gathering consistent evidence, which is where purpose-built SOC 2 compliance software earns its keep by mapping controls to evidence and flagging what is missing before your auditor does.

One last practical note: your customers, not a standards body, decide which report you produce. Ask early, scope to what they require, and do not pay for a broader audit than your buyers need. This article is educational and not legal or accounting advice; confirm your specific requirements with a qualified CPA firm.