They expertly mapped the overlapping controls between SOC 2 and ISO 27001, which saved us from duplicating work.
Jasreet Kaur B.Silicon Physical Design Engineer · Small-BusinessSOC 2 + ISO 27001 · August 2026
ICFR CONTROL OBJECTIVES · TESTED OVER TIME — THE NET HOLDS
SOC 1 vs SOC 2 -- Deep Comparison
SOC 1 vs SOC 2
Which Attestation Does Your Organization Need?
SOC 1 protects your clients' financial statements. SOC 2 protects their data and systems. This guide breaks down every dimension that matters — governing standards, scope, cost, control categories, industry fit — so you can choose the right report (or both).
SOC 1 is governed by SSAE 18 (AT-C 320) and targets ICFR controls. SOC 2 follows the AICPA Trust Service Criteria across five domains. Organizations like payroll SaaS and payment gateways often need both.
100+SOC 1 engagements supported
300+SOC 2 engagements
5Countries served
SSAE 18 AT-C 320 | AICPA Trust Service Criteria | Last reviewed June 2026
Key Takeaways
- SOC 1 addresses controls over clients’ financial reporting (ICFR), while SOC 2 addresses security, availability, confidentiality, privacy, and processing integrity of systems and data.
- The deciding question: does your service output flow into a client’s financial statements? If yes, you need SOC 1. If no, SOC 2 is the standard ask.
- Organizations like payroll SaaS or payment gateways often need both reports — SOC 1 for ICFR obligations and SOC 2 for enterprise security due diligence.
- A coordinated dual-attestation engagement can save 25–35% compared with running SOC 1 and SOC 2 as separate, uncoordinated audits.
Dimension by Dimension
Side-by-Side Comparison
SOC 1 and SOC 2 serve fundamentally different audiences. The table below breaks down the nine dimensions that matter most when deciding which report your organization needs.
| Dimension | SOC 1 (SSAE 18 / ISAE 3402) | SOC 2 (Trust Service Criteria) |
|---|---|---|
| Primary Purpose | Controls relevant to user entities’ Internal Control over Financial Reporting (ICFR). Ensures the service organization does not distort its clients’ financial statements. | Controls for security, availability, processing integrity, confidentiality, and privacy of customer data. Ensures the service organization safeguards systems and data broadly. |
| Governing Standard | SSAE 18 (AT-C Section 320) in the US and ISAE 3402 internationally. Prescribed by the AICPA and IAASB respectively. | AICPA Trust Service Criteria (TSC) mapped to the 2013 COSO framework. The attestation standard is also SSAE 18 (AT-C Section 205). |
| Who Requires It | Clients’ external auditors (the “user auditors”) evaluating financial-statement risk. Procurement teams at banks, funds, and insurers often mandate it contractually. | Enterprise procurement and information-security teams during vendor due diligence. Increasingly a prerequisite for SaaS procurement in mid-to-large enterprises. |
| Scope Definition | Services and processes that could affect the user entity’s financial statements: transaction processing, custody of assets, financial record-keeping. | Systems that store, process, or transmit client data. Scope is defined around the Trust Service Criteria selected (Security is always in scope, while others are optional). |
| Report Types | Type I — design of controls at a point in time. Type II — design + operating effectiveness over a review period (typically 6–12 months). | Type I — design of controls at a point in time. Type II — design + operating effectiveness over a review period (typically 3–12 months). |
| Control Categories | ICFR control objectives defined by management: input controls, processing controls, output controls, access controls related to financial data, and reconciliation procedures. | Five Trust Service Criteria — Security (Common Criteria, always required), Availability, Processing Integrity, Confidentiality, and Privacy. Each criterion maps to specific control points. |
| Industry Fit | Payroll processors, loan servicers, payment processors, benefits administrators, trust companies, fund administrators, claims processors, and any outsourced back-office affecting financials. | SaaS providers, cloud infrastructure, healthcare IT, managed service providers, data centers, HR-tech, legal-tech, and any technology vendor handling sensitive client data. |
| Cost Range | With TCSA, all-in including the CPA examination: USD 4,500–5,500 (₹4–5 lakh). Typical US market rates, CPA firm engaged directly: Type I $20K–$40K (CPA audit fees), Type II $30K–$60K. Implementation consulting adds $15K–$50K depending on complexity. Offshore delivery from India: significantly lower. | With TCSA, all-in including the CPA attestation: USD 2,500–5,000 for Type I and USD 3,000–10,000 for Type II (₹2–3 lakh and ₹3–5 lakh). Typical US market rates when you engage a CPA firm directly: Type I $15K–$30K (CPA audit fees), Type II $25K–$50K, and implementation consulting adds $20K–$60K. SOC 2 tooling (GRC platforms) can add $10K–$30K/year. |
| Audit Frequency | Annual. User auditors expect a fresh Type II report every 12 months aligned to the user entity’s fiscal year-end. | Annual. Enterprise customers expect a current Type II report, and many contracts require renewal within 12 months of the prior period-end date. |
Decision Framework
Do I Need SOC 1, SOC 2, or Both?
The answer depends on what your organization does for its clients and what those clients' auditors or security teams require. Here are the most common scenarios.
Payroll SaaS platform
BothSOC 1 because payroll outputs flow directly into clients’ financial statements (salaries, tax withholdings, accruals). SOC 2 because the platform stores PII, salary data, and SSNs — enterprise HR buyers demand Trust Service Criteria coverage.
Payment gateway / processor
BothSOC 1 for transaction-processing controls that affect merchants’ revenue recognition and settlement accounting. SOC 2 for the security and availability of the API, fraud-detection systems, and cardholder data environment (complements PCI DSS).
Pure SaaS (no financial-data processing)
SOC 2 onlyThe product does not touch clients’ financial statements. Enterprise buyers need assurance that customer data is secure, available, and processed with integrity — exactly what SOC 2 addresses. SOC 1 adds no value here.
Loan servicing company
SOC 1 primarilyLoan-servicing outputs (interest income, principal collections, escrow balances) feed directly into lenders’ financial statements. SOC 1 is required by user auditors. SOC 2 is optional but valuable if the servicer also hosts a borrower-facing portal with sensitive data.
Fund administrator / transfer agent
SOC 1 primarilyNAV calculations, investor allocations, capital calls, and distribution processing all affect investors’ financial statements. SOC 1 Type II is table-stakes for institutional investors’ auditors.
Cloud infrastructure / hosting provider
SOC 2 onlyThe provider does not process financial transactions. Customers care about security, uptime (availability), and data confidentiality. SOC 2 with Security + Availability criteria is the standard ask.
The One-Question Rule
Ask: “Does our service output flow into a client's financial statements?” If yes, you need SOC 1 (and possibly SOC 2 as well). If no, SOC 2 is almost certainly the right report. When in doubt, Tranquility Cybersecurity can run a scoping workshop to determine the right attestation path in a single session.
Control Overlap
Where SOC 1 and SOC 2 Converge
Despite their different objectives, SOC 1 and SOC 2 share substantial control-domain overlap. Organizations pursuing both reports can leverage the same evidence for many of these controls.
Logical Access Management
User provisioning, role-based access, privileged-account controls, access reviews, and MFA. Both reports test whether only authorized personnel can access in-scope systems.
Change Management
Code review, testing, approval workflows, separation of dev/staging/prod, and emergency-change procedures. SOC 1 tests changes to financial-processing applications, while SOC 2 tests changes to all in-scope systems.
Vendor / Third-Party Oversight
Due diligence, contractual obligations, ongoing monitoring, and risk assessments for sub-service organizations. Relevant to both ICFR (e.g., outsourced hosting of financial systems) and Trust Service Criteria (e.g., cloud sub-processors).
Incident Management
Detection, escalation, response, root-cause analysis, and corrective action. SOC 1 focuses on incidents that could affect financial-data integrity, while SOC 2 covers security and availability incidents broadly.
Monitoring & Logging
Centralized logging, SIEM alerts, anomaly detection, and log-retention policies. Evidence of continuous monitoring satisfies both ICFR completeness/accuracy and TSC CC7 (System Operations).
Business Continuity & DR
Backup policies, RPO/RTO targets, failover testing, and disaster-recovery runbooks. SOC 1 tests continuity of financial-processing, while SOC 2 tests the Availability criterion.
Dual-Attestation Strategy
Running SOC 1 + SOC 2 Simultaneously
For organizations that need both reports, a coordinated dual-attestation engagement reduces cost, auditor fatigue, and time-to-report compared with running them sequentially.
40–60%Control OverlapSame evidence satisfies both engagements
25–35%Cost Savingsvs. two separate, uncoordinated audits
1 CycleAligned Audit WindowSingle observation period, two reports
How a Coordinated Dual Engagement Works
- 1
Unified scoping workshop
Map every service to both ICFR control objectives and Trust Service Criteria. Identify controls that satisfy both and controls unique to each.
- 2
Single control-design phase
Draft policies, procedures, and evidence artifacts once. Tag each control with its SOC 1 objective and/or SOC 2 TSC reference.
- 3
Aligned observation period
Run both Type II observation windows concurrently (e.g., Jan 1 – Dec 31). The same operating-effectiveness evidence feeds both reports.
- 4
Coordinated CPA engagement
The independent CPA firm tests overlapping controls once and maps findings into both reports. Non-overlapping controls receive separate testing.
- 5
Two reports, one remediation cycle
Any exceptions identified are remediated once. Management responses are tailored to each report’s audience (user auditors for SOC 1, security teams for SOC 2).
Important: Tranquility Cybersecurity serves as the implementation and advisory partner. The attestation itself is performed by an independent CPA firm to maintain auditor independence as required by AICPA professional standards.
Proof
In their words.
Quotes verbatim from G2. Company names added where the client confirmed them.
Instead of simply providing generic templates or checklists, their team took the time to understand our environment and requirements.
Anand .Market Risk Analyst · Mid-MarketCompliance readiness · September 2026
The team’s willingness to work with us and ease of communication.
sam v.CEO · Small-BusinessSOC 2 Type I + ISO 27001 · August 2026
They delivered the project with speed, accuracy, and cost-effectiveness.
Maneet P.Mid-MarketSOC 2 · August 2026
My only regret is that we didn’t engage them sooner in our compliance journey, which would have saved us even more time.
Mahesh Raju C. · XonarSmall-BusinessSOC 2 · GRC · August 2026
They were always responsive and willing to go the extra mile whenever we had questions or needed guidance.
Chandan J. · DsiderSmall-BusinessSOC 2 Type I · August 2026
Managing the auditor relationship on our behalf was especially valuable — it took a lot of pressure off our internal team.
Achyut B.Senior Software Engineer · Small-BusinessSOC 2 + ISO 27001 · September 2026
Their focus on ensuring that we were genuinely audit-ready rather than simply completing documentation.
Ravi V.Founder & CEO · Mid-MarketSOC 2 Type II · August 2026
The guidance was not generic or simply based on a standard checklist — they suggested practical approaches that made sense for our business.
Verified UserInternational Trade and Development · Small-BusinessSOC 2 + ISO 27001 · September 2026
What I like best is the hands-on support and clear guidance throughout the SOC 1 and SOC 2 process.
Sai Sudha S. · ExcersSmall-BusinessSOC 1 + SOC 2 · September 2026
SOC 1 vs SOC 2 -- Frequently Asked Questions
Straight answers from the team that has supported 100+ SOC 1 and 300+ SOC 2 engagements.
What is the fundamental difference between SOC 1 and SOC 2?
SOC 1 evaluates controls relevant to user entities’ Internal Control over Financial Reporting (ICFR). It answers the question: could this service organization distort my financial statements? SOC 2 evaluates controls against the AICPA Trust Service Criteria — Security, Availability, Processing Integrity, Confidentiality, and Privacy. It answers: is this vendor protecting my data and systems? Different audience, different controls, different purpose.
Can a single organization need both SOC 1 and SOC 2?
Yes, and it is common. A payroll SaaS company, for example, processes salary disbursements that directly affect clients’ financial statements (SOC 1 territory) while also storing sensitive employee PII that enterprise HR buyers want protected (SOC 2 territory). Payment processors, benefits administrators, and fund administrators frequently hold both reports.
Which governing standard applies to SOC 1?
In the United States, SOC 1 is governed by SSAE 18, specifically AT-C Section 320 ("Reporting on an Examination of Controls at a Service Organization Relevant to User Entities’ Internal Control Over Financial Reporting"). Internationally, the equivalent standard is ISAE 3402, issued by the International Auditing and Assurance Standards Board (IAASB).
Which governing standard applies to SOC 2?
SOC 2 is governed by the AICPA Trust Service Criteria (TSC), which map to the 2013 COSO Internal Control — Integrated Framework. The attestation engagement itself follows SSAE 18 AT-C Section 205 ("Examination Engagements"). The five Trust Service Criteria — Security, Availability, Processing Integrity, Confidentiality, and Privacy — define the control points the CPA firm tests.
Who reads a SOC 1 report vs. a SOC 2 report?
SOC 1 reports are primarily consumed by user auditors — the external auditors of the service organization’s clients who need assurance that outsourced processes do not introduce material misstatement risk. SOC 2 reports are consumed by enterprise procurement teams, chief information security officers (CISOs), and vendor-risk-management functions during due diligence.
Are SOC 1 and SOC 2 reports public?
No. Both SOC 1 and SOC 2 reports are restricted-use documents, typically shared under NDA. SOC 1 reports go to user entities and their auditors. SOC 2 reports go to existing and prospective customers, regulators, and business partners. Neither is listed in a public registry. A SOC 3 report (a derivative of SOC 2) is the public-facing alternative, but it lacks the detailed control descriptions and test results.
Does SOC 1 cover security controls?
SOC 1 covers security controls only to the extent they are relevant to ICFR. For example, logical access controls preventing unauthorized modification of financial data are in scope. However, SOC 1 does not systematically evaluate security, availability, or privacy the way SOC 2 does through the Trust Service Criteria. If your clients need broad security assurance, SOC 2 is the right report.
How much does it cost to get SOC 1 and SOC 2 together?
A coordinated dual-attestation engagement typically costs 25–35% less than running two separate engagements. Indicative US market rates for CPA firms quoting directly: SOC 1 Type II CPA fees ($30K–$60K) + SOC 2 Type II CPA fees ($25K–$50K) with a bundled discount. These are typical market list prices, not Tranquility Cybersecurity’s, whose SOC 1 and SOC 2 prices are all-in. Implementation consulting fees are also lower because overlapping controls (access management, change management, monitoring) are designed once. Tranquility Cybersecurity offers offshore advisory delivery that further reduces the consulting component.
How long does a dual SOC 1 + SOC 2 engagement take?
If starting from scratch, plan for 4–6 months of implementation work followed by a 6–12 month Type II observation period. The two observation windows run concurrently, so you do not double the calendar time. Total timeline from kickoff to two issued Type II reports: approximately 12–18 months. Organizations with mature controls can accelerate this significantly.
Can Tranquility Cybersecurity issue SOC 1 and SOC 2 reports?
No. SOC 1 and SOC 2 attestation reports can only be issued by a licensed, independent CPA firm. Tranquility Cybersecurity serves as the implementation and advisory partner — we handle scoping, gap analysis, control design, policy documentation, evidence preparation, and CPA coordination. The attestation itself is performed by an independent CPA firm to maintain auditor independence as required by AICPA professional standards.
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