Top 10 SOC 2 audit firms in USA
Before we begin with the main blog and discuss the SOC 2 audit firms in detail. Let’s us give you a snippet of the Top 10 SOC 2 audit firms in the USA: CyberSapiens, A-LIGN, Linford & Company, AICPA, Deloitte, PwC, Ernst & Young (EY), KPMG, BDO.
For Software as a Service (SaaS) providers and other service organizations, demonstrating that trust through a SOC 2 (System and Organization Controls 2) audit is becoming less of an option and more of a necessity. A SOC 2 report assures customers that their data is handled securely and with the utmost confidentiality.
Navigating the complex world of SOC 2 compliance requires expert guidance. Choosing the right auditing firm can be the difference between a smooth, efficient audit and a stressful, costly one. This article highlights ten of the top SOC 2 audit firms in the USA, examining their strengths, specializations, and what makes them stand out in a competitive field, so organisations can confidently select a partner that aligns with their compliance goals and business needs.
List of Top 10 SOC 2 audit firms in the USA
1. CyberSapiens: Best SOC 2 Audit Firm in the USA

CyberSapiens is a specialized cybersecurity and compliance firm that distinguishes itself by focusing primarily on SOC 2 audits and related services for startups and small to medium-sized businesses (SMBs).
Unlike larger, more diversified firms, CyberSapiens offers a more tailored approach, often with streamlined processes and competitive pricing designed to meet the unique needs and budget constraints of smaller organizations.
They emphasize practical guidance and support to help companies achieve and maintain SOC 2 compliance efficiently. For organizations seeking a highly focused and cost-effective SOC 2 audit solution, CyberSapiens presents a compelling alternative to larger, more generalist firms.
Services offered by CyberSapiens include:
1. SOC 2 Readiness Assessment
Identifies gaps in current security controls and determines what your business needs to meet SOC 2 requirements.
2. Policy & Documentation Support
Provides customizable, audit-ready policies and procedures tailored to your industry and operations.
3. Automated Gap Analysis
Benchmarks your controls against SOC 2 criteria to highlight risks and improvement areas instantly.
4. Implementation Support
Hands-on guidance in deploying controls, processes, and tools required for SOC 2 compliance.
5. Evidence Collection & Management
Streamlined system for gathering, organizing, and submitting proof for auditors.
5. Internal Audit & Testing
Validates control effectiveness before the external audit to ensure smooth certification.
6. External Audit Coordination
Liaises with certified auditors and manages the entire audit process for a stress-free experience.
7. Continuous Compliance Monitoring
Alerts you to control drift and ensures you remain compliant year-round after certification.
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2. Schellman & Company, LLC
Schellman is one of the largest and most well-respected compliance assessment firms in the US. They are exclusively focused on attestation and compliance, ensuring a high level of expertise in SOC 2 audits.
3. A-LIGN
A-LIGN is a technology-enabled security and compliance partner. They offer a comprehensive suite of services, including SOC 2, ISO 27001, and HIPAA compliance. They provide a platform to streamline the audit process.
4. Linford & Company
Linford & Company is a CPA firm that specializes in SOC audits. They have a strong reputation for providing high-quality audits and excellent client service.
5. AICPA (American Institute of Certified Public Accountants)
While the AICPA doesn’t directly conduct audits, they are the governing body that sets the standards for SOC 2 audits. They offer resources and training for CPAs who perform SOC 2 audits. Using a CPA firm that is actively involved with the AICPA can be beneficial.
6. Deloitte
Deloitte is one of the “Big Four” accounting firms and offers a wide range of services, including SOC 2 audits. They have a global presence and a large team of experienced auditors.
7. PricewaterhouseCoopers (PwC)
Similar to Deloitte, PwC is another “Big Four” accounting firm with a strong reputation and global presence. They offer a comprehensive suite of services, including SOC 2 audits.
8. Ernst & Young (EY)
As another member of the “Big Four,” EY provides SOC 2 audits and other assurance services. They have a global network of professionals and a strong focus on technology and innovation.
9. KPMG
Completing the “Big Four,” KPMG offers SOC 2 audits as part of their broader assurance services. They have a global presence and a strong focus on risk management and compliance.
10. BDO
BDO is a large accounting and consulting firm that provides SOC 2 audits and other assurance services. While not one of the “Big Four,” they are a significant player in the market and offer a strong alternative.
Choosing the Right Firm: Key Considerations
Selecting the right SOC 2 audit firm requires careful consideration of several factors:
1. Experience
Look for a firm with a proven track record of conducting SOC 2 audits for organizations similar to yours.
2. Industry Expertise
Choose a firm with experience in your specific industry.
3. Audit Approach
Understand the firm’s audit methodology and how they will work with your team.
4. Communication
Ensure the firm has clear communication processes and is responsive to your needs.
5. Price
Obtain quotes from multiple firms and compare their fees and services. Don’t solely focus on price; consider the value and expertise the firm provides.
6. Accreditation
Verify that the firm is a licensed CPA firm and is in good standing with the AICPA.
7. References
Ask for references from other clients and check their satisfaction with the firm’s services.
Conclusion
A SOC 2 audit is a critical investment for any service organization that handles customer data. Choosing the right audit firm is essential for a successful and efficient audit.
By carefully considering the factors outlined in this article and researching potential firms, organizations can find a partner that will help them achieve SOC 2 compliance and build trust with their customers.
The firms listed above represent some of the leading providers of SOC 2 audit services in the USA, each with its unique strengths and specializations. Ultimately, the best choice will depend on the specific needs and requirements of the organization.
It’s always recommended to conduct thorough due diligence and speak with multiple firms before making a final decision. Remember that the goal isn’t just to pass the audit, but to genuinely improve your security posture and demonstrate a commitment to protecting customer data.
Summary: Top 10 SOC 2 audit firms in USA
- CyberSapiens
- Schellman & Company, LLC
- A-LIGN
- Linford & Company
- AICPA (American Institute of Certified Public Accountants)
- Deloitte
- PricewaterhouseCoopers (Pwc)
- Ernst & Young (EY)
- KPMG
- BDO
FAQs
1. What exactly is a SOC 2 audit, and why is it important?
A SOC 2 audit is an independent assessment of a service organization’s controls related to security, availability, processing integrity, confidentiality, and privacy. It’s crucial because it demonstrates to customers that you take data security seriously and have implemented robust controls to protect their information. This builds trust and can be a key differentiator in competitive markets.
2. What are the five Trust Services Criteria (TSC) in a SOC 2 audit?
The five TSC are Security, Availability, Processing Integrity, Confidentiality, and Privacy. Security focuses on protecting systems from unauthorized access. Availability ensures systems are available as agreed. Processing Integrity verifies that processing is accurate and timely. Confidentiality protects designated confidential information, and Privacy safeguards personal information.
3. What’s the difference between a SOC 2 Type I and a SOC 2 Type II report?
A Type I report assesses the design of controls at a specific point in time. A Type II report goes further, evaluating the design and operating effectiveness of controls over a period, typically 3-12 months. Type II provides a higher level of assurance because it shows that controls are not only well-designed but also consistently working as intended.
4. How long does a SOC 2 audit take?
The timeline varies depending on the organization’s size, complexity, and preparedness. A Type I audit can take a few weeks to a couple of months. A Type II audit, due to the observation period, typically takes 3-12 months plus the audit time itself. Preparation is key to shortening the timeline.
5. How much does a SOC 2 audit cost?
The cost also varies widely, depending on factors like the scope of the audit, the complexity of the organization’s systems, and the auditor’s fees. Smaller organizations might pay $10,000 – $30,000 for a Type I, while larger, more complex organizations could pay significantly more for a Type II. It’s essential to get quotes from multiple firms.





