For SaaS startups and growing tech platforms, demonstrating strong data security practices is essential for building credibility with customers, partners, and investors. This is why many organizations actively seek the best SOC 2 Type II audit firms for software companies to help them achieve and maintain compliance. A SOC 2 Type II report goes beyond a simple snapshot of security controls—it evaluates how effectively those controls operate over time, making it one of the most trusted compliance standards for software companies handling sensitive user data.
However, preparing for a SOC 2 Type II audit can be complex. Consider your company stage (startup vs. enterprise), budget, framework, requirements, and your internal compliance capacity. Big Four firms suit regulated enterprises with large budgets; specialized boutique firms like Schellman, A-LIGN, BARR, and Linford offer comparable rigor at lower cost; integrated platforms like Thoropass work well for technology-forward teams that want automation and audit under one roof.
The best audit firms combine deep expertise in cybersecurity, risk management, and cloud infrastructure with a strong understanding of the SaaS ecosystem. They provide structured audit processes, practical compliance insights, and reliable support that help software companies streamline documentation. In this guide, we highlight the top 12 best SOC 2 Type II audit firms for software companies, focusing on experienced firms known for their transparent audit methodologies, industry reputation, and ability to work closely with modern technology teams.
Deloitte stands as one of the most recognizable names in global professional services, and it brings that same institutional gravitas to SOC 2 Type II audits. As a Big Four firm, Deloitte actively integrates SOC 2 with multiple concurrent frameworks — ISO 27001, NIST, and HIPAA — through its proprietary “SOC 2+” approach, thereby giving software companies the ability to satisfy multiple customer and regulatory requirements in a single engagement. Furthermore, Deloitte deploys dedicated risk advisory teams who specialize in cloud-native environments, making it particularly relevant for SaaS platforms handling regulated data. Additionally, with engagements that typically span six to twelve months for a Type II report, the firm conducts deep-dive readiness assessments, gap analyses, and remediation guidance before the formal attestation begins.
Features
- End-to-end SOC 2 Type I and Type II readiness and attestation services
- SOC 2+ combined framework audits integrating ISO 27001, HIPAA, and NIST standards
- Dedicated risk advisory professionals with cloud and SaaS expertise
- Six to twelve-month operating effectiveness periods with structured milestone tracking
- Global delivery teams capable of supporting multinational software companies
- Integration with enterprise GRC platforms for continuous monitoring
Pricing
Custom/quote-based.
2. PwC
PwC delivers enterprise-grade SOC 2 Type II audits backed by its global network and a technology-enabled delivery model that sets it apart from traditional audit houses. Specifically, the firm actively leverages proprietary digital audit tools to streamline evidence collection and control testing, reducing friction for software companies that operate complex, multi-cloud infrastructure. Moreover, PwC excels at customizable SOC 2+ reporting, allowing clients to align with major frameworks like GDPR, ISO 27001, and PCI DSS in a single coordinated engagement. As a result, its audit teams include dedicated cybersecurity and technology risk specialists, meaning the firm evaluates controls not just from a compliance lens but from a genuine security perspective.
Features
- SOC 2 Type I and Type II reports with six to twelve-month observation windows
- Customizable SOC 2+ framework alignment, including GDPR, PCI DSS, and ISO 27001
- Tech-enabled audit delivery using PwC’s proprietary digital auditing tools
- Dedicated cybersecurity risk professionals are embedded in every engagement
- Global reach with localized expertise across 150+ countries
- Integrated readiness assessments and gap remediation advisory
3. EY (Ernst & Young)
EY combines the depth of Big Four expertise with its EY Canvas digital platform to deliver SOC 2 Type II audits that are both rigorous and highly structured. The firm actively applies a risk-based audit methodology, meaning it concentrates testing on the controls that carry the greatest operational and security significance for a given software company’s environment, rather than applying a one-size-fits-all checklist approach. In addition, EY maintains one of the broadest global footprints of any audit firm, making it particularly valuable for software companies operating across multiple jurisdictions that require simultaneous compliance with local and international frameworks.
Features
- Risk-based SOC 2 Type I and Type II audit methodology for targeted, efficient testing
- EY Canvas digital platform for centralized evidence management and audit tracking
- Global compliance support across 150+ countries with local regulatory alignment
- Integrated privacy and data protection assessment alongside SOC 2 controls
- Dedicated project managers and cybersecurity specialists for each engagement
- SOC 2+ options aligning with GDPR, ISO 27001, HITRUST, and other frameworks
4. KPMG
KPMG brings decades of audit discipline to SOC 2 Type II engagements, complemented by its investment in technology-enabled audit tools that modernize evidence collection and control testing. The firm actively maintains a centralized client portal through which software companies can upload evidence, track audit milestones, and communicate directly with the engagement team, reducing the administrative burden that often plagues complex SOC 2 programs. Additionally, KPMG’s deep bench of information technology and cybersecurity professionals means auditors understand cloud architecture, DevSecOps practices, and modern application security, not just traditional IT controls.
Features
- SOC 2 Type I and Type II attestation with a centralized client audit portal
- Technology-enabled evidence collection reduces manual burden on internal teams
- Specialist IT and cybersecurity professionals are embedded in every engagement
- Cross-border audit coordination for multinational software companies
- SOC 2+ integration with HIPAA, ISO 27001, NIST CSF, and PCI DSS
- Cloud architecture expertise covering AWS, Azure, GCP, and hybrid environments
5. A-LIGN
A-LIGN focuses exclusively on cybersecurity compliance, meaning every auditor on the team lives and breathes SOC 2, ISO 27001, FedRAMP, and HITRUST — without the distraction of broader financial audit work. In particular, the firm actively deploys its proprietary A-SCEND audit management platform, which centralizes evidence collection, document storage, and issue tracking, while integrating natively with leading GRC tools like Vanta and Drata. Consequently, this combination of scale and technology makes A-LIGN uniquely capable of delivering high-quality SOC 2 Type II reports on compressed timelines without sacrificing rigor.
Features
- A-SCEND proprietary audit platform for centralized evidence management and tracking
- Over 31,000 audits completed with 200+ dedicated SOC 2 auditors globally
- SOC 1, SOC 2, ISO 27001, HITRUST, FedRAMP, and PCI QSA under one roof
- 96% client satisfaction rate with a 24-hour response commitment
- Native integrations with Vanta, Drata, and other major GRC platforms
6. Schellman & Company
Schellman dedicates itself exclusively to cybersecurity and privacy assessments, including SOC 2, ISO 27001, FedRAMP, HITRUST, and PCI DSS. This singular focus means clients work with auditors who deeply understand modern application security, cloud infrastructure, and software engineering practices. Notably, Schellman delivers draft SOC 2 reports within three weeks of testing completion and final reports within 30 days, a timeline that few firms can match.
Features
- Fixed-fee audit model providing full cost predictability from engagement start
- Draft SOC 2 reports delivered within three weeks of testing completion
- Exclusive cybersecurity and compliance focus — no financial audit distraction
- SOC 1, SOC 2, SOC 3, ISO 27001, FedRAMP, HITRUST, and PCI DSS capabilities
- Active principal involvement ensuring senior-level oversight on every engagement
- Strong cloud expertise across AWS, Azure, and GCP architectures
7. Baker Tilly
Baker Tilly distinguishes itself by delivering detailed control matrices and gap analyses before formal testing begins, giving clients a clear picture of exactly what they need to remediate to achieve a clean Type II opinion. Furthermore, the firm’s SOC 2+ offering allows software companies to efficiently combine SOC 2 with HIPAA, ISO 27001, HITRUST, or NIST frameworks in a single coordinated engagement, reducing the duplication of effort that plagues multi-framework compliance programs.
Features
- Hundreds of SOC 2 engagements are completed annually by dedicated AICPA SOC specialists
- Detailed control matrices and gap analyses are included in the pre-audit readiness phase
- SOC 2+ option for efficient multi-framework audits, including HIPAA and ISO 27001
- Member of Baker Tilly International for multinational compliance coordination
- Present in 140+ countries with regional expertise and local regulatory knowledge
8. Linford & Company
Linford & Company stands as one of the best SOC 2 Type II audit firms for software companies in the United States. The firm actively enforces a minimum ten-year experience requirement for every auditor on its team, meaning clients always work with seasoned professionals, not junior associates doing supervised work under Big Four branding. Additionally, the firm maintains a strict privacy-first culture, using encrypted collaboration tools and rigorous data handling protocols to protect client information throughout the audit process.
Features
- Minimum ten-year experience requirement for every member of the audit team
- High partner involvement in every engagement, ensuring senior-level quality control
- SOC 1, SOC 2, SOC 3, HIPAA, FedRAMP, HITRUST, and ISO 27001 capabilities
- Privacy-first culture with encrypted collaboration and strict data handling protocols
- Serves clients across all five Trust Services Criteria with a tailored scope
- Remote audit capabilities for distributed software teams globally
9. Grant Thornton
Grant Thornton occupies a compelling middle ground in the SOC 2 audit market, making it one of the best SOC 2 Type II audit firms for software companies seeking Big Four-quality work at a more accessible price point. To support this, the firm actively leverages its proprietary SOC.x platform to conduct more efficient readiness assessments and deliver high-quality attestation reports that enterprise stakeholders trust. Furthermore, with a “test once, apply many” philosophy, Grant Thornton helps software companies complete SOC 2 alongside other compliance frameworks — ISO 27001, SOC 1, and HIPAA — without duplicating evidence collection or testing effort. Additionally, Grant Thornton’s risk advisory specialists bring deep sector expertise across SaaS environments.
Features
- Proprietary SOC.x platform for efficient readiness assessments and audit management
- “Test once, apply many” approach, reducing effort across multiple framework audits
- Global advisory presence with specialized risk and technology assurance teams
- SOC 2, SOC 1, SOC 3, ISO 27001, and HIPAA capabilities from one provider
- Structured gap analysis and remediation guidance before formal attestation
- Mid-market pricing with Big Four methodology and report quality
10. Prescient Security
Prescient Security has carved out a distinctive position in the SOC 2 market by approaching compliance through a cybersecurity lens first, rather than treating it as a pure accounting function. Specifically, the firm actively deploys a risk-based audit approach that customizes testing to each client’s actual threat profile and security posture, thereby avoiding the checkbox mentality that plagues requirement-based audit firms. Furthermore, Prescient’s coverage extends across 25+ frameworks — including SOC 1, SOC 2, ISO 27001, HITRUST, FedRAMP readiness, PCI DSS, GDPR, and CCPA — making it one of the most versatile total compliance providers in the industry.
Features
- Risk-based (not requirement-based) audit approach customized to each client’s threat model
- Coverage across 25+ frameworks: SOC 1/2/3, ISO 27001, HITRUST, FedRAMP, PCI, GDPR, CCPA
- CREST and CSA STAR certified with AICPA peer-reviewed audit status
- Native integration with Vanta, Drata, and Trustero GRC platforms
- Senior auditors across the U.S., EMEA, and APAC time zones for global availability
- AI-supported penetration testing and evidence collection tools
11. BAAR Advisory
BAAR Advisory has rapidly established itself as one of the best SOC 2 Type II audit firms for software companies. The firm actively serves a client base spanning from early-stage startups to Fortune 1000 companies across more than 20 countries, demonstrating remarkable flexibility across company stages and geographies. BARR is among a small number of U.S. firms accredited to perform both SOC 2 audits and ISO 27001 certifications, a dual accreditation that allows software companies to pursue both frameworks through a single trusted provider. Notably, the firm operates on a remote-first model with fixed-rate pricing, giving clients globally consistent service and full cost predictability.
Features
- Dual accreditation for both SOC 2 audits and ISO 27001 certification
- Adaptive audit methodology reduces client effort by approximately 75%
- Reports delivered up to 40% ahead of standard industry timelines
- Fixed-rate pricing model for full cost predictability
- Remote-first structure serving clients across 20+ countries consistently
12. Thoropass
Thoropass takes a fundamentally different approach to SOC 2 Type II audits by combining a compliance automation platform with an in-house audit capability. Thereby eliminating the handoffs and miscommunication that occur when software companies use separate vendors for compliance tooling and auditing. Thoropass claims clients achieve audit readiness 62% faster than the traditional approach, cutting over 950 hours of manual compliance work through its AI-powered automation. Furthermore, the platform supports over 30 frameworks — including SOC 2, ISO 27001, HIPAA, PCI DSS, HITRUST, and GDPR. Therefore, enabling software companies to grow their compliance program without switching vendors as their requirements expand.
Features
- Integrated compliance platform and in-house audit firm — no vendor handoffs
- “Connected Audit” model with auditors engaged throughout the compliance journey
- First Pass AI for automated control testing, evidence collection, and gap identification
- 62% faster audit readiness than traditional approaches, saving 950+ manual hours
- Supports 30+ frameworks, including SOC 2, ISO 27001, HIPAA, PCI DSS, HITRUST, GDPR
- Penetration testing and security assessments are available as add-on services