Best SOC 2 auditors: our top 10 picks (August 2026).

Best for: First-time and multi-framework teams that want the GRC platform and audit coordinated by one vendor.

Why it stands out: Thoropass combines an in-house CPA firm with its own GRC platform and supports SOC 2 alongside ISO, PCI, and HITRUST work. That reduces the handoff between readiness tooling and fieldwork for teams that want one accountable provider.

Not ideal for: The bundled model is less useful if you already have a mature GRC stack or need a traditional national-firm brand.

Sources Official Thoropass site ↗ AICPA peer-review record ↗

Best for: Mid-market and enterprise teams coordinating SOC 2 with ISO 27001, FedRAMP, HITRUST, PCI DSS, or HIPAA.

Why it stands out: 360 Advanced uses a coordinated U.S.-based delivery model across several frameworks. Its related Compass Rose entity is both a FedRAMP-listed 3PAO and an ANAB-accredited ISO 27001 certification body, giving buyers a credible path to keep several assessment tracks under one relationship.

Not ideal for: The SOC report, ISO certificate, and FedRAMP assessment remain distinct deliverables and may use different legal entities, so the proposal should name each issuer and scope.

Sources Official 360 Advanced site ↗ AICPA peer-review record ↗

Best for: Mid-market and enterprise teams combining SOC 2 with FedRAMP, CMMC, ISO, HITRUST, or PCI.

Why it stands out: A-LIGN offers one of the broadest authorization sets in the shortlist and operates at a scale suited to coordinated, multi-framework programs. Its A-SCEND platform also gives larger compliance teams a structured audit-management workflow.

Not ideal for: That breadth and scale usually bring more process and a higher estimated fee than a narrow SOC 2 specialist.

Sources Official A-LIGN site ↗ AICPA peer-review record ↗

Best for: SaaS and technology companies that want a SOC-focused CPA firm with a narrow service model.

Why it stands out: MJD Advisors concentrates on SOC reporting rather than tax or general financial-statement audit work. That specialization can suit buyers who want a smaller firm centered on the attestation they actually need.

Not ideal for: Its public materials show less multi-framework breadth than the larger firms on this list, so confirm adjacent requirements before signing.

Sources Official MJD Advisors site ↗ AICPA peer-review record ↗

Best for: Government, defense, healthcare, and complex enterprises with several high-assurance frameworks.

Why it stands out: Schellman combines SOC reporting with FedRAMP 3PAO, CMMC C3PAO, HITRUST, PCI, and ISO capabilities. Its government and defense credentials make it a strong candidate when customer acceptance depends on more than a standard commercial SOC 2.

Not ideal for: Its specialist depth is likely excessive for a small startup seeking only a straightforward first SOC 2 at the lowest price.

Sources Official Schellman site ↗ AICPA peer-review record ↗

Best for: Small and mid-sized organizations seeking an established firm with SOC, PCI, and HITRUST coverage.

Why it stands out: KirkpatrickPrice has a long-running assurance practice and supports common needs across SaaS, managed services, fintech, and healthcare. It is a useful middle ground between a small SOC-only boutique and a large enterprise firm.

Not ideal for: It does not offer the same proprietary GRC-platform workflow as bundled providers, so ask how evidence collection will work with your stack.

Sources Official KirkpatrickPrice site ↗ AICPA peer-review record ↗

Best for: Large enterprises and public companies whose customers, board, or procurement team require a Big Four firm.

Why it stands out: Deloitte brings global delivery capacity and the brand recognition some regulated or enterprise buyers explicitly request. It belongs on the shortlist when acceptance risk matters more than finding the fastest or least expensive audit.

Not ideal for: Its estimated cost and scheduling range are the highest in this shortlist, making it a poor default for most startup SOC 2 programs.

Sources Official Deloitte site ↗ AICPA peer-review record ↗

Best for: Cloud-native companies coordinating SOC 2 with ISO, HITRUST, PCI, or CMMC work.

Why it stands out: BARR Advisory focuses on cloud environments and maps shared evidence across multiple frameworks in coordinated engagements. Its mix of attestation and certification capabilities fits teams that want boutique access without splitting related audits among several providers.

Not ideal for: A coordinated multi-framework practice will usually cost more than a narrow SOC-only engagement, so define the required outputs before requesting a quote.

Sources Official BARR Advisory site ↗ AICPA peer-review record ↗

Best for: Mid-market organizations that want SOC 2 alongside ISO, HITRUST, or PCI work from a national firm.

Why it stands out: Armanino is a licensed CPA firm with a disclosed peer-review pass in the directory record and a broad assurance practice. Its recorded ISO certification and healthcare or payment-framework capabilities make it a practical multi-framework candidate.

Not ideal for: A broad national practice can involve more process than a SOC-only boutique; confirm the named engagement team, schedule, and included scope.

Sources Official Armanino LLP site ↗ AICPA peer-review record ↗

Best for: Southeast US and mid-market teams that want a CPA firm with SOC, ISO, HITRUST, PCI, CMMC, or FedRAMP runway.

Why it stands out: Aprio combines a licensed CPA practice and a disclosed peer-review pass with several adjacent assessment capabilities recorded in the directory. That breadth can reduce future vendor changes as the compliance program grows.

Not ideal for: The directory price and timeline are estimates, and adjacent framework labels do not prove every service will use the same team; verify both in the proposal.

Sources Official Aprio site ↗ AICPA peer-review record ↗