PCI DSS QSA Firms That Also Issue SOC 2: 23 firms compared

Best for · B2B SaaS startups (Series A through growth stage) using Drata, Vanta, or Secureframe and prioritizing speed without sacrificing thoroughness. AI/ML and LLM companies needing SOC 2 + ISO 42001 together — Prescient audits leading AI and large language model providers. Fintech, healthtech, and security vendors at scale. CSPs pursuing FedRAMP authorization. DoD contractors needing a full C3PAO (newly authorized March 2026). Teams already using Slack who want same-day audit communication.

Differentiator · One of the largest SOC 2 auditors globally for SaaS (fintech, healthtech, security) and AI companies — including major LLM providers — running 5,000+ audits a year across all standards. Cybersecurity-first DNA: founded by CREST-certified penetration testers, not traditional accountants. Run from a Nashville HQ with a distributed team of 200+ across the US, EMEA, and APAC and a same-day Slack/Teams response guarantee. SOC 2 engagements start at $10K with report delivery in 4-6 weeks once fieldwork begins. Authorized CMMC C3PAO as of March 2026 (joining FedRAMP 3PAO, PCI QSA, HITRUST, and ANAB ISO accreditation for 27001/27701/42001). The Cacilian PTaaS platform and CAIT (Continuous AI Tester) bring AI-driven offensive security into the audit workflow. A Top 20 CREST and CSA STAR organization globally, operating under Prescient Security Management LLC as an AICPA alternative practice structure.

Best for · Small-to-mid-sized organizations ($5M-$100M revenue) without enterprise budgets. First-time SOC seekers wanting bundled pricing transparency ($30K Year 1 package: Gap + Type I + Type II, then $25K annual renewals). MSPs and IT service providers. Healthcare organizations needing HITRUST + HIPAA. Budget-conscious buyers valuing long-term partnership over transactional audits

Differentiator · Pricing transparency: documented $25K-$30K bundled packages with clear annual renewal pricing. Strong MSP community reputation with 4+ year client relationships. PCAOB-registered quality standards at accessible mid-market pricing. Boutique personalization at scale (130 employees serving 2,000+ clients = ~15 clients per employee). 18+ years experience (founded 2005) with $42M revenue demonstrates financial stability without PE pressure

Best for · Healthcare and PE-backed mid-market organizations needing SOC reports plus parallel HITRUST, ISO 27001, PCI DSS, NIST, or CMMC assessments under one roof

Differentiator · Top-50 US accounting firm with an integrated cybersecurity practice covering SOC 1/2/3, HITRUST (one of the nation's leading HITRUST assessors), ISO 27001, NIST 800-171/53, PCI DSS, CMMC, and HIPAA — supported by 1,000+ professionals across 7 US offices plus a Chennai delivery team

Best for · Defense contractors needing CMMC + FedRAMP, federal agencies requiring top-tier FedRAMP 3PAO, classified systems operators (ONLY auditor with DoD Facility Security Clearance), healthcare organizations needing HITRUST + SOC 2 bundles, companies wanting Top 50 CPA brand with multi-framework expertise

Differentiator · #1 FedRAMP 3PAO globally with unmatched government/defense expertise. ONLY audit firm with DoD Facility Security Clearance for classified assessments (unassailable competitive moat). Top 50 CPA firm issuing 1,000+ SOC reports annually. 'The Power of One' cross-compliance: SOC + ISO + FedRAMP + HITRUST + PCI + CMMC under single roof. Founded 2002, 20+ years compliance focus

Best for · Cloud-native SaaS, IaaS, and PaaS companies (high-growth startups through Fortune 1000 enterprises) needing multi-framework attestation (SOC 2 + ISO 27001 + HITRUST + PCI DSS) in a single coordinated engagement. Healthcare technology pursuing HITRUST. Y Combinator-style SaaS startups already running Vanta who want a Vanta MSP partner that can attest. Companies that want boutique-feel partner attention with global-consulting-firm methodology.

Differentiator · One of a handful of US firms eligible to audit against the four highest-regarded frameworks under one roof: ISO 27001, SOC 2, HITRUST, and PCI DSS. Branded 'Coordinated Audit' approach maps evidence once across multiple frameworks. 'No surprises' promise published on the readiness-assessment page: clear scoping, no last-minute findings. Cloud-native methodology built specifically for AWS/Azure/GCP. Big 4 alumni team operating remote-first since founding (2014). Vanta Managed Service Provider; uses taskBARR audit-management platform plus Audora partnership for 30% efficiency gains. Cameron Kline elevated to VP, Attest Practice Leader (January 2026). Multiple Best Companies to Work For awards (Ingram's 2024; KCBJ Fastest-Growing Tech 2025).

Best for · Middle-market companies needing consolidated compliance across multiple frameworks — SOC 2 + PCI + HIPAA + HITRUST, or CMMC + FedRAMP + ISO — under a single engagement team. Companies handling sensitive data facing multi-standard audit burdens who want one firm to streamline and de-duplicate evidence collection. Government contractors requiring CMMC/FedRAMP readiness alongside SOC 2. Healthcare and higher-education organizations pursuing HITRUST certification (FD's HITRUST practice leader has managed 300+ assessments). Companies with international operations needing dual AICPA/ISAE reporting. Growth companies that value a firm investing aggressively in scale, talent and technology.

Differentiator · FD's SOC Practice is led by competent Peer Reviewers along with a co-author of the AICPA's official SOC for Service Organizations curriculum — making FD one of the only firms where the person who literally wrote the AICPA's SOC playbook leads client engagements. FD sits on multiple HITRUST councils, giving FD arguably the deepest HITRUST bench in the country. Backed by General Atlantic (2025), FD's signature approach consolidates SOC 2, PCI, HIPAA, and HITRUST into a single evidence-collection cycle — eliminating duplicate audit burden.

Best for · Enterprise IT Outsourcing Services, Managed Security, Customer Support, Healthcare Claims Management & Processing, and FinTech Services

Differentiator · Integrated compliance approach with strategic guidance; SOC 2+ hybrid assessments combining multiple frameworks (HIPAA, HITRUST, CSA STAR); established relationships with client continuity

Best for · SaaS, FinTech, HealthTech, e-commerce, regulated industries, enterprises to fast-growing startups

Differentiator · CPA-led firm with AICPA standards, end-to-end support from readiness to attestation, global presence with local regulatory expertise, automation-driven compliance execution

Best for · Enterprises needing compliance across 60+ frameworks through a single consolidated audit; organizations managing multiple annual compliance programs

Differentiator · Compliance as a Service (CaaS) pioneer; One Audit™ satisfies PCI DSS, ISO 27001, GDPR, HIPAA, SOC 2, and NIST 800-53 simultaneously; continuous compliance monitoring year-round; supports 60+ frameworks globally; proprietary ComplianceHub self-assessment platform

Best for · Mid-market to enterprise companies, organizations requiring multiple locations/subsidiaries, companies needing Big Four quality without Big Four pricing

Differentiator · 7th-largest US accounting firm created from CBIZ acquisition of Marcum (Nov 2024) with combined $2.8B revenue and 10,000+ employees across 160+ locations. Risk Advisory practice with staff holding CISA/CISSP/QSA/GPEN/GWAPT certifications, extensive SOC 1/2/3 experience, CSA STAR certified auditor. CBIZ provides finance, advisory, insurance services; attest work handled by Mayer Hoffman McCann (MHM CPAs)

Best for · Mid-market through enterprise companies needing multi-framework coverage (SOC 2 + FedRAMP, SOC 2 + PCI, SOC 2 + HITRUST). Cloud service providers pursuing FedRAMP authorization (Coalfire is a top-three 3PAO with 121+ FedRAMP assessments). Payment processors needing PCI DSS at Level 1 scale. Healthcare SaaS pursuing HITRUST + HIPAA. DoD contractors needing CMMC Level 2 via Coalfire Federal (operationally independent C3PAO entity).

Differentiator · One of the world's largest specialist compliance assessors, with 1,000+ team members, 1M+ assessment hours, and 600+ framework experts. Top-three FedRAMP 3PAO. 75% of SOC engagements serve cloud service providers (Google, Amazon, IBM, Microsoft trust Coalfire). 500+ SOC reports issued annually. Owned by Apax Partners since 2020. Coalfire Federal runs as an independent C3PAO entity (DIBCAC CMMC Level 2 re-certified with perfect score, July 2025). Brad Little became CEO January 2026 (ex-Google Cloud, ex-Capgemini), replacing 20-year CEO Tom McAndrew. Compliance Essentials platform launched MCP-compatible Audit AI in 2025-2026.

Best for · Technology-driven companies, SaaS platforms, cloud services, FinTech, HealthTech, IT service providers, and organizations managing multiple compliance frameworks seeking consolidated audits

Differentiator · 25+ years compliance expertise, CPA-attested SOC 2 reports, experienced senior auditors, white-glove customer-focused approach, cross-framework expertise mapping controls across SOC 2, ISO 27001, PCI, HIPAA, and NIST

Best for · Small and mid-sized domestic and international companies needing SOC 1/2/3, ISO 27001, PCI DSS, HITRUST, and HIPAA compliance

Differentiator · PCAOB registered firm headquartered in Atlanta with global presence across North America, Europe, and Asia; NMSDC certified; complete 360° circle of assurance, advisory, risk, and compliance services; serves clients across all 5 main continents

Best for · Companies needing SOC 2, PCI DSS, HIPAA, CMMC, or privacy compliance wanting large-firm resources with specialized boutique attention

Differentiator · Division of Carr, Riggs & Ingram (CRI), a top-25 national CPA firm — large-firm resources with specialized boutique service; experienced QSA team for PCI DSS; dedicated SOC readiness program minimizing audit delays; secure Auditwerx Dashboard for evidence uploads

Best for · Canadian and international companies needing SOC 1/2/3, ISO 27001, PCI DSS, GDPR, CCPA, PIPEDA, AML, or blockchain compliance from a dual CPA firm and ISO Certification Body

Differentiator · Both a CPA audit firm AND an accredited ISO Certification Body — rare dual capability; Big 4 CPA and CA professional backgrounds; blockchain and crypto compliance expertise; specialist socassurance.ca division; serves large corporations to growth-stage companies internationally

Best for · Mid-market SaaS, consulting, and government contractors seeking hands-on SOC 2 guidance with deep industry expertise.

Differentiator · CPA firm combining licensed CPAs with cybersecurity professionals, offering industry-specific SOC 2 expertise and practical business value beyond compliance.

Best for · Government contractors and cloud service providers needing specialized FedRAMP, CMMC, and SOC 2 compliance audits with expert advisory.

Differentiator · FedRAMP 3PAO and CMMC C3PAO assessor with proprietary IT Audit Machine platform and AI-enhanced Cybervisor advisory spanning 26+ years.

Best for · Organizations prioritizing hands-on remediation support and rapid compliance certification across multiple frameworks.

Differentiator · AICPA-licensed specialist offering hands-on remediation alongside auditing, with 100% documented client retention.

Best for · Fast-growing SaaS and fintech companies seeking specialist SOC 2 and cybersecurity audit expertise.

Differentiator · PCAOB-registered CPA firm founded by Grant Thornton partner, combining audit rigor with specialized SOC 2 and cybersecurity expertise, performing 400+ audits annually.

Best for · Tech startups and established companies seeking fixed-fee SOC 2 and compliance audits with GRC automation support.

Differentiator · Fixed-fee SOC 1/2/3 audits with 1,000+ compliance reports issued and deep integrations across six major GRC platforms.

Best for · SaaS and FinTech companies seeking fast-track SOC 2 certification with guaranteed timelines and enterprise-grade controls.

Differentiator · Guaranteed SOC 2 certification timelines (6-8 weeks) backed by SLA with 100% in-house auditors and 98% first-time pass rate.

Best for · Mid-market to enterprise organizations in regulated industries requiring senior-led audit expertise and industry-specific guidance.

Differentiator · 115-year independent firm with senior leadership directly involved in every engagement and specialized expertise in fintech, banking, and healthcare.