SOC 2 audit firms
19 licensed audit practices that perform SOC 2 examinations, grouped by the buyer stage they fit best. Each profile links to the firm's website. We are an independent directory — not an audit firm, and these listings are not paid placements or endorsements.
Provenance: profiles are compiled from each firm's public materials (September 2026); every price carries a source label. All 19 firm websites were load-verified September 2026 — the row-level verification log is on our methodology page.
For early-stage startups
First SOC 2, small team, price-sensitive, need speed. These firms focus on startup and small-business audits with published or low planning ranges.
| Firm | Type | Type 2 planning range | Fieldwork window |
|---|---|---|---|
| Zero Day CPA | Boutique licensed CPA firm | $7K–$10K (published planning range (Sept 2026)) | 2–6 wk |
| Thoropass | Auditor-led assurance practice | From $9,995 (firm-published price) | 2–6 wk |
| Prescient Assurance | AICPA-accredited SOC audit firm | Not published — request a scoped quote | Varies — confirm in proposal |
| MJD Advisors | SOC-focused licensed CPA firm | $15K–$35K (published planning range (Sept 2026)) | 2–6 wk |
| Johanson Group, LLP | Licensed CPA firm focused on security compliance audits | Not published — request a scoped quote | Varies — confirm in proposal |
Planning ranges are not quotes. See our methodology for how prices are labeled and verified.
For growth-stage teams
Series A through mid-market: you need a credible report for bigger customers, possibly with adjacent frameworks (ISO 27001, PCI, HITRUST) on the roadmap.
| Firm | Type | Type 2 planning range | Fieldwork window |
|---|---|---|---|
| Thoropass | Auditor-led assurance practice | From $9,995 (firm-published price) | 2–6 wk |
| MJD Advisors | SOC-focused licensed CPA firm | $15K–$35K (published planning range (Sept 2026)) | 2–6 wk |
| Johanson Group, LLP | Licensed CPA firm focused on security compliance audits | Not published — request a scoped quote | Varies — confirm in proposal |
| Sensiba | Top-75 U.S. accounting and consulting firm | Not published — request a scoped quote | Varies — confirm in proposal |
| KirkpatrickPrice | Assurance specialist | $12K–$45K (published planning range (Sept 2026)) | 3–8 wk |
| 360 Advanced | Cybersecurity and compliance audit firm | $15K–$80K (published planning range (Sept 2026)) | 3–12 wk |
| BARR Advisory | Security and compliance advisory + attest practice | $15K–$50K (published planning range (Sept 2026)) | 8–16 wk |
| Armanino | National full-service CPA firm | $15K–$40K (published planning range (Sept 2026)) | 3–12 wk |
| Aprio | National full-service CPA and advisory firm | $22K–$75K (published planning range (Sept 2026)) | 4–10 wk |
| Withum | National top-ranking public accounting and advisory firm | Not published — request a scoped quote | Varies — confirm in proposal |
| A-LIGN | Licensed CPA firm | $15K–$50K (published planning range (Sept 2026)) | 3–12 wk |
| BDO | National full-service CPA firm | Not published — request a scoped quote | Varies — confirm in proposal |
| RSM | National CPA firm focused on the middle market | Not published — request a scoped quote | Varies — confirm in proposal |
| Grant Thornton | National full-service CPA and advisory firm | Not published — request a scoped quote | Varies — confirm in proposal |
Planning ranges are not quotes. See our methodology for how prices are labeled and verified.
For enterprise buyers
Regulated, multi-entity, or multi-framework programs — or a stakeholder that requires a Big Four or top-tier name on the report.
| Firm | Type | Type 2 planning range | Fieldwork window |
|---|---|---|---|
| A-LIGN | Licensed CPA firm | $15K–$50K (published planning range (Sept 2026)) | 3–12 wk |
| BDO | National full-service CPA firm | Not published — request a scoped quote | Varies — confirm in proposal |
| RSM | National CPA firm focused on the middle market | Not published — request a scoped quote | Varies — confirm in proposal |
| Grant Thornton | National full-service CPA and advisory firm | Not published — request a scoped quote | Varies — confirm in proposal |
| Schellman | Top-50 CPA firm | $20K–$100K (published planning range (Sept 2026)) | 3–12 wk |
| Coalfire | Cybersecurity assessment and advisory firm | $40K–$120K (published planning range (Sept 2026)) | 4–12 wk |
| Deloitte | Big Four professional-services network | $60K–$400K (published planning range (Sept 2026)) | 6–18 wk |
Planning ranges are not quotes. See our methodology for how prices are labeled and verified.
All 19 auditor profiles
Zero Day CPA
Zero Day CPA is a Michigan-based boutique accounting firm focused on SOC 1, SOC 2, and HIPAA audits for B2B SaaS and service organizations. It offers readiness assessments, gap analyses, and Type I, Type II, and combined-framework audits with on-site or remote delivery.
Thoropass
Thoropass pairs an auditor-led assurance practice with compliance technology. The SOC 2 report is issued by its licensed CPA entity, Laika Compliance, LLC (dba Thoropass Assurance), while its platform handles evidence collection — and buyers can keep Vanta, Drata, or other GRC tools they already use. It publishes package pricing starting at $9,995.
Prescient Assurance
Prescient Assurance, founded in 2021, positions itself as the security-testing-led SOC 2 auditor for SaaS companies, pairing audit teams with cloud-native and application-security experience. It emphasizes startup-friendly, technology-driven engagements.
MJD Advisors
MJD Advisors is a CPA firm concentrated on SOC reporting rather than tax or general financial-statement audit work. Its narrow service model suits buyers who want a smaller firm centered on the attestation they actually need.
Johanson Group, LLP
Johanson Group, LLP is a licensed CPA firm dedicated to security and compliance audits. It publishes detailed public guidance on the SOC 2 process and offers readiness assessments, examinations, and audits aimed at making the audit cycle transparent.
Sensiba
Sensiba is a top-75 U.S. accounting and consulting firm that expanded its cybersecurity audit practice by acquiring AssuranceLab in 2025. It serves more than 2,300 startup and technology-driven clients, runs remote-first, flat-fee audits, and is a Drata alliance partner.
KirkpatrickPrice
KirkpatrickPrice is a Nashville-based assurance specialist with a long-running SOC practice supporting SaaS, managed services, fintech, and healthcare clients. It sits in the middle ground between a small SOC boutique and a large enterprise firm, with PCI and HITRUST coverage alongside SOC.
360 Advanced
360 Advanced, founded in 2004, delivers integrated audit, advisory, and testing services across SOC, ISO, HITRUST, PCI, and FedRAMP frameworks. In some states it operates under the name Hiestand, Brand, Loughran, P.A. to meet CPA licensing requirements.
BARR Advisory
BARR Advisory specializes in cybersecurity consulting and compliance for companies with high-value data in cloud environments (AWS, Azure, Google Cloud). It is authorized as a CMMC C3PAO and accredited to certify against ISO 27001, 27701, and 42001.
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Get matched quotesArmanino
Armanino is a national CPA and consulting firm with a broad assurance practice covering SOC, ISO certification, healthcare, and payment-framework work. Its scale suits mid-market companies that want SOC 2 alongside adjacent frameworks from one national firm.
Aprio
Aprio is a national CPA and advisory firm with an assurance practice spanning SOC, ISO, HITRUST, PCI, CMMC, and FedRAMP. Its breadth suits mid-market teams whose compliance program is expected to widen beyond a first SOC 2.
Withum
Withum is a national advisory, tax, and accounting firm founded in 1974, with more than 3,500 professionals. Its dedicated SOC services team assists with SOC 1, SOC 2, and SOC for Cybersecurity engagements for technology and emerging-growth clients.
A-LIGN
A-LIGN describes itself as the number-one issuer of SOC 2 reports, trusted by more than 6,400 organizations. It pairs audit services with its A-SCEND compliance management platform and works with businesses from startups to global enterprises.
BDO
BDO is one of the largest U.S. accounting firms, with a risk advisory practice performing SOC 1, SOC 2, and SOC 3 examinations alongside internal audit and IT risk work. Its scale suits larger and multi-entity organizations.
RSM
RSM is a national professional-services firm focused on the middle market. Its risk consulting practice performs SOC 1, SOC 2, and SOC 3 readiness and attestation engagements across industries, with dedicated systems-and-process-assurance teams.
Grant Thornton
Grant Thornton describes itself as one of the leading SOC report issuers nationwide, with a dedicated Strategic Assurance & SOC Services practice whose staff work on SOC engagements full time. Its SOC.x methodology standardizes reporting across engagements.
Schellman
Schellman is a top-50 CPA firm focused on IT audit and compliance. It states that it is 100% independent with no consulting agenda, does not charge by the hour, and never uses interns or contractors on engagements.
Coalfire
Coalfire is a cybersecurity assessment firm serving enterprises with SOC, FedRAMP, PCI, and HITRUST work. Its assessment-led model suits large organizations running several high-assurance programs in parallel.
Deloitte
Deloitte is one of the Big Four global professional-services networks. Buyers choose it when a customer contract, board, investor, or multi-jurisdiction footprint explicitly requires a Big Four issuer on the report.
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