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SOC 2 auditors, compared.
SOC 2 auditors are AICPA-licensed CPA firms that examine security controls and issue Type 1 or Type 2 attestation reports. We rank 180 firms by price ($7.5K–$400K), Type 2 timeline (3–18 weeks), AICPA peer-review status, and industry specialization.
Top 10 SOC 2 Auditors
The top 10 SOC 2 auditors below span specialist, regional, national, and Big Four tiers — covering Type 2 prices from $15K to $400K and timelines from 3 to 18 weeks. All ten hold active AICPA peer-review status. Picks are independent and update May 3, 2026.
| # | Firm | Tier | Best for | Type 2 price | Timeline | AICPA peer-reviewed |
|---|---|---|---|---|---|---|
| 1 | Prescient Security New York, NY | Specialist | B2B SaaS, FinTech, HealthTech | $20K–$75K | 3–9 wk | |
| 2 | Schellman Tampa, FL | National | Government/Defense, Healthcare, Financial Services | $20K–$100K | 3–12 wk | |
| 3 | A-LIGN Tampa, FL | Specialist | Technology, B2B SaaS, Healthcare | $15K–$50K | 3–12 wk | |
| 4 | Thoropass New York, NY | Specialist | B2B SaaS, FinTech, HealthTech | $25K–$70K | 4–10 wk | |
| 5 | Johanson Group Colorado Springs, CO | Specialist | B2B SaaS, Startups (Pre-Series A through Series B), FinTech | $15K–$30K | 1–3 wk | |
| 6 | Linford & Company Denver, CO | Regional | SaaS, Technology, E-commerce | $18K–$58K | 3–8 wk | |
| 7 | Sensiba LLP Pleasanton, CA | Regional | B2B SaaS, Technology, FinTech | $20K–$50K | 4–10 wk | |
| 8 | Armanino LLP San Ramon, CA | National | Technology, Healthcare, Financial Services | $15K–$40K | 3–12 wk | |
| 9 | CBIZ (formerly Marcum LLP) New York, NY | National | Technology, Healthcare, Financial Services | $40K–$100K | 4–9 wk | |
| 10 | Deloitte New York, NY | Big Four | Enterprise, Financial Services, Healthcare | $60K–$400K | 6–18 wk |
B2B SaaS startups (Series A through growth stage) using Drata, Vanta, or Secureframe and prioritizing speed without sacrificing thoroughness. AI/ML companies needing SOC 2 + ISO 42001 together. CSPs pursuing FedRAMP authorization. DoD contractors needing a full C3PAO (newly authorized March 2026). Teams already using Slack who want same-day audit communication.
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
Mid-market to enterprise companies that need multiple compliance frameworks (SOC 2 + ISO 27001 + HITRUST + FedRAMP + PCI) under one roof. CSPs pursuing FedRAMP authorization. Companies that want a top-three FedRAMP 3PAO and #1 SOC 2 issuer on the cover of the report.
First-time SOC 2 / ISO 27001 / HIPAA / PCI / HITRUST seekers (under 200 employees) who want one vendor handling both the GRC platform and the audit, eliminating the handoff between Vanta/Drata-style automation and a separate CPA firm. Companies pursuing multiple frameworks who want shared evidence across SOC 2 + ISO 27001 + HITRUST + PCI in a single audit cycle. Mid-market SaaS, fintech, and healthtech seeking 25-50% savings vs. traditional audit firms with fixed pricing.
First-time SOC 2 buyers. Pre-Series A through Series B SaaS startups already running Drata, Vanta, Secureframe, or Rippling who want a fixed-fee, 4-to-6-week audit from an accredited CPA firm that also issues ISO 27001 certifications, HIPAA assessments, and PCI DSS reports under one roof. Founders who prioritize speed and price transparency over a brand-name auditor.
Silicon Slopes companies and Utah tech corridor startups
VC-backed SaaS startups and Bay Area tech companies needing SOC 2 to unlock enterprise sales in 4-8 months. Cloud-native companies already using Drata, Vanta, Secureframe, or Sprinto. Companies combining SOC 2 + ISO 27001 (or SOC 2 + ISO 42001 for AI governance) in a single engagement. APAC-connected companies needing Essential 8, CDR, or GS 007 alongside US compliance. ESG-aware organizations that value B Corp status in their vendor chain.
Mid-market tech companies ($10M-$500M revenue) prioritizing speed and technology integration. Private equity-backed companies needing bundled audit, tax, and compliance services. Bay Area & West Coast startups wanting local presence and tech industry fluency. Companies expanding internationally requiring both SOC 2 and ISO 27001/27701. Organizations valuing efficiency over brand prestige alone
Mid-market to enterprise companies, organizations requiring multiple locations/subsidiaries, companies needing Big Four quality without Big Four pricing
Large enterprises and public companies with complex environments
What SOC 2 Audit Firms Actually Charge
SOC 2 audit pricing falls into three bands: $12K–$20K for a startup Type 1 from a specialist, $20K–$40K for a growth-stage Type 2, and $45K–$400K+ for enterprise audits from national or Big Four firms. Add $5K–$15K/year for compliance automation software.
The wrong auditor costs more than the wrong price. We see companies overpay by $20,000+ for a generic engagement, then get stuck with a "bad report" enterprise customers won't accept.
Brand matters. An unknown local CPA might save $5K up front and cost millions in stalled deals when a Fortune 500 prospect rejects the report.
Quick Answer: What should you pay?
- Startup (Type 1) $12K – $20K
- Growth (Type 2) $20K – $40K
- Mid-market (Type 2) $45K – $100K
- Enterprise / Big Four $100K – $400K+
Decision Matrix
| Factor | Bad Choice | Right Choice |
|---|---|---|
| Timeline | Unclear / 6mo+ | 2–8 weeks |
| Pricing | Hourly / open-ended | Flat rate |
| Reputation | Unknown CPA | AICPA peer-reviewed |
| Software | Manual Excel | Vanta / Drata native |
How We Vet SOC 2 Audit Firms
Every SOC 2 auditor in this directory passes a three-step review: AICPA peer-review verification, direct price confirmation with the firm, and post-audit interviews with named clients. We never accept payment to alter rankings. Methodology updates are logged publicly.
Manual Verification
We inspect every CPA license, AICPA peer-review status, and verified client testimonial — line by line.
Direct Price Research
We contact firms directly, then interview their clients to confirm real-world price ranges and timelines.
Community Feedback
We interview CTOs and VPs of Engineering after their audit closes — for the unvarnished version.
SOC 2 Auditor Tiers: Which Type Is Right for You?
SOC 2 auditors fall into three working tiers: SOC 2 specialists ($12K–$35K, 2–8 weeks), mid-tier regional firms ($25K–$60K, 2–6 months), and Big Four / national firms ($45K–$400K+, 3–9 months). Pick the lowest tier your enterprise buyers will accept.
Big Four & National Firms
Deloitte, EY, PwC, KPMG, BDO, Grant Thornton. Maximum brand recognition for enterprise procurement.
- ✓ Best for: Enterprise, public companies, regulated industries
- ✓ Cost: $45K–$400K+
- ✓ Timeline: 3–9 months
Mid-Tier Regional Firms
Established CPA firms with dedicated SOC 2 practices. Solid reputation without enterprise pricing.
- ✓ Best for: Growth-stage SaaS, mid-market
- ✓ Cost: $25K–$60K
- ✓ Timeline: 2–6 months
SOC 2 Specialists
Firms built around SOC 2 and cloud security. Fastest timelines, best startup experience.
- ✓ Best for: Startups, SaaS, first-time SOC 2
- ✓ Cost: $12K–$35K
- ✓ Timeline: 2–8 weeks
Compliance platforms
The other half of the decision: your compliance platform
The right SOC 2 auditor is half the decision. The other half is the compliance automation platform — Vanta, Drata, Sprinto, Secureframe, Thoropass, and 7 more — that prepares your evidence and integrates with the auditor. We've reviewed all 12, independently.
SOC 2 Auditors by Industry & Region
SOC 2 requirements shift by industry and jurisdiction: HIPAA layers in for healthcare, PCI for fintech, FedRAMP for govcon, GDPR for EU operations. We track which auditors specialize where so you can match the firm to your buyers' contracts.
By Industry
How a SOC 2 Audit Actually Works
A SOC 2 audit runs in three stages: scoping and readiness assessment (4–8 weeks), evidence collection and control testing (6–12 weeks for Type 2), and report delivery with remediation (2–4 weeks). Total elapsed time: 4 weeks for Type 1, 3–6 months for Type 2.
Scoping & Readiness Assessment
Your auditor defines which Trust Service Criteria are in scope (Security is mandatory; Availability, Processing Integrity, Confidentiality, and Privacy are optional). Most startups start with Security only. The auditor reviews current controls and identifies gaps before the formal audit begins.
Evidence Collection & Control Testing
The auditor gathers evidence that controls exist (Type 1) or operated effectively over the observation period (Type 2). Specialist firms integrate directly with Vanta, Drata, or Secureframe to pull evidence automatically — cutting this phase from weeks to days.
Report Delivery & Remediation
The final SOC 2 report includes the auditor's opinion, a system description, and detailed test results. Exceptions trigger remediation and possible re-testing. The report is then shared with customers and prospects under NDA — usually to unblock procurement.
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SOC 2 Auditors: Frequently Asked Questions
Fifteen questions buyers ask before hiring a SOC 2 auditor — answered with the specifics that change the decision: prices, timelines, AICPA peer-review, Type 1 vs. Type 2, specialists vs. Big Four, and what an auditor actually checks.
What is a SOC 2 auditor?
A SOC 2 auditor is an AICPA-licensed CPA firm authorized to issue SOC 2 attestation reports — Type 1 (point-in-time) or Type 2 (3–12 month observation period). Consulting firms and compliance platforms cannot issue SOC 2 reports; only CPA firms can. Every firm in this directory holds an active CPA license.
Who are the best SOC 2 auditors in 2026?
The top SOC 2 auditors in this directory are Prescient Security, Schellman, A-LIGN, Thoropass, Johanson Group, Linford & Company, Sensiba LLP, Armanino, CBIZ, and Deloitte — chosen across specialist, regional, national, and Big Four tiers. Best fit depends on company stage, industry, and price tolerance. The comparison table above shows the trade-offs.
How much does a SOC 2 auditor cost?
SOC 2 auditor fees range from $7,500 (specialist Type 1 for early-stage startups) to $400,000+ (Big Four enterprise Type 2). The median Type 2 audit for a growth-stage SaaS company runs $25,000–$45,000. A compliance platform (Vanta, Drata, Secureframe) adds $5,000–$15,000/year on top of the audit fee.
How do I choose a SOC 2 auditor?
Match the auditor's tier to your buyer's expectations. Enterprise prospects often require a Big Four or national firm; startups usually choose specialists for speed and flat-rate pricing. Verify AICPA peer-review status, ask for references in your industry, and confirm pricing structure before signing.
Do SOC 2 auditors have to be CPAs?
Yes. SOC 2 audits can only be performed by AICPA-licensed CPA firms. Consultants can prepare you for the audit (readiness work) but cannot sign the report. Always verify the firm's CPA license and current peer-review status before engaging.
What's the difference between SOC 2 Type 1 and Type 2?
The auditor is the same firm; Type 1 versus Type 2 refers to scope. Type 1 confirms controls are designed correctly at a point in time. Type 2 confirms they operated effectively across a 3–12 month observation window. Most enterprise customers will eventually require Type 2.
How long does a SOC 2 audit take?
A Type 1 audit takes 4–8 weeks for a company that's already prepared. A Type 2 takes 3–6 months end-to-end, including the observation window. Specialist firms using Vanta or Drata integrations compress evidence collection from weeks to days. Add 4–8 weeks of readiness work if controls aren't yet in place.
What is AICPA peer review and why does it matter?
Every CPA firm performing SOC 2 audits must complete an AICPA peer review every three years. The peer review evaluates the firm's audit methodology and quality control. A firm without current peer-review status cannot legitimately issue a SOC 2 report — verify it before signing.
Can a small CPA firm perform a SOC 2 audit?
Yes — any AICPA-licensed CPA firm with current peer-review status can issue a SOC 2 report. But small generalist firms often lack SaaS and cloud security experience, which slows the audit and produces reports enterprise buyers question. Tech companies typically get faster, more credible reports from SOC 2 specialists.
What's the best SOC 2 auditor for a SaaS startup?
Specialist firms (Prescient Security, A-LIGN, Thoropass, Johanson Group) are usually the best fit for SaaS startups. They integrate with Vanta, Drata, and Secureframe, deliver Type 1 in 4–8 weeks, and price flat-rate at $15K–$35K. Big Four firms are normally overkill at this stage and cost 3–5x more.
Are SOC 2 auditors regulated?
SOC 2 auditors are regulated through the AICPA via licensure, mandatory peer review every three years, and the SSAE 18 attestation standard. There is no SOC-specific regulator. State Boards of Accountancy license individual CPAs and discipline firms for misconduct.
Are SOC 1 and SOC 2 audited by the same firms?
Most firms that offer SOC 2 also offer SOC 1, but the two audits address different risks. SOC 1 covers financial reporting controls (Sarbanes-Oxley adjacent). SOC 2 covers security, availability, processing integrity, confidentiality, and privacy. Many SaaS companies only need SOC 2.
Can I switch SOC 2 auditors mid-engagement?
You can switch auditors between annual audits, and most firms do change every 2–3 years. Switching mid-engagement is rare and typically restarts the readiness process. Common reasons to switch: rising prices, slow turnaround, or graduating from a generalist to a specialist firm as your company grows.
What does a SOC 2 auditor actually check?
A SOC 2 auditor tests your security controls against the AICPA Trust Services Criteria — the Common Criteria (CC1–CC9) plus four optional categories: Availability, Processing Integrity, Confidentiality, and Privacy. They review evidence (policies, system configurations, access logs) and interview staff to confirm controls operate as designed.
How is SOC 2 audit pricing structured?
Most specialist and mid-tier firms charge a flat fee for a defined scope. National and Big Four firms more often bill hourly or use tiered SOWs that add costs when scope changes. Flat-rate pricing is the buyer-friendly model — confirm the structure and exclusions in writing before signing.