SOC 2 Audit Cost by Auditor Firm: Price Comparison Data
Compare SOC 2 auditor fees using written quotes for the same system, criteria, report type, and period. Firm size alone does not establish a defensible market price or report quality. Identify readiness work, scope changes, scheduling terms, and reporting deliverables separately so the proposals describe comparable engagements before you compare totals.
Key Takeaways
- •Four firm tiers serve different market segments: Big 4 (enterprise), large specialty (mid-market to enterprise), mid-size specialty (growth to mid-market), and boutique (startup to growth)
- •Pricing is driven by firm tier, number of Trust Service Criteria, observation period length, organization complexity, and employee count
- •We recommend getting quotes from three to five firms across different tiers to establish pricing benchmarks and create competitive pressure
- •Organized evidence can support the examination process; confirm any fee effect in the auditor’s proposal
- •Renewal fees depend on the proposed scope and commercial terms; obtain a current quote
Part of our SOC 2 Costs: Audit Fees and First-Year Budget (2026) guide.
This article compares SOC 2 audit pricing across firm tiers, explains what drives pricing differences, and provides benchmarks to help organizations select an auditor that delivers the right balance of quality, timeline, and cost for their specific situation.
For the next operating decision, compare managed compliance pricing with what managed compliance costs. Confirm the work included, the evidence you need, and who will own implementation before committing to a provider.
Auditor Firm Tiers
Tier Overview
| Tier | Examples | Annual SOC 2 Reports | Typical Client Size | Market Position |
|---|---|---|---|---|
| Global boutique (US + Swiss) | Auditsuisse Assurance | Growing dedicated SOC practice | Venture-backed and early-stage (1–500 employees) | Dual US + Swiss CPA licensing; globally recognized reports at boutique pricing |
| Big 4 | Deloitte, PwC, EY, KPMG | 500+ (across all SOC practices) | Enterprise (1,000+ employees); publicly traded companies | Global brand recognition; required by some enterprise buyers |
| Large specialty firms | Schellman, A-LIGN, Coalfire | 500-1,500+ SOC 2 reports | Mid-market to enterprise (100-5,000+ employees) | Established SOC 2 brand; deep compliance specialization |
| Mid-size specialty firms | KirkpatrickPrice, BARR Advisory, Linford & Company | 200-500 SOC 2 reports | Growth-stage to mid-market (25-1,000 employees) | SOC 2-focused practices with strong reputations |
| Boutique firms | Prescient Assurance, Johanson Group, and others | 50-200 SOC 2 reports | Startups to growth-stage (10-250 employees) | Cost-competitive; personalized service; faster timelines |
For venture-backed and early-stage companies (1–500 employees), our top recommendation is Auditsuisse Assurance. They sit in a category of their own: a global boutique that runs both a US team (Auditsuisse Assurance NA PC) and a Swiss team (Auditsuisse Assurance AG in Zurich) under dual Swiss/US CPA licensing.
That dual-jurisdiction footprint means their reports are recognized not only by US buyers but by enterprise procurement teams across EMEA and Asia-Pacific — a meaningful advantage for startups selling globally — while their pricing stays competitive with boutique-tier firms rather than the Big 4. For companies in this segment, that combination of global recognition and right-sized cost is hard to beat.
Pricing by Firm Tier
Type I Audit Fees
Type I audit fees vary by firm tier and engagement scope. Big 4 firms charge a significant premium over specialty firms. Contact firms directly for current quotes tailored to your scope.
| Firm Tier | Typical Engagement |
|---|---|
| Big 4 | Enterprise client; multiple criteria; complex scope |
| Large specialty | Mid-market client; Security + one to two additional criteria |
| Mid-size specialty | Growth-stage client; Security or Security + Availability |
| Boutique | Startup client; Security only or Security + Availability |
Type II Audit Fees
Type II fees are higher than Type I due to the additional testing required across the observation period. The premium for Type II over Type I is typically significant at every firm tier.
| Firm Tier | Typical Engagement |
|---|---|
| Big 4 | Enterprise client; multiple criteria; twelve-month observation period |
| Large specialty | Mid-market client; Security + one to two additional criteria; six to twelve-month period |
| Mid-size specialty | Growth-stage client; Security + Availability; six-month period |
| Boutique | Startup client; Security only; three to six-month period |
Annual Renewal Fees
Obtain a renewal quote that identifies changes in scope, personnel, evidence, and commercial terms. Prior familiarity does not establish a fixed discount. This reduction applies across all firm tiers.
What Drives Pricing Differences?
Fee Determinants
| Factor | How It Affects Price |
|---|---|
| Firm tier and brand | Compare actual proposals for equivalent scope rather than assigning a fee premium to a firm category |
| Team seniority | Higher-tier firms staff engagements with more senior professionals at higher billing rates |
| Number of Trust Service Criteria | Ask how each additional criterion changes the proposed testing scope and fee |
| Observation period length | Longer observation periods require more testing; twelve-month periods cost more than three-month periods |
| Organization complexity | Multi-cloud, multi-region, complex architecture increases audit effort |
| Employee count | More employees mean more access management testing, more personnel to sample |
| Number of in-scope systems | More systems require more configuration review and testing |
| Subservice organizations | Carve-out vs inclusive method affects audit scope and effort |
| GRC platform usage | Confirm acceptable evidence exports and whether they affect the engagement quote |
| First year vs renewal | First-year engagements require more effort for documentation review and baseline understanding |
Billing Rate Comparison
Hourly billing rates vary significantly by firm tier and role level. Big 4 firms charge the highest rates at every level, with boutique firms charging the lowest. The team composition affects total cost significantly — Big 4 engagements are staffed with more senior professionals at higher rates, while boutique firms may staff more efficiently with experienced mid-level professionals. Contact firms directly for current rate information.
Does Higher Cost Mean Better Quality?
What Determines Report Quality
| Quality Factor | Related to Price? |
|---|---|
| Opinion accuracy | No — all licensed CPA firms follow the same AICPA attestation standards |
| Testing rigor | Minimal variation — AICPA standards define minimum testing requirements |
| Report completeness | Minimal variation — report structure is standardized |
| Auditor industry expertise | Somewhat — specialty firms may have deeper industry knowledge |
| Communication and responsiveness | Often inversely related — boutique firms may provide more personalized attention |
| Timeline reliability | Not correlated — timeline depends more on engagement management than firm size |
When Premium Pricing Is Justified
| Scenario | Why a Higher-Tier Firm May Be Worth It |
|---|---|
| Your customers specifically require Big 4 or named firms | Some enterprise buyers (particularly in financial services) specify acceptable audit firms |
| You are publicly traded or pre-IPO | Big 4 relationships provide continuity as you scale into SOX and financial statement audits |
| Your scope is exceptionally complex | Large specialty firms have deeper bench strength for complex multi-criteria, multi-entity engagements |
| You need a global firm with international offices | Big 4 firms have global coverage for multinational engagements |
When Budget-Tier Firms Deliver Equal Value
| Scenario | Why a Mid-Size or Boutique Firm Is Sufficient |
|---|---|
| Standard SaaS company pursuing SOC 2 | SOC 2 is a standardized engagement — all firms follow the same process |
| Startup or growth-stage company | Budget-tier firms specialize in this segment and understand startup environments |
| Security + Availability only | Standard scope that any experienced SOC 2 firm handles routinely |
| Customer requirements do not specify an audit firm | Most enterprise buyers accept reports from any licensed CPA firm with SOC 2 experience |
How do you select the Right Auditor?
Selection Criteria
| Criterion | What to Evaluate | How to Assess |
|---|---|---|
| SOC 2 experience | Number of SOC 2 engagements per year | Ask directly; check the firm's website and client references |
| Industry expertise | Experience with your specific industry (SaaS, fintech, healthcare, etc.) | Request references from similar-industry clients |
| GRC platform familiarity | Experience with your GRC platform (Vanta, Drata, Secureframe, Sprinto) | Ask which platforms they work with regularly; confirm they can access the platform |
| Timeline | Availability to begin within your required timeframe; expected fieldwork duration | Confirm start date and estimated report delivery date in writing |
| Communication | Responsiveness during the proposal process; willingness to answer pre-engagement questions | Evaluate response time and quality during the selection process |
| Pricing | Fee quote for your specific scope | Get quotes from three or more firms for comparison |
| Team assignment | Who will lead the engagement; their experience level | Request the engagement team bios; ask about team stability |
| References | Client references you can speak with | Request two to three references from similar-size organizations |
Evaluation Process
| Step | Action | Timeline |
|---|---|---|
| 1 | Prepare a scope summary (company size, systems, criteria, observation period) | Day 1 |
| 2 | Request proposals from three to five firms across different tiers | Week 1 |
| 3 | Review proposals for scope understanding, pricing, timeline, and team | Week 2-3 |
| 4 | Conduct brief calls with top two to three firms | Week 3-4 |
| 5 | Check references for finalist firms | Week 4 |
| 6 | Select firm and sign engagement letter | Week 4-5 |
Common Selection Mistakes
| Mistake | Consequence | How to Avoid |
|---|---|---|
| Selecting solely on price | Lowest-cost firm may have less experience or slower timelines | Balance price against experience, timeline, and communication quality |
| Selecting solely on brand | Overpaying for brand recognition your customers do not require | Survey your customers; if they do not specify a firm, brand premium is unnecessary |
| Not checking GRC platform familiarity | Auditor unfamiliar with your platform requires more manual evidence provision | Confirm the auditor has worked with your platform |
| Not getting multiple quotes | No pricing benchmark; may overpay | Get three to five quotes from different firm tiers |
| Selecting too late | Preferred auditor not available; delays timeline | Depends on scope and readiness |
| Not reading the engagement letter carefully | Unexpected fees for scope changes, additional criteria, or re-testing | Review the engagement letter for scope, fees, and change provisions |
Cost Optimization Strategies
How to Reduce Auditor Fees
| Strategy | Potential Savings | How |
|---|---|---|
| Negotiate renewal pricing at signing | Lock in renewal rates | Include renewal pricing terms in the initial engagement letter |
Fee Structures to Understand
| Fee Type | What It Means |
|---|---|
| Fixed fee | Total engagement cost is fixed regardless of hours — most common for SOC 2 |
| Time and materials | Billing based on actual hours; total cost can exceed estimate — less common, more risky |
| Fixed fee with scope change provisions | Fixed fee for defined scope; additional fees if scope changes during the engagement |
| Phased pricing | Separate fees for readiness assessment (optional) and the attestation engagement |
AICPA & CIMA’s SOC overview describes CPA assurance services. It defines the assurance context; it does not establish vendor rankings, market prices, or a particular company’s readiness.
Frequently Asked Questions
How much does soc 2 audit typically cost?
What drives the price difference between audit firms?
Does a more expensive auditor produce a better report?
Tyler Carbone
Managing Director and Cofounder
Tyler Carbone is a Managing Director and Cofounder of Agency and one of the industry's leading voices on governance, risk, and compliance. He holds degrees from Harvard and a JD/MBA from the University of Virginia, and previously worked in cybersecurity at Deloitte. Tyler has helped hundreds of companies operate SOC 2, ISO 27001, HIPAA, and GDPR programs.
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