Ask the customers and other recipients who will use your SOC 2 report which audit firms they accept. Compare proposals for the same systems, legal entities, and report period, with the audit team named. Start with three use-case picks or browse all 69 firms.
Free and anonymous. 3–10 quotes, usually within 48 hours. One call, not five.
The three picks cover evidence reuse across frameworks, SOC 2 alongside FedRAMP, and a required Big Four issuer. Each profile links to dated evidence behind the recommendation.
360 Advanced fits enterprise teams that want to reuse evidence across SOC 2 and other compliance assessments. Its team coordinates separate assessments around shared control evidence. Ask which evidence can be reused, who signs each report or certificate, and what each assessment costs.
Evidence & profile: 360 Advanced → · evidence checked
Schellman fits enterprise cloud platforms that need SOC 2 and FedRAMP assessments. It also offers PCI DSS validation and ISO 27001 certification. Ask which practice handles each service and request separate scopes, fees, and reports or certificates.
Evidence & profile: Schellman → · evidence checked
Deloitte fits enterprises whose report recipient requires a Big Four SOC 2 issuer. Deloitte & Touche LLP provides SOC 1 and SOC 2 services. Check that the recipient accepts the member firm that will sign the report and that the firm meets the engagement’s independence requirements.
Evidence & profile: Deloitte → · evidence checked
The median listed starting estimate for the firms on this page is $40,000; half list $40,000 to $50,000. That range is above the median ballpark for every company size shown.
Give every firm the same written scope so you can compare prices. Include any issuer requirement, the systems in scope, the report period, and each deliverable.
Check that the recipient accepts the CPA firm that will sign the report. Name the engagement lead and check the firm's licence, peer-review evidence, and independence, including any readiness or advisory work.
List the systems, entities, Trust Services Criteria, subservice organizations, and any SOC 1 report. Agree separate dates for the Type 2 observation period, fieldwork, and report delivery.
For each framework, list the practice doing the work, its report or certificate, and its fee. Ask which evidence can be reused and what renewals, retesting, and scope changes cost. Use the proposal questions and audit cost guide to complete the brief.
Browse all 69 enterprise firms ↓
Choose a Big Four auditor when your report recipient requires one. Company size alone does not establish that requirement. If other licensed CPA firms are acceptable, compare experience with your scope, independence, report quality, the proposed team, fees, and delivery dates.
| Type of firm | When to consider it | What to check |
|---|---|---|
| Big Four (Deloitte, PwC, EY, KPMG) | A required Big Four issuer; network coverage for work across countries | The legal member firm, assigned team, fee, and report deadline |
| Full-service CPA (RSM, BDO, Grant Thornton, CBIZ) | SOC reporting alongside accounting and advisory services | Independence, the services offered for each framework, and the audit team |
| Assurance specialist (Schellman, Coalfire, ControlCase) | A practice focused on SOC and security assurance | Whether the recipient accepts the issuer and which practice handles each framework |
Read more about the Big Four versus specialist trade-offs.
Check the CPA firm that will sign the report: its licence, peer-review result, independence, and experience with your scope. Ask who will lead the audit and request a redacted sample report. Read the system description, opinion, control tests, exceptions, and complementary user entity controls (CUECs) to see whether the report answers your recipients' questions.
Check the firm's licence with CPAverify, read the peer-review checks and limits, and use AICPA’s report-review resources. A peer-review Pass does not guarantee the quality of your SOC 2 engagement.
One report can cover several products or legal entities if they fit the documented system and control environment. Shared ownership alone is insufficient. List each product, legal entity, location, and operating team. Ask the auditor which can share a report and which need their own. A customer reading the report should be able to tell whether the service it buys is covered.
Use the system and entity scope questions to record shared controls, separate operations, subservice organizations, and exclusions before requesting prices.
One firm can coordinate both examinations and reuse evidence where the requirements overlap. SOC 1 addresses controls relevant to customers’ financial reporting. SOC 2 addresses selected Trust Services Criteria. The reports remain separate. Ask what evidence can be reused, what must be tested separately, and how the report scopes, observation periods, deliverables, and fees differ.
Read SOC 1 versus SOC 2 before adding either report to the proposal.
Independent directory. Not owned by any audit firm or compliance platform. We don’t sell your details, and your identity stays private.
Big Four, full-service CPA, and assurance-specialist firms. We include firms that confirm they serve enterprises or qualify through our Type 2 price estimate. Check each firm's fit for your scope. Prices are in USD; timelines are in weeks. Sort by entry price or timeline.
Type 1 and Type 2 figures reflect a mix of firm-confirmed numbers, public sources, and our own estimates, refreshed periodically. Actual cost depends on company size, scope, and Trust Service Criteria. See how SOC 2 audit fees compare.
Featured firms pay to appear first. Every firm here cleared our fit bar first; payment cannot add a firm or change its facts.
No firms match that filter. Clear it to see every firm on this page, or get matched anonymously instead.
Tell us your scope once. We match it with firms that run enterprise-scale SOC 1 + SOC 2 engagements and send 3–10 ballparks back side by side.
We match firms to your scope and bring their ballpark quotes back. Free and anonymized.
Questions to settle before you sign, from auditor independence to gaps between reports.
SOC 2 attestation vs consulting · Licensed CPAs issue SOC 2 reports under AICPA attestation standards (SSAE 18). GRC platforms and security consultants can support the work; identify the CPA practice that will issue the report.
Verify credentials · Check the signing CPA practice’s licence, peer-review evidence, and independence before signing. Confirm that the recipient accepts it and that the report addresses subservice organizations.
Pricing and timelines · Figures combine firm-confirmed numbers, public sources, and our estimates, refreshed periodically. Your scope affects the price: Trust Services Criteria, systems, entities, SOC 1, and additional frameworks.
Tell us which systems and entities are in scope, whether you need SOC 1, and which other frameworks you need assessed. Include any subservice organizations. We send the brief to firms that fit. They reply with a ballpark, a timeline, and what makes them different.
Run an audit firm? See how firms get found and shortlisted here — how it works →
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