We track 60 SOC 2 auditors whose confirmed service market or Type 2 price range is compatible with enterprise scope: 17 Big Four practices alongside full-service CPA and assurance-specialist firms. Firm-stated segments are authoritative; otherwise membership is a disclosed price estimate. Verify any recipient-specific issuer requirement before choosing.
Free and anonymous. 3–10 quotes in 48 hours. One call, not five.
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.
For enterprise buyers, Schellman fits cloud platforms running SOC 2 beside FedRAMP, PCI, and ISO from $20K; ControlCase covers mid-enterprise multi-framework scope from $35K; Deloitte fits when Fortune 500 procurement wants a Big Four name on the cover. We track 60 enterprise-capable firms.
360 Advanced fits enterprise SOC 2 + multi-framework scope: coordinates shared evidence across frameworks, including an ANAB-accredited ISO 27001 certification body and a FedRAMP-listed 3PAO.
Schellman is the pick for an enterprise cloud or SaaS platform that needs SOC 2 sitting next to FedRAMP, PCI DSS, ISO 27001, and HITRUST under coordinated scope, one of the largest US attestation specialists, PCAOB-registered, and a name enterprise security reviewers already recognize on the report cover.
RSM US is the pick for a middle-market-to-enterprise organization that wants SOC 1 and SOC 2 from one full-service CPA firm, with broad industry coverage and Type 2 estimates from $30K.
Deloitte is the pick when the report recipient explicitly requires a Big Four issuer and the engagement also needs global SOC 1 and SOC 2 delivery across complex entities and subservice organizations.
Coalfire is the option for enterprises where the SOC 2 sits inside a heavier cyber and FedRAMP program, an established assessor for cloud and federal work whose depth in security testing and authorization is a fit when the report is one deliverable among several to demanding reviewers.
BDO USA is the pick for a mid-market-to-enterprise organization that wants broad SOC 1 and SOC 2 delivery across technology, healthcare, and financial services from one full-service CPA firm without Big Four pricing.
ControlCase is the pick for a mid-enterprise that wants SOC 2 coordinated with PCI, ISO 27001, HIPAA, and other frameworks in one engagement. One Audit consolidates those programs under a specialist assessor without Big Four pricing, with Type 2 estimates from $35K.
Choose an enterprise SOC 2 auditor by starting from who relies on the report and what else is in scope, not from price. Confirm the firm can issue SOC 1 alongside SOC 2 on aligned observation periods, that it handles subservice-organization carve-outs precisely, and that its name carries enough recognition to clear your largest customers’ third-party risk review. Then compare named engagement leadership, multi-framework coordination, and a committed report-delivery date in writing.
Not always. A Big Four firm (Deloitte, PwC, EY, KPMG) is the right call when a Fortune 500 customer’s procurement team specifically wants that name on the report cover, or when global entities and combined SOC 1 + SOC 2 argue for one large firm. For many enterprises, a recognized attestation specialist such as Schellman, Coalfire, or ControlCase carries equal credibility with security reviewers at lower cost and faster timelines. The test is whether the reviewer relying on the report will accept the signing firm, not whether the firm is Big Four.
Usually yes. SOC 1 and SOC 2 share a control environment, a system description, and much of the same evidence, so one firm scopes the boundary once, reuses overlapping control testing, and issues both reports on aligned observation periods, which is what your customers’ financial-statement auditors expect at year end. Splitting the two across firms doubles evidence requests and risks conflicting system descriptions. Ask each shortlisted firm to walk through how it coordinates SOC 1 and SOC 2 scope in a single program.
An enterprise proposal should name the signing firm and engagement leadership, define the exact TSCs and whether SOC 1 is bundled, state how subservice organizations are carved out and which CSOCs and CUECs apply, list any frameworks running alongside (HITRUST, FedRAMP, PCI DSS, ISO 27001), and commit to a report-delivery date. It should also explain how recurring evidence is reused at renewal and how new subservice organizations and entities are added to scope. A credible enterprise auditor can describe all of this before fieldwork begins.
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 with confirmed or price-estimated enterprise compatibility. Sponsored firms are paid placements and listed first; the rest are alphabetical. Pricing is in USD and timelines are in weeks. Use the sort controls to re-rank 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.
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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.
These groups describe how the firm is organized, not report quality. Start with explicit recipient requirements and verified scope capability.
| Factor | Best fit | Trade-off |
|---|---|---|
| Big Four (Deloitte, PwC, EY, KPMG) | Fortune 500 reliance, global entities, SOC 1 + SOC 2, name recognition on the cover | Highest cost and longest timelines; you are a small account |
| Full-service CPA (RSM, BDO, Grant Thornton, CBIZ) | SOC work alongside broader accounting and advisory services | Confirm the exact security-framework roles and engagement team |
| Assurance specialist (Schellman, Coalfire, ControlCase) | SOC and security assurance are central practices | Confirm any named-issuer or Big Four requirement with the recipient |
Five selection axes where enterprise auditor choice diverges from the startup speed-and-budget calculus: the report is going to face a Fortune 500 risk team, not just close a first deal.
Enterprise service organizations frequently need SOC 1 (for customers’ financial-statement auditors) and SOC 2 in the same cycle. The right firm scopes one control environment and one system description, reuses testing where the criteria overlap, and aligns observation periods so both reports land together at year end.
Enterprise systems lean on AWS, colocation, and payment processors. The auditor’s carve-out versus inclusive-method decision, plus precise complementary subservice-organization and user-entity controls (CSOCs and CUECs), is what keeps a reviewer from flagging an unaddressed critical vendor.
Ask the relying party whether it requires a named firm, Big Four issuer, recognized security-assurance practice, or preapproval. Record that requirement directly; do not infer it from a prior rejection that may have been about scope, period, opinion, entity, licensing, peer review, or independence.
Enterprises rarely stop at SOC 2. HITRUST, FedRAMP, PCI DSS, and ISO 27001 often run alongside it. A firm that coordinates the shared control set across frameworks avoids duplicated evidence requests and conflicting system descriptions.
The report exists to retire vendor security questionnaires and satisfy MSA and uptime-SLA obligations at scale. Enterprise-experienced firms scope Availability against contractual SLAs and shape the report so it answers the questions your largest customers actually ask.
Four lines: auditor fees, additional-framework work, GRC platform, and internal program time. The wide auditor-fee range is driven by TSC count, SOC 1 bundling, in-scope systems and entities, and how many frameworks run alongside, not by firm markup. Price the same written scope across firms to compare.
$40–200K+
$25–120K
$15–60K
400–900 hrs
Eight questions specific to enterprise auditor selection: brand reliance, combined SOC 1 + SOC 2, subservice-organization carve-outs, procurement deadlines, cost range, judging report quality, bridge letters, and one report versus several.
SOC 2 attestation vs consulting · SOC 2 reports must be issued by licensed Certified Public Accountants under AICPA standards (SSAE 18). GRC vendors and security firms can support an enterprise program, but they cannot issue the attestation report itself.
Verify credentials · Confirm AICPA peer-review status and SSAE 18 attestation authority before signing. For reports that face Fortune 500 reliance, confirm the signing firm and how it handles subservice-organization carve-outs.
Disclaimer · Pricing and timelines shown reflect a mix of firm-confirmed figures, public sources, and our own estimates, refreshed periodically. Enterprise costs vary widely with TSC count, SOC 1 bundling, entity and system count, and additional frameworks.
Tell us your scope: SOC 1 + SOC 2, subservice organizations, entities in scope, and which frameworks run alongside. We send it to enterprise-capable firms that fit. They reply with a ballpark, a timeline, and what makes them different.
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