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SOC 2 service firms

Firms whose own sites confirm SOC 2 examination or readiness services. Confirm which firm issues any attestation report.

20 firms listed · October 2026 snapshot

FedRAMP 3PAOGovRAMP 3PAOPCI QSACMMC C3PAOHITRUST assessorISO 27001 CBSOC 2 services sourced

Aprio, LLP.

Atlanta, GA

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FedRAMP 3PAOGovRAMP 3PAOPCI QSAPCI ASVCMMC C3PAOHITRUST assessorSOC 2 services sourced

ControlCase

Fairfax, VA

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FedRAMP 3PAOGovRAMP 3PAOPCI QSAPCI ASVCMMC C3PAOHITRUST assessorSOC 2 services sourced

RSM US, LLP

Chicago, IL

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FedRAMP 3PAOPCI QSACMMC C3PAOHITRUST assessorSOC 2 services sourced

Tevora

Irvine, CA

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Frequently asked questions

How is this list sourced?

Each SOC 2 practice is supported by the firm's own website. There is no single official SOC 2 registry. A licensed CPA firm issues the attestation report; SOC 2 is not a certificate.

Are these listings endorsements?

No. Compare the firm's services and confirm current status before engaging an auditor.

SOC 2 practice confirmed from each firm's own site; no official SOC 2 auditor registry exists. Firms are listed from official registries, each with its own as-of date. Locations are shown only where the registry or the firm's own site provides them. A listing records registry status, not an endorsement, and directory information may change. SOC 2 is a CPA attestation report, not a certificate. pa.tax is independent: listed firms pay nothing for inclusion, ranking or referrals, and firms are listed alphabetically.

No official SOC 2 auditor list exists. To check that a firm is a licensed CPA firm, use NASBA's CPAverify and the AICPA peer review public file.

For evidence and readiness workflow context, visit ShipReady.