Deloitte
Deloitte is one of the Big Four global professional-services networks. Buyers choose it when a customer contract, board, investor, or multi-jurisdiction footprint explicitly requires a Big Four issuer on the report.
At a glance
| Headquarters | New York, New York |
|---|---|
| Founded | 1845 |
| Firm type | Big Four professional-services network |
| Type 2 planning range | $60K–$400K (published planning range (Sept 2026)) |
| Typical fieldwork window | 6–18 wk |
| Frameworks (per firm) | SOC 1, SOC 2, ISO 27001, PCI DSS + global assurance network |
| Official website | deloitte.com |
Best fit
Large enterprises and public companies whose stakeholders require a Big Four name.
Before you engage
The highest pricing and longest scheduling in this directory — only pay the premium with a real requirement.
Questions about Deloitte
Is Deloitte a licensed firm that can issue SOC 2 reports?
Deloitte is listed here as a Big Four professional-services network. SOC 2 reports must be issued by a licensed CPA firm under AICPA attestation standards — confirm the firm's current license status and which legal entity will sign your report before engaging.
What frameworks does Deloitte support?
Per the firm's public materials: SOC 1, SOC 2, ISO 27001, PCI DSS + global assurance network.
How do I get pricing from this firm?
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