Top 10 Best Soc 2 Audit Services of 2026

Baker Tilly’s SOC 2 delivery centers on turning each control objective into specific control activities and an evidence request list that auditors can evaluate consistently. Engagement teams typically build a system description and management assertion package that aligns the audit scope with the organization’s actual operating environment. The firm’s audit workflow also supports remediation tracking, which helps organizations close gaps between initial findings and subsequent control testing for Type II.

A practical tradeoff is that Baker Tilly’s process requires strong internal participation to assemble evidence quickly and to keep control documentation current during the audit period. Baker Tilly fits best when a security and compliance team needs audit-ready documentation, clear testing guidance, and disciplined coordination across engineering, IT operations, and risk owners.

SOC 2 execution is anchored in control objectives that map to control activities, evidence requests, and control testing artifacts, so audit findings can be traced to specific system description statements. Coalfire’s process fit is strongest when the compliance program needs structured remediation tracking and repeatable evidence collection sequences across people, systems, and repositories. Coalfire also tends to work well for organizations that must coordinate complementary controls and vendor-related considerations without turning scoping into a series of late-stage renegotiations.

A key tradeoff is that Coalfire’s governance discipline for evidence quality can increase lead time for teams with messy access reviews or scattered logging sources. Coalfire is a strong fit when audit teams can provide an evidence repository and control matrix early enough to support evidence request list generation before control testing begins. For companies running SOC 2 alongside rapid product or infrastructure change, the value depends on how quickly changes can be stabilized within the audit period and observation period boundaries.

Crowe’s SOC 2 engagements typically center on mapping control objectives to control activities and driving evidence request cycles that feed auditor review. Teams get practical structure for producing the system description and aligning the management assertion narrative with tested controls. Crowe’s usefulness shows up most when controls span multiple groups or vendors, because evidence ownership and audit-period boundaries can be coordinated without constant ad hoc escalation.

A concrete tradeoff is that Crowe delivery tends to require disciplined internal evidence readiness and clear responsibility for remediation when gaps are identified. Crowe works best for programs that already have stable control procedures and want an auditor-led delivery path from scoping through control testing evidence, rather than a purely reactive audit response.

Crowe also tends to fit organizations that need clear handling of scope boundaries, including how complementary user entity controls are documented and how carve-out decisions are executed in the system description.

BDO is a large, audit-focused firm that delivers SOC 2 Type I and Type II engagements with structured scoping, control testing support, and evidence workflow discipline. Its core work centers on mapping your system description and control activities to the Trust Services Criteria and then driving control testing through a documented evidence collection and request cycle.

RSM delivers SOC 2 assessment services through structured readiness and audit execution that map organizational controls to the Trust Services Criteria, with documentation support around system descriptions and management assertions. Teams get control walkthroughs, risk-based scoping for the audit period, and evidence collection guidance that produces an evidence request list aligned to control objectives.

Sensiba supports SOC 2 engagements with a focus on translating Trust Services Criteria control statements into testable control activities and an evidence package that maps cleanly to the audit scope. The firm’s delivery is oriented around control testing and documentation readiness, including structured evidence request workflows and remediation tracking that keep a control matrix aligned to what auditors actually sample.

Schellman differentiates through a documented SOC 2 delivery workflow that pairs scoping discipline with structured evidence collection for Type I and Type II engagements. Audit teams focus on mapping security and privacy control activities to the system description and control objectives, then running control testing that produces an evidence trail aligned to the audit period.

360 Advanced positions its SOC 2 audit services around tight evidence coordination and structured audit support from scoping through control testing deliverables. The work typically centers on producing a clear system description narrative and mapping control activities to testable evidence artifacts without turning the engagement into a document churn exercise.

Prescient Assurance performs SOC 2 audit and audit support work focused on producing a defensible audit record tied to the Trust Services Criteria. The service typically covers end-to-end engagement mechanics that matter for both Type I and Type II, including control testing coordination and structured evidence requests.

Withum delivers SOC 2 audit services for organizations that need a structured independent service auditor workflow across Type I and Type II engagements. The firm’s audit execution emphasizes consistent control testing logistics, evidence collection coordination, and clear management assertion support through the audit period.