Auditing, Quality Control, and Independence Standards

SOX Section 103 requires that audits of public companies be performed under PCAOB-established auditing, quality control, and ethics/independence standards. To operationalize it, you must (1) engage a PCAOB-registered audit firm, (2) confirm the firm’s independence, and (3) run a governance and evidence program that proves the audit followed PCAOB standards and your auditor remained independent ¹.

Key takeaways:

• Your obligation is selection, oversight, and independence governance; the auditor’s obligation is to execute the audit under PCAOB standards ¹.
• “Quality control” is primarily the audit firm’s system, but you still need to validate it through due diligence, contracting, and audit committee oversight ¹.
• Evidence wins exams: retain independence confirmations, engagement terms, audit committee minutes, and issue-tracking for audit findings through remediation.

SOX Section 103 is short, but its operational reach is broad because it establishes the PCAOB as the standard-setter for public-company audits: auditing standards, related attestation standards, quality control standards, and ethics standards for registered public accounting firms ¹. For a Compliance Officer, CCO, or GRC lead, the practical question is not “how do we audit?” but “how do we prove our external audit relationship is structured and governed so the audit is performed under the right standards, with real independence, and with accountable quality?”

In practice, operationalizing this requirement looks like a tight set of governance controls around your external auditor: eligibility (PCAOB registration), independence (no prohibited relationships or services), a clear engagement letter and scope, and auditable oversight by the audit committee (or equivalent governance body). You also need clean handoffs between Compliance/GRC, Finance/Controllership, Procurement, and Legal so that auditor onboarding, contracting, and independence checks happen consistently and leave a record.

This page gives you requirement-level implementation guidance: who is in scope, what to build, what evidence to retain, and what exam teams commonly probe, so you can stand up a working program quickly ¹.

Regulatory text

Statutory excerpt: “The Board shall establish auditing and related attestation standards, quality control standards, and ethics standards for registered public accounting firms.” ¹

Operator interpretation (what this means you must do):

• Ensure your public-company audit is performed by a registered public accounting firm operating under PCAOB standards and ethics/independence expectations ¹.
• Create oversight mechanisms (typically through the audit committee) that can demonstrate the external auditor was selected appropriately, remained independent, and executed the engagement under applicable standards ¹.
• Maintain evidence showing auditor eligibility, independence, engagement terms, and governance actions.

SOX Section 103 grants PCAOB authority; your operational job is to ensure your auditor is in that PCAOB-regulated population and that your company’s oversight and records make that true in practice ¹.

Plain-English requirement interpretation

This requirement is about audit legitimacy. If your auditor is not properly registered, not independent, or not operating under PCAOB standards, your financial statement audit and related attestations become vulnerable. Vulnerable means rework, reporting delays, disclosure risk, and reputational damage. It can also create internal control reporting complications when the external auditor cannot rely on management representations or prior work.

Think of SOX 103 as three enforceable expectations you must be able to evidence:

1. Standards are defined (PCAOB does this) ¹.
2. The right firms must follow them (registered public accounting firms) ¹.
3. You must be able to show you engaged and oversaw such a firm appropriately (your governance burden).

Who it applies to (entity and operational context)

Direct applicability (who the statute speaks to):

• Registered Public Accounting Firms because the PCAOB establishes standards for them ¹.

Operational applicability for you (who must execute controls):

• Public companies and their audit committees that retain external auditors for financial statement audits and related attestations.
• CCO/GRC leads responsible for governance, evidence, and control design around third parties that perform regulated assurance work.
• Finance/Controllership as process owners for the audit relationship and ICFR support.
• Procurement and Legal as owners of onboarding, contracting, and conflict-of-interest workflows for the audit firm as a third party.

Typical in-scope moments:

• New auditor selection (RFP, selection memo, audit committee approval).
• Annual audit planning (scope confirmation, engagement letter refresh).
• Any change in services (tax, advisory, or other work) that may create independence concerns.
• Partner rotation / leadership change at the audit firm.
• M&A or restructuring events that change scope, entities audited, or auditor relationships.

What you actually need to do (step-by-step)

Step 1: Confirm auditor eligibility (PCAOB registration)

1. Identify the signing firm and signing office responsible for your audit.
2. Require proof of PCAOB registration during onboarding and at renewal.
3. Document your verification in an “Auditor Due Diligence” file (owner: Finance or GRC).

Execution tip: Treat the auditor as a high-impact third party. Your third-party intake should classify them as “regulated assurance provider” with mandatory governance checkpoints.

Step 2: Implement auditor independence governance (company-side)

1. Collect annual independence representations from the audit firm and key engagement personnel.
2. Run internal conflict checks: map relationships between auditor and your executives, finance leadership, and audit committee members.
3. Control non-audit services intake: route any proposed additional services through a pre-approval workflow owned by the audit committee (or its delegate) before scope changes.
4. Track breaches and near-misses as issues: create an auditable log of independence questions, determinations, and final approvals/denials.

What “good” looks like: You can answer, quickly and with artifacts, “Why is our auditor independent today, and who approved any exceptions?”

Step 3: Contract correctly (engagement letter + audit committee oversight)

1. Engagement letter review by Legal and Finance, with a checklist that confirms:
   • Scope of audit and related attestations.
   • Responsibilities of management vs. auditor.
   • Fee structure and change controls.
2. Audit committee approval recorded in minutes (or a formal consent) before the audit begins.
3. Contract repository controls: ensure the executed engagement letter and amendments are stored in a governed system with version control.

Step 4: Validate audit firm quality control indirectly (due diligence + oversight)

SOX 103 places “quality control standards” on the audit firm ¹. Your burden is to perform reasonable oversight, not to recreate the firm’s QC system.

Actions you can take that hold up in exams:

1. Request the audit firm’s QC overview as part of onboarding/annual planning (high-level description, not proprietary details).
2. Confirm engagement quality reviews exist for your audit (document the firm’s affirmation and where it is referenced in audit planning materials).
3. Escalate recurring audit issues (late PBCs, repeated adjustments, control deficiencies) to the audit committee with corrective actions and target owners.

Step 5: Create an audit evidence pack (your “exam binder”)

Build a single, well-indexed package you can hand to Internal Audit, the audit committee, or external examiners:

• Auditor registration evidence.
• Independence confirmations and conflict checks.
• Engagement letter(s) and amendments.
• Audit committee approvals and minutes.
• Non-audit services pre-approval log.
• Audit planning communications and key deliverables tracking.
• Issues log: audit adjustments, control deficiencies, remediation tracking.

Where Daydream fits naturally: Daydream can run the third-party workflow for your external auditor like any other critical third party: intake, due diligence tasks, independence attestations, contract controls, and an always-ready evidence export for audits.

Required evidence and artifacts to retain

Use this as your minimum evidence list:

Evidence	Owner	What it proves
Proof of PCAOB registration (captured at onboarding/renewal)	Finance / GRC	Auditor is in the regulated population for PCAOB standards 1
Signed engagement letter + amendments	Legal / Finance	Scope, responsibilities, and controlled changes
Annual independence representation letter(s)	Finance / Audit Committee support	Independence process exists and is refreshed
Non-audit services request and pre-approval log	Audit Committee / Finance	Independence is governed, not ad hoc
Audit committee minutes/resolutions approving auditor and fees	Corporate Secretary / Audit Committee	Oversight is active and documented
Conflict-of-interest checks (internal)	Compliance / HR / Legal	Company-side conflicts were assessed
Issues log (audit adjustments, control deficiencies) + remediation tracking	Finance / GRC / Control owners	Problems were tracked to closure

Retention duration should follow your corporate records schedule; align it with financial reporting and audit documentation practices already approved by Legal.

Common exam/audit questions and hangups

Expect these questions from internal audit, external auditors (when assessing governance), and regulators where applicable:

• “Show me evidence the audit firm is registered and approved.” Hangup: evidence exists but is scattered across email threads.
• “How do you ensure independence year-round, not just at signature?” Hangup: no workflow for non-audit services, or approvals occur after work starts.
• “Who can approve additional services and how is that documented?” Hangup: approvals live in informal messages, not audit committee records.
• “How do you oversee audit quality without doing the audit?” Hangup: no structured audit committee touchpoints, no issue trend reporting, no post-audit lessons learned.

Frequent implementation mistakes and how to avoid them

1. Treating the auditor like a normal professional services firm.
   Fix: classify the auditor as a high-criticality third party with mandatory governance gates.

2. Independence checks happen once, then fade.
   Fix: require independence confirmations on a schedule and trigger re-checks on events (new services, leadership changes, M&A scope changes).

3. Non-audit services creep.
   Fix: route all auditor SOWs (including tax work) through a single intake and pre-approval control, with a stop-start rule: no PO until approval is recorded.

4. Audit committee minutes are thin.
   Fix: use a minutes template that captures approval decisions, fee approvals, independence considerations, and significant audit issues.

5. No single source of truth for artifacts.
   Fix: build a controlled “audit relationship” folder with an index and an evidence checklist; manage tasks and attestations in Daydream so you can export an audit-ready pack on demand.

Enforcement context and risk implications

No public enforcement cases were provided in the source catalog for this requirement, so this page does not cite specific cases. The risk is still concrete: if the auditor relationship lacks independence governance, quality oversight signals, or clean documentation, you can face audit delays, restatements, re-tender pressure, and heightened scrutiny from stakeholders. Treat this as a board-level governance risk, not a paperwork exercise.

Practical 30/60/90-day execution plan

Use phases to avoid made-up timelines while still moving fast.

Immediate (stabilize and inventory)

• Identify the in-scope audit firm entity and confirm PCAOB registration evidence is on file ¹.
• Centralize current-year artifacts: engagement letter, independence letter, audit committee approval documentation.
• Stand up a non-audit services intake: one channel, one owner, one log.

Near-term (standardize controls and approvals)

• Publish an “External Auditor Governance SOP” that defines:
  • Who owns registration verification.
  • Who runs independence checks.
  • What requires audit committee pre-approval.
  • Where artifacts live and who maintains the index.
• Implement a repeatable workflow in Daydream: tasks, approvals, and evidence storage mapped to your auditor as a third party.

Ongoing (operational cadence)

• Add a standing audit committee agenda item for independence and audit quality signals (issues, adjustments, control deficiencies, remediation status).
• Run an annual post-audit review: what delayed the audit, what information was missing, and what needs to change in the PBC process.
• Test your evidence pack by doing an internal “mock request” and measuring how quickly you can produce the full set.

Frequently Asked Questions

Does SOX Section 103 apply directly to my company or to my audit firm?

The text is directed at the PCAOB setting standards for registered public accounting firms ¹. Your company operationalizes it by engaging a registered firm and governing independence, contracting, and oversight so the audit is performed under those standards.

What’s the minimum I should have on file to prove compliance?

Keep proof the auditor is registered, the executed engagement letter, documented audit committee approval, and current independence representations. Also keep a log for non-audit services approvals and independence-related decisions.

Are “quality control standards” something my company must implement?

The audit firm must operate a quality control system under PCAOB standards ¹. Your obligation is to perform reasonable oversight through due diligence, governance, and documented escalation of recurring quality problems.

How do we control independence when we also buy tax or advisory services from the audit firm?

Implement a single intake and pre-approval workflow for any additional services and require documented approval before work starts. Treat the approval record as a required artifact, not a courtesy.

Who should own this program: Compliance, Finance, or the audit committee?

Finance typically owns the day-to-day auditor relationship, the audit committee owns approvals and oversight, and Compliance/GRC owns the control design, workflow discipline, and evidence readiness. Assign one accountable owner for the evidence pack.

What’s a practical way to make this repeatable year after year?

Create a standardized auditor onboarding/renewal checklist and run it in a system that tracks tasks, approvals, and artifacts. Daydream is a good fit when you want third-party style governance (intake, attestations, evidence exports) applied to your external auditor.

Footnotes

1. Public Law 107-204