Working with External Auditors
This article is educational content about working with external auditors and is not professional compliance advice or legal counsel.
An external auditor is coming to assess whether your organization is in compliance with a framework or regulation. The outcome of that audit will influence how your clients view you, whether regulators view you favorably, and possibly whether you can close deals that require audit verification. The relationship between your organization and the auditor can follow two patterns. One is adversarial—auditors as external enforcers checking whether you're doing what you should, and you trying to minimize what problems auditors uncover. The other is collaborative—you and auditors working together to understand your actual compliance posture and identify opportunities for improvement. The collaborative approach works better. Auditors who understand you're genuinely committed to compliance are more cooperative. You, who understand what auditors actually need and help them work efficiently, get faster, smoother audits. That shared interest makes for better working relationships and better outcomes.
Selecting the Right Auditor
For many compliance frameworks, you have the option to choose which audit firm will evaluate you. That choice matters more than many organizations realize. You want auditors with deep expertise in your compliance framework, genuine independence so they're not selling you services on the side, experience in your industry, and genuinely collaborative approach.
When evaluating auditors, ask for references from other companies they've audited. Talk to those references about their experience. Ask whether the auditors were helpful, whether they understood the organization's business, and whether the audit experience was efficient or frustrating. Call a few references yourself; don't rely only on references the auditor provides. Ask about the auditors' specific expertise in your framework. A firm that does a hundred SOC 2 audits per year understands SOC 2 deeply differently than a firm that does ten.
Independence matters. If an audit firm is also selling you compliance consulting, GRC software, or security implementation services, that creates a conflict of interest. They profit from your compliance problems. They might push for more complex remediation to justify larger consulting engagements. Ask explicitly about independence and what services they provide beyond auditing.
Understand their methodology and approach. How do they structure audits? Do they specialize in your industry and understand your business context? Do they take a collaborative approach where they're helping you understand your compliance posture, or an enforcement approach where they're checking boxes? The tone of the engagement matters because it affects how your team responds and how effective the audit is.
Defining Scope and Timeline Clearly
Once you've engaged an auditor, scope definition is critical. Audit scope defines exactly what will be evaluated. Is it SOC 2 Type 2 covering the past twelve months? Which Trust Service Criteria are included? Are all systems in scope or are some excluded? Is vendor infrastructure included or excluded? Are third-party processing activities in scope?
Scope should be documented in an audit engagement letter or contract. Written documentation prevents disagreements about what will be evaluated. It also prevents scope creep, where auditors as they learn more about your environment want to expand what they're auditing beyond what was originally agreed. Clear documentation helps you push back on unreasonable expansions.
Scheduling includes when fieldwork will occur, how long it's expected to take, whether interim testing happens before the main audit, and when the final report will be delivered. Knowing the timeline allows you to schedule staff availability and prepare your organization. A tight timeline means you need to front-load preparation. A longer timeline might allow you to remediate issues as they're identified.
Supporting the Audit Logistics
Auditors will need access to systems, workspace, and staff. Make sure you have practical preparations in place. Provide auditors with workspace where they can work securely. Ensure they have access to the systems they need to evaluate. Create a point of contact who coordinates between your organization and the auditors, answers questions, arranges staff interviews, and manages day-to-day issues. Provide information security requirements if you need them (like NDAs or background checks) but keep them reasonable. Excessive security requirements that prevent auditors from doing their job create friction.
Auditors will need to interview relevant staff. Ensure key people are available when needed. If your IT director is on vacation during the scheduled audit, reschedule or identify a backup. If auditors need to observe a control like a quarterly access review and those reviews happen in months when nobody's available, tell them upfront so they can schedule around it.
Well-managed logistics makes audits run smoothly. Poor logistics—auditors can't access systems, staff aren't available, information security requirements are excessive, documentation isn't organized—creates friction, delays, and can extend the audit timeline.
Responsive Communication Throughout
When auditors need information, provide it quickly. If they ask for evidence, ideally provide it the same day or within 48 hours maximum. When they want to interview someone, make that person available. When they have questions about your environment or a control, answer clearly and completely. Responsiveness shows auditors that you take the audit seriously and are cooperative. Slow responses, information withheld, or staff unavailable creates suspicion.
Communication should also be proactive. If you know there are areas where your controls are weaker than expected or where you're still implementing fixes, tell auditors early. A finding that you've already identified and are remediating is less problematic than a finding that you hid and the auditor discovered. Transparency builds trust.
Manage expectations clearly. If auditors misunderstand something about how your environment works or how a control operates, clarify it. If the audit is taking longer than expected, understand why and work to address bottlenecks. If you identify an issue that might affect the audit timeline, communicate it.
Discussing Findings as They Emerge
As auditors identify findings during fieldwork, discussing them with your team is beneficial. You understand your business and your controls better than auditors do. Sometimes preliminary discussion reveals that what looked like a finding isn't actually a problem because there's context the auditor missed. Sometimes discussion reveals that the auditor misunderstood something. That discussion doesn't mean arguing about validity. It means clarifying so auditors have accurate information.
For findings that are legitimate, preliminary discussion during the audit allows you to start developing remediation plans while the audit is ongoing. By the time the final report is issued, you might already have remediation plans developed or even partially implemented. This demonstrates your commitment to improvement and gives auditors confidence that you'll actually address findings.
Understanding and Responding to the Final Report
The audit results in a formal report. For SOC 2, it's the SOC 2 audit report that will be shared with your clients. For HIPAA, it might be a summary of findings and your required corrective action plan. For ISO, it's an audit report with findings and your required response. You should receive a draft of the report before final issuance, giving you an opportunity to review it and comment if you disagree with findings.
Understanding the report is critical. What findings were issued? How significant are they classified? What's the timeline you're expected to meet for remediation? What evidence of remediation will be required? If the report is relatively clean with few findings, you're in good shape. If the report includes numerous significant findings, you have substantial work ahead and need to allocate resources accordingly.
If you disagree with a finding, you can submit a formal response to be included in the report. Auditors shouldn't issue findings you legitimately disagree with, but if communication failed or auditors genuinely misunderstood something, a response in the report documents your perspective. However, disagreeing with most of the auditor's findings is a red flag that either your compliance posture is weak or the auditor relationship is problematic.
Planning Remediation and Following Up
For findings that were issued, you remediate and provide evidence to auditors that the remediation was effective. Some frameworks require re-testing of significant findings before auditors can issue a final opinion. Some require documentation of remediation with evidence submitted to auditors. Some are addressed in the next audit cycle where you show what you fixed.
Follow-up might happen immediately after the audit if findings are significant and require remediation before you can claim compliance. It might happen between audit cycles where you address findings throughout the year. It might be part of the next audit where you present remediation evidence and auditors re-test.
Documentation of remediation is critical. When you tell auditors "we fixed this finding," they want to see evidence. Show what you changed, when you changed it, and what proof supports the remediation. If you implemented a new policy, provide the policy. If you fixed a process, show it's being followed. If you configured a new control, show the configuration. Clear evidence of remediation allows auditors to sign off on findings.
Using Audits for Continuous Improvement
The best organizations view audits not as compliance exercises but as opportunities for learning and improvement. Audit findings reveal gaps in your controls. Questions auditors asked might reveal areas where controls are confusing or processes aren't clear. Feedback about what's working well shows where you've built strength.
Taking feedback seriously and using it to improve your program is how compliance programs evolve. An auditor's suggestion for control improvement, even if it's not a required finding, might be worth considering if it would strengthen your environment. Auditors typically see multiple organizations and understand what works well across different environments.
Regular audits allow you to measure improvement over time. Fewer findings in consecutive audits shows your remediation and continuous improvement are working. Increasing findings signals you need to strengthen the program. Tracking findings over years shows whether your control environment is getting stronger, staying stable, or degrading.
Organizations that view auditors as partners in improving compliance end up with stronger control environments. Organizations that view auditors as external enforcers to satisfy minimally tend to have weaker programs. The relationship you build with auditors influences the value you get from the audit process.
Building Effective Auditor Relationships
Effective audit relationships are collaborative. Auditors want to understand your actual compliance posture and provide you with useful feedback. You want a fair, thorough audit that gives you confidence in your compliance and identifies areas for genuine improvement. That shared interest creates the foundation for productive working relationships.
Professional respect matters. Treat auditors as experienced professionals who understand compliance and are trying to help you. They're not there to find problems to embarrass you. They're there to evaluate your controls fairly. In turn, you help them do their job by providing information promptly, making staff available, and being transparent about your control environment. You've now learned to work effectively with external auditors: selecting auditors with relevant expertise and independence, defining scope and timeline clearly, providing responsive support throughout the audit, discussing findings constructively, understanding the report, planning and executing remediation, and using audit feedback for continuous improvement. That systematic approach transforms audits from stressful events into productive engagements that strengthen your compliance program.
Fully Compliance provides educational content about IT compliance and cybersecurity. This article reflects general information about working with external auditors. Standards, requirements, and best practices evolve — consult a qualified compliance professional for guidance specific to your organization.