What Is a Plan of Action and Milestones?
A Plan of Action and Milestones, commonly known as a POA&M, is one of the most important documents in your CMMC compliance toolkit. It serves as a formal document that identifies the security weaknesses in your organization’s systems, describes the specific actions planned to correct those weaknesses, and establishes a timeline with measurable milestones for completing each corrective action. Think of your POA&M as both a confession of what you have not yet accomplished and a commitment to getting it done.
For defense contractors pursuing CMMC Level 2 certification, the POA&M plays a critical role. While the ideal scenario is to have all 110 NIST SP 800-171 security requirements fully implemented before your assessment, the reality is that most organizations have gaps that need to be addressed over time. The POA&M provides a structured framework for managing those gaps while demonstrating to assessors and the Department of Defense that you have a clear plan for achieving full compliance.
Under the CMMC 2.0 framework, a limited number of Not Met requirements can potentially be addressed through a POA&M during a conditional certification period. However, the rules around POA&Ms for CMMC assessments are specific and must be understood clearly. This guide walks you through everything you need to know about creating and maintaining an effective POA&M for your CMMC compliance program.
Why the POA&M Matters for CMMC
The Department of Defense recognizes that achieving perfect compliance with all 110 security requirements is a journey, not an instantaneous event. The POA&M bridges the gap between your current security posture and your target state. It provides transparency to the government about what risks exist and what you are doing to mitigate them.
From a practical standpoint, the POA&M serves several important functions. First, it demonstrates due diligence and good faith effort toward compliance. Even if your organization has not fully implemented every requirement, a well-crafted POA&M shows that you understand the gaps, have allocated resources to address them, and have a realistic timeline for completion.
Second, the POA&M provides accountability. By documenting specific responsible parties, planned actions, and target dates for each gap, your organization creates internal accountability for compliance progress. This prevents gaps from being overlooked or indefinitely deferred and ensures that compliance activities remain a priority amid competing business demands.
Third, the POA&M supports risk management. Each entry in your POA&M should include an assessment of the risk associated with the gap. This risk-based approach helps you prioritize your remediation efforts, focusing first on the gaps that pose the greatest risk to CUI protection and addressing lower-risk items according to their relative importance.
Under CMMC 2.0, organizations that achieve a conditional certification based on a POA&M have 180 days to close all POA&M items and demonstrate full compliance. Failure to close POA&M items within this window results in loss of the conditional certification. This makes the POA&M not just a planning document but a binding commitment with real consequences.
POA&M Structure and Required Elements
An effective POA&M contains several essential elements for each identified weakness. Understanding these elements and documenting them thoroughly is critical for both internal management and external assessment purposes. Every POA&M entry should include the following components.
The weakness identification section describes the specific security requirement that is not fully met and the nature of the gap. This should reference the specific NIST SP 800-171 requirement number and provide a clear description of what is missing or incomplete. For example, rather than simply stating that requirement 3.5.3 is not met, you should explain that your organization has not yet implemented multi-factor authentication for remote access to all non-privileged accounts.
The risk assessment section evaluates the potential impact and likelihood of exploitation associated with the gap. Use a consistent risk rating methodology such as High, Moderate, or Low to categorize each weakness. Consider what could happen if an attacker exploited this gap and how likely that exploitation is given your current threat environment. This risk rating drives your prioritization and helps justify your remediation timeline.
The planned remediation actions section describes the specific steps your organization will take to address the weakness. These actions should be detailed enough to be actionable and measurable. Instead of vague statements like “implement MFA,” describe the specific solution you plan to deploy, the systems it will cover, the configuration changes required, and the testing procedures you will follow.
The responsible parties section identifies by name or role the individuals accountable for completing each remediation action. Assigning clear ownership prevents the diffusion of responsibility that often causes compliance activities to stall. Include both the primary responsible party and any supporting resources needed for implementation.
The milestones and timeline section establishes specific, measurable checkpoints and target completion dates for each remediation action. Break complex remediation efforts into intermediate milestones that demonstrate progress and allow for course correction if needed. For example, an MFA implementation might include milestones for solution selection, procurement, pilot deployment, full deployment, and verification testing.
The resource requirements section documents the budget, personnel, technology, and other resources needed to complete each remediation action. This information is essential for securing management support and ensuring that compliance activities are adequately funded and staffed.
The status tracking section provides the current status of each POA&M item, including progress toward milestones and any changes to the planned timeline. This section should be updated regularly to reflect the actual state of remediation efforts.
Step-by-Step Guide to Creating Your POA&M
Creating an effective POA&M is a systematic process that begins with your gap assessment and culminates in a living document that guides your compliance activities. Follow these steps to develop a POA&M that serves both your internal management needs and your CMMC assessment requirements.
Step one is to compile your gap assessment results. Review your assessment against all 110 NIST SP 800-171 requirements and identify every requirement that is not fully implemented. Be thorough and honest in this evaluation. Understating your gaps will only create problems during your formal assessment. For each gap, document the current state of implementation and what is needed to achieve full compliance.
Step two is to assess and prioritize risks. For each identified gap, evaluate the risk to CUI confidentiality. Consider the sensitivity of the CUI you handle, the threat environment for your industry, the potential impact of a security incident exploiting this gap, and any compensating controls that partially mitigate the risk. Assign a risk rating to each gap and use these ratings to establish your remediation priority order.
Step three is to define remediation actions. For each gap, develop specific, actionable remediation steps. Engage your IT team, security personnel, and any external consultants to ensure that the planned actions are technically feasible, appropriately scoped, and sufficient to achieve full compliance with the requirement. Document any dependencies between remediation actions that could affect sequencing or timing.
Step four is to establish milestones and timelines. Create a realistic schedule for completing each remediation action. Consider resource availability, procurement lead times, testing requirements, and potential complications. It is better to set realistic timelines and meet them than to set aggressive timelines that you consistently miss. For CMMC purposes, remember the 180-day POA&M closure requirement when setting your schedules.
Step five is to assign responsibility and secure resources. For each POA&M item, designate a responsible party and confirm their commitment to the timeline. Obtain management approval for the resources needed to execute the plan, including budget allocations, personnel assignments, and any procurements. Without dedicated resources and clear accountability, even the best-planned POA&M will fail to produce results.
Step six is to document everything in a standardized format. Use a consistent template that captures all required elements for each POA&M entry. Many organizations use a spreadsheet format with columns for each element, which facilitates sorting, filtering, and reporting. Ensure the document is version-controlled and that changes are tracked over time.
CMMC-Specific POA&M Rules and Limitations
The CMMC 2.0 framework imposes specific rules on the use of POA&Ms that defense contractors must understand. Not all requirements can be placed on a POA&M, and the consequences of not closing POA&M items within the required timeframe are significant.
Under the current CMMC rules, organizations undergoing a Level 2 assessment can receive a conditional certification if they have a limited number of requirements on their POA&M. However, certain requirements are considered so fundamental to CUI protection that they cannot be placed on a POA&M. These typically include requirements related to multi-factor authentication, FIPS-validated encryption, and other critical security controls. Your C3PAO can provide specific guidance on which requirements are POA&M-eligible.
The 180-day closure requirement is non-negotiable. Organizations that receive a conditional certification must close all POA&M items and submit evidence of closure within 180 days. If items are not closed within this window, the conditional certification is revoked, and the organization must undergo a new assessment. This makes it imperative that your POA&M timelines are realistic and that you have the resources committed to meet them.
Additionally, each POA&M item must have a clear and achievable remediation plan. Assessors will evaluate not only whether you have identified your gaps but also whether your planned actions are sufficient and realistic. Vague or unrealistic POA&M entries may result in the assessor determining that the requirement cannot be conditionally met, which would prevent certification even on a conditional basis.
Maintaining and Updating Your POA&M
A POA&M is not a document you create once and file away. It is a living document that requires regular attention and updates to remain accurate and useful. Establish a routine for POA&M maintenance that includes the following activities.
Conduct monthly POA&M reviews with all responsible parties. During these reviews, assess progress against milestones, identify any obstacles or delays, update status information, and adjust timelines if necessary. Document the outcome of each review session to create a record of ongoing management attention to compliance activities.
When POA&M items are completed, document the completion thoroughly. Record the date of completion, describe the actions taken, note any deviations from the original plan, and preserve evidence of the implemented control. This evidence will be needed during your CMMC assessment to demonstrate that previously identified gaps have been adequately addressed.
Add new POA&M items as they are identified. Your gap assessment is not a one-time event. As your environment changes, new vulnerabilities are discovered, or additional requirements are identified, add them to your POA&M promptly. A comprehensive and current POA&M demonstrates mature security management practices.
Report POA&M status to senior management regularly. Executive visibility into compliance progress is essential for maintaining organizational commitment and securing ongoing resources. Consider including POA&M metrics in regular management reporting, such as the number of open items, items closed in the current period, overdue items, and the overall risk profile of remaining gaps.
Common POA&M Mistakes to Avoid
Organizations frequently make mistakes with their POA&Ms that undermine their effectiveness and can negatively impact their CMMC assessments. Being aware of these common pitfalls helps you avoid them in your own compliance program.
The most common mistake is being too vague in describing either the weakness or the planned remediation. Entries like “need to improve access controls” or “will address this requirement” provide no useful information and suggest a lack of genuine commitment to remediation. Be specific about what is missing and exactly what you plan to do about it.
Another frequent mistake is setting unrealistic timelines. While it may be tempting to show aggressive schedules, consistently missing deadlines demonstrates poor planning and can erode confidence in your compliance program. Base your timelines on realistic assessments of the work required, resource availability, and potential complications.
Failing to update the POA&M regularly is also a common problem. A POA&M that has not been updated in months tells assessors that compliance is not a priority in your organization. Maintain regular review and update cycles, even when progress is slow, to demonstrate ongoing attention and commitment.
Finally, many organizations fail to maintain adequate evidence of completed remediation actions. When a POA&M item is closed, the evidence supporting that closure must be preserved and readily accessible. Screenshots, configuration files, policy documents, and test results should all be collected and organized for each completed item.
POA&M Template and Tools
While there is no single mandated format for CMMC POA&Ms, the document should be comprehensive, well-organized, and easy to maintain. Many organizations find that a spreadsheet format works well, with each row representing a single POA&M item and columns capturing all required elements.
A basic POA&M template should include columns for a unique identifier for each item, the NIST SP 800-171 requirement number, a description of the weakness, the risk rating, planned remediation actions, responsible party, milestones with target dates, required resources, current status, actual completion date, and evidence references.
At Easy Compliances, our CMMC Compliance Toolkit includes a professionally designed POA&M template that incorporates all required elements and best practices discussed in this guide. The template is pre-populated with the 110 NIST SP 800-171 requirements and includes built-in tracking features that make it easy to manage your remediation progress. Combined with our training courses that teach you how to assess each requirement and develop effective remediation plans, our toolkit provides everything you need to create and maintain a POA&M that supports your CMMC certification goals.