Plan of Action and Milestones: A Complete Guide for Federal Contractors and Agencies

What Is a Plan of Action and Milestones?

A Plan of Action and Milestones (POA&M) is a structured document that identifies security deficiencies in an organization's information system, describes the specific actions planned to address each deficiency, and establishes a timeline for remediation. For federal contractors and agencies, the POA&M is not a nice-to-have — it is a mandatory artifact required across virtually every major federal cybersecurity framework, including FISMA, FedRAMP, CMMC, and NIST SP 800-171.

If your organization handles federal data, competes for Department of Defense contracts, or operates under any federal risk management framework, your POA&M will be reviewed. Assessors, contracting officers, and authorizing officials use it to gauge not only where your gaps are, but whether your organization is capable of managing risk responsibly over time. A poorly constructed POA&M raises more red flags than the deficiencies it documents.

Why the POA&M Matters More Than Most Contractors Realize

Many compliance managers treat the POA&M as a compliance checkbox — something to produce at assessment time and file away. That mindset creates serious risk. The POA&M is a living document. It signals to government reviewers that your organization understands its security posture, has prioritized remediation intelligently, and is actively closing gaps rather than ignoring them.

Under CMMC 2.0, POA&Ms are permitted for certain deficiencies at Level 2, but they carry strict conditions. Items left open too long, or items that should never appear on a POA&M in the first place, can result in conditional certification or denial. Under FISMA and FedRAMP, agencies and cloud service providers must maintain and report POA&M status on a regular basis — monthly in many cases. The document is not filed and forgotten; it is monitored continuously.

For contractors working toward NIST SP 800-171 compliance and a defensible SPRS score, the POA&M is equally critical. Reviewers examining your SPRS cybersecurity assessment will expect your POA&M to align directly with the controls you have not yet fully implemented. Inconsistencies between your System Security Plan and your POA&M are among the most common findings in audits.

POA&M Requirements Across Key Frameworks

FISMA and Federal Agencies

Under FISMA, federal agencies are required to develop and maintain POA&Ms for all information systems. The Office of Management and Budget (OMB) has issued guidance specifying that POA&Ms must include the weakness identified, the responsible office, resources required, scheduled completion dates, and milestones. Agencies submit POA&M data to OMB as part of their annual FISMA reporting cycle.

FedRAMP Cloud Service Providers

FedRAMP requires cloud service providers (CSPs) to maintain a POA&M that is reviewed by their agency authorizing official and, in some cases, the Joint Authorization Board. CSPs must update their POA&M monthly and report on open, closed, and delayed items. Failure to maintain an accurate POA&M can jeopardize a system's Authority to Operate (ATO).

CMMC and NIST SP 800-171

For defense contractors, the POA&M functions as the remediation counterpart to the System Security Plan (SSP). Together, these two documents form the backbone of a defensible compliance posture. Our post on SSP and POA&M as critical components of a strong security program covers how these documents interact in depth. Under CMMC Level 2, a contractor may be granted conditional certification with open POA&M items, but those items must meet specific criteria and must be closed within 180 days of assessment.

The Eight Required Elements of a POA&M

Regardless of which framework applies to your organization, a well-formed POA&M must contain the following elements for each documented deficiency:

1. Weakness or deficiency description — A clear statement of the gap, referenced to the specific control or requirement that is not met.
2. Point of contact — The individual or team responsible for remediation.
3. Resources required — Budget, personnel, tools, or external support needed to close the gap.
4. Scheduled completion date — A realistic, defensible target date for full remediation.
5. Milestones — Intermediate steps that demonstrate measurable progress toward closure.
6. Status — Current state of the remediation effort (e.g., ongoing, delayed, completed).
7. Source of identification — Whether the gap was found through a self-assessment, third-party audit, penetration test, or continuous monitoring.
8. Risk rating — A prioritization indicator that reflects the severity of the gap relative to your overall security posture.

Missing any of these elements does not simply make the document incomplete — it signals to reviewers that your organization lacks the process discipline to manage risk systematically. Our team at Cleared Systems has reviewed hundreds of POA&Ms submitted ahead of assessments, and the most common structural failures are vague deficiency descriptions, missing resource estimates, and milestones that are indistinguishable from the completion date itself.

Common POA&M Mistakes That Create Compliance Risk

Beyond structural gaps, there are several substantive errors that consistently surface in contractor POA&Ms:

• Treating the POA&M as a static document. POA&Ms must be updated regularly. An assessor reviewing a POA&M with dates that are six months past due and no status updates will interpret that as organizational negligence, not administrative oversight.
• Placing items on the POA&M that should never appear there. Under CMMC, certain high-priority controls cannot be deferred to a POA&M. Placing them there anyway creates an immediate finding. Organizations pursuing CMMC, CUI, and DFARS compliance should confirm with a qualified advisor which controls require full implementation before assessment.
• Misaligning the POA&M with the SSP. If your SSP marks a control as "partially implemented" but your POA&M contains no corresponding entry, reviewers will question the integrity of both documents.
• Inflating SPRS scores by omitting POA&M items. Contractors who leave gaps undocumented to preserve a higher self-assessment score are creating significant False Claims Act exposure. The Department of Justice has pursued enforcement actions against contractors with inflated SPRS scores.
• Failing to document completed items properly. Closed POA&M items should include evidence of closure — configuration records, screenshots, policy updates, or test results. Without this, an assessor cannot verify that the gap was actually remediated.

How to Build a POA&M That Holds Up Under Review

The foundation of a credible POA&M is a rigorous risk assessment. You cannot document what you have not found, and you cannot remediate what you have not prioritized. Organizations that invest in a formal federal risk assessment before drafting their POA&M consistently produce more defensible documents than those who compile the POA&M from memory or informal walkthroughs.

Once deficiencies are identified and documented, the remediation planning process should follow a structured sequence:

1. Assign a risk rating to each item based on likelihood and impact.
2. Identify resource dependencies before committing to completion dates.
3. Break multi-phase remediation efforts into discrete, verifiable milestones.
4. Assign ownership at the individual level, not the departmental level.
5. Establish a review cadence — monthly at minimum — to update status and catch delays early.
6. Integrate the POA&M into your broader compliance governance process so it is reviewed by leadership, not just the IT team.

For organizations managing multiple frameworks simultaneously, consider how your POA&M items map across requirements. A gap in multi-factor authentication, for example, may appear as a deficiency under NIST SP 800-171, CMMC, and FedRAMP simultaneously. Documenting it once and mapping it to all applicable controls reduces duplication and demonstrates a mature, integrated compliance program. This is precisely the kind of program architecture our compliance program development service is designed to support.

POA&M Governance: Making It a Program Asset, Not a Paper Exercise

The organizations that manage POA&Ms most effectively treat them as operational tools, not compliance artifacts. That means integrating POA&M review into executive briefings, tying remediation milestones to budget cycles, and holding remediation owners accountable through measurable performance indicators.

For defense contractors managing a complex security program, a regulatory vCISO can provide the ongoing oversight needed to keep the POA&M current, prioritized, and aligned with evolving requirements. This is especially valuable for small to mid-size contractors who lack in-house security leadership but face the same audit scrutiny as large prime contractors.

If your organization is preparing for a CMMC assessment or a NIST SP 800-171 review, the POA&M is one of the first documents your assessor will request. Understanding what POA&M development requires and who mandates it is essential groundwork before you begin the assessment process.

Next Steps for Federal Contractors

A well-maintained Plan of Action and Milestones is evidence of organizational discipline. It tells assessors, contracting officers, and government sponsors that you understand your gaps, you are managing them actively, and you have the processes in place to sustain compliance over time. It is one of the most scrutinized documents in any federal compliance review — and one of the most frequently underprepared.

If your POA&M needs to be built from scratch, restructured to meet current framework requirements, or reviewed before an upcoming assessment, Cleared Systems can help. Request a quote to speak with our compliance team about where your POA&M stands and what it will take to make it assessment-ready.