FedRAMP Recognized assessors (3PAOs): rules and independence

Who can perform a FedRAMP 3PAO assessment and what limits them in 2026

FedRAMP accepts attestations only from FedRAMP Recognized assessors, the independent assessment organizations often called 3PAOs. To be recognized, an assessor must hold accreditation under the A2LA Cybersecurity Inspection Body Program and stay compliant with A2LA R311 for FedRAMP. Recognition is not a one-time event: the assessor must pass annual A2LA surveillance, complete a full reassessment at least every 2 years, and perform at least 2 Class B, C or D assessments in that same 2-year window. A provider should confirm an assessor's current recognition status before signing anything, because an attestation from an assessor that is not recognized will not be accepted.

Whether a particular firm can assess a particular provider depends on four things: the provider's impact class (B, C or D), any advisory or consulting work the firm has done for that same cloud service, the firm's ownership structure, and how recently the initial assessment was completed. FedRAMP bars an assessor from performing an independent assessment of a service within 2 years after providing advisory or consulting services for that service, so a firm that helped build the authorization package cannot later attest to it. Assessors must also report foreign ownership, control or influence annually and within 48 hours of any change. Providers should ask each candidate for written confirmation of its consulting history with the service and its current ownership disclosures.

The organization owns its controls and decides what to assess. An implementation partner can prepare systems, configurations and evidence for the assessor, but a partner cannot issue or sign the attestation, and the independent assessor must remain free of perceived or actual conflicts of interest. In practice, this means keeping the implementation team and the assessment team separate, documenting who did what, and checking the assessor's recognition and independence paperwork before scoping begins. Confirm the current class requirements and recency rules directly in the FedRAMP Rev5 rules, since they change between rule versions.

Which independence limits can block an assessor you already use

FedRAMP Recognized assessors are limited by prior work, conflicts of interest, ownership and recognition history, and these limits apply before the assessment starts. Check each one during scoping and vendor selection, because a conflict found after contracting can force a second assessor and a new timeline.

The 2-year consulting bar

An assessor that advised on the same cloud service cannot perform its FedRAMP independent assessment for two years after that advice. The rule, REC-IAS-SEP, covers advisory and consulting work on that service, so a firm that helped design the system, write the System Security Plan or remediate findings may be ruled out. Before signing, ask each candidate for a written list of its prior engagements with your service and confirm the dates.

Independence level set by the AO

SP 800-53A says the authorizing official decides how much independence the assessment needs, based on the system's categorization and risk. The assessor must also avoid perceived as well as actual conflicts of interest. Ask the authorizing official for the required independence level in writing before shortlisting firms, since it determines whether an internal assessment team is acceptable.

Only Recognized assessors count

FedRAMP will not accept attestations from an assessor that is not FedRAMP Recognized. A firm with strong SP 800-53 experience but no recognition cannot produce the assessment that supports authorization. Confirm the firm's current Recognized status on the FedRAMP marketplace and get its listing details before any work begins, not only the contract's description of qualifications.

Annual foreign ownership reporting

Recognized assessors must report foreign ownership, control or influence each year and within 48 hours of any change. Ownership changes such as an acquisition, a new investor or a shift in board control can alter eligibility mid-engagement. Ask for the assessor's most recent annual filing and a commitment to notify you of changes that affect its recognition.

No restoration after second revocation

FedRAMP will not restore recognition to an assessor whose recognition it has revoked twice. A firm with two revocations on record is permanently unavailable, so it cannot be a fallback if the primary assessor loses recognition. Check revocation history for every candidate, and build a second Recognized option into the plan for a critical authorization.

How the 3-month freshness rule shapes your assessor timeline

Plan the assessor engagement backward from your target authorization date, because FedRAMP's rules for Class B, C and D certification require a fresh initial independent assessment completed within the previous 3 months of the application. Under the rule identified as FRC-APP-FIA, the assessment must be performed by a FedRAMP Recognized service, so the window for your submission is set by when that assessment finishes, not when you signed the contract. Start by asking your candidate assessors for their current availability, their assessment start and report delivery dates, and whether they can deliver a report within the period your submission will need. Then count back from the date you intend to submit to find the latest date the assessment can close.

Treat the freshness window as a hard edge on your schedule. Under FRC-APP-USA, an assessment more than 9 months old cannot be refreshed, so an assessment that completes too early cannot be carried forward to a later submission. Instead, you would need a new assessment. Build the schedule so that the assessment closes near the submission date, with enough margin for the assessor's report to be finalized, for your system security plan and evidence to match the tested state, and for remediation of findings to be planned. Confirm with your assessor exactly which dates count as completion for the rule, since the rule text, not your project plan, decides what is accepted.

Delays are the main threat to this plan. If the system changes, the assessor is delayed, or your evidence is not ready when testing starts, the assessment may finish outside the 3-month window, and the engagement effectively restarts into a new assessment cycle with new cost and new time. Ask every assessor to commit in writing to the dates in your scope, and add internal checkpoints before each one. Also confirm the current FedRAMP Consolidated Rules for 2026 text for FRC-APP-FIA and FRC-APP-USA before you fix your dates, because these rules are the authority on how the windows are measured.

Which assessor arrangement fits your situation

This table compares four arrangements for getting an independent FedRAMP assessment, from a Recognized assessor with no prior advisory work to a readiness partner that prepares evidence. Read each row against your service's consulting history, and treat the last column as the questions to settle before signing an engagement letter.

Option	When it fits	What to confirm before signing
Recognized assessor with no prior advisory work on the service	The firm has never advised on your cloud service, so no independence conflict arises under the 2-year consulting bar.	Confirm the firm is FedRAMP Recognized, holds current A2LA accreditation under R311, and has no advisory history with your service.
Firm that consulted on the service within 2 years	Blocked for the independent assessment during the 2-year window after advisory or consulting work on that service.	Ask for a written history of every engagement with your service. Do not use this firm for the independent assessment inside the window.
In-house or affiliated assessment team	Your organization has internal assessors who must still meet FedRAMP independence rules and the authorizing official's required independence level.	Confirm the authorizing official accepts the independence level, that assessors are free of perceived and actual conflicts, and that the team is not recognized as a 3PAO.
Readiness partner preparing evidence only	Systems, controls and documentation need preparation before assessment. The partner builds evidence but cannot perform the independent assessment.	Confirm the partner will not perform or sign the independent assessment, and that its scope is written and separate from the Recognized assessor's engagement.

Who owns controls, who prepares evidence and who attests

The cloud service provider owns the SP 800-53 controls in its system, the decisions about how each control is implemented, and the acceptance of any residual risk. Those decisions sit with named people inside the organization, and they stay there even when outside firms help with the work. NIST's risk management guidance treats control implementation as part of an organization-wide risk process, so accountability for that process cannot be handed to a vendor or an assessor.

Control ownership: Named owners for each control, with authority to change configurations and accept or reject findings.
Risk acceptance: Written decisions on residual risk, signed by the people authorized to make them.
Policies and plans: The system security and privacy plan, policies and procedures reflect the provider's actual operating choices.
Operational evidence: Logs, tickets, change records and access reviews generated by daily operations, not created for the audit.
Independence boundary: The provider may prepare, explain and remediate, but it cannot perform or sign the independent assessment.

Check that every control has an accountable internal owner who can answer assessor questions without relying on a consultant.

What to verify before you sign with an assessor or consultant

A FedRAMP assessment depends on who performs it and whether they are free to judge the system objectively. The checks below help you confirm recognition, independence and scope before any money or system access changes hands, and they separate what your consultant prepares from what the independent assessor tests.

Confirm recognition and accreditation

Ask the firm for its current FedRAMP Recognized listing and its active A2LA Cybersecurity Inspection Body accreditation, including the scope that covers FedRAMP and the R311 requirements. FedRAMP does not accept attestations from firms that are not Recognized, so an expired or narrowed accreditation can invalidate work you have already paid for. Check the dates yourself rather than relying on a logo in a proposal.

Get written confirmation of no advisory work

Ask for a signed statement that the firm has not provided advisory or consulting services for your cloud service in the past 2 years. FedRAMP rule REC-IAS-SEP bars an assessor from performing the independent assessment within that window. Ask the same question about affiliates and subcontractors, because a sister company that wrote your System Security Plan can create the same conflict.

Request the foreign ownership disclosure

Ask for the firm's most recent foreign ownership, control or influence disclosure and confirm when it was last filed. Recognized assessors report FOCI annually and within 48 hours of any change, so ask how the firm will notify you of a change during your engagement. Also ask who holds ownership and control at the parent level, since ownership changes can happen after you sign.

Confirm Rev5 and class coverage

Ask for named team members with Rev5 assessment experience and evidence of work at the impact level you need. Confirm the firm has completed Class B, C or D assessments, since recognition requires a minimum number of these over a two-year period. Ask how many controls the annual independent assessment must include at your class, so you can check that the team's plan covers that set.

Fix the scope in writing

Ask for a written scope statement that lists the cloud service boundary, the controls and enhancements to be assessed, the sampling approach, and the deliverables. Confirm how changes to the boundary after kickoff will be priced and documented. Vague scope is the most common source of schedule slips, and it also makes it harder to show later that the assessor tested what was required.

Separate preparation from testing

Ask which artifacts the consultant will prepare, such as the System Security Plan, policies and configuration baselines, and which the assessor will test independently, such as control evidence, interviews and technical tests. Get this split in the contract. An assessor that writes the artifacts it later tests loses independence, and a consultant that tests its own work leaves gaps in the evidence your authorizing official relies on.

Common questions about FedRAMP 3PAO rules and independence

Can our readiness consultant also be our 3PAO?

Usually not for the same cloud service. FedRAMP bars an assessor from performing a FedRAMP independent assessment of a cloud service within 2 years after it has provided advisory or consulting services for that service. The bar is tied to the specific service, so a firm may still be able to help with a different system. Confirm the exact scope of the bar in the FedRAMP rule text, and ask every candidate firm to state in writing whether it has provided any advisory work on your system in the past 2 years. DeployOpen prepares systems, controls and evidence for assessments, but it does not issue assessment reports, so your independent assessor must be a separate firm that performs the assessment itself.

What is the 2-year rule measured from?

The rule runs from the advisory or consulting work the assessor provided for that cloud service, so the practical question is when your last advisory engagement on the system ended. Read the 2-year window as starting from the end of that work, and record the end date in your engagement files. Consulting that covers only a different service, or general security training, may fall outside the bar, but that judgment belongs to the assessor's conflict review and to FedRAMP's rule text. Ask the assessor to document its conflict check against your service boundary before you sign, and keep that record with your authorization package so the independence question is answered on file.

Can an assessor lose FedRAMP recognition?

Yes. Recognition depends on continuing conditions, and FedRAMP will not restore recognition to an assessor whose recognition it has revoked twice. An assessor must hold accreditation through the A2LA Cybersecurity Inspection Body Program, stay compliant with A2LA R311 for FedRAMP, pass annual A2LA surveillance, and complete a full reassessment at least every 2 years. It must also complete at least 2 Class B, C or D assessments every 2 years. Assessors must report foreign ownership, control or influence annually and within 48 hours of a change. Verify a firm's current recognition status directly with FedRAMP before contracting, and add a contract clause requiring prompt notice if its status changes during your engagement.

Does FedRAMP accept a report from a non-Recognized assessor?

No. FedRAMP will not accept attestations from assessors that are not FedRAMP Recognized, so a report from a firm without that status will not support a FedRAMP package, however thorough the testing. Before you commit budget, confirm that the assessor is Recognized at the time it performs the assessment and that its recognition covers the class of assessment you need. Strong experience with SP 800-53 or with other audits does not replace FedRAMP recognition. The status comes from FedRAMP's recognition process, so check it directly. Ask the assessor for written confirmation of its status, and include that confirmation in your procurement file.

What does a 3PAO engagement cost and what drives it?

No supplied source gives a 3PAO fee or duration, so the reliable answer is the cost components and what to request in a quote. The assessor is paid for planning, testing, interviews, the assessment report and any retesting after remediation. Price moves with the impact level and assessment class, the number of controls in scope, the number and complexity of components and locations, the state of your documentation, and the number of remediation rounds. The initial assessment is a one-time effort, while the annual assessment recurs. Ask each firm for a written breakdown by phase, the controls it will test each year, the assumptions behind its effort estimate, and how it prices retesting and scope changes. Budget separately for your internal staff and any preparation partner.

How far ahead should we schedule the assessment given the 3-month rule?

Schedule the initial independent assessment so that it finishes within the 3 months before you submit the package. FedRAMP requires a fresh initial assessment by a Recognized service completed within the previous 3 months for Class B, C or D certification. Work backward from your target submission date, allowing time for assessor planning, testing and report delivery, plus your remediation and any retesting. Keep the window tight, because an assessment more than 9 months old cannot be refreshed, so a slipped submission can force a new assessment. Ask the assessor for a written schedule with a report delivery date, and keep a buffer for findings. DeployOpen can plan remediation and evidence work to match that schedule within a fixed-scope engagement, but it cannot set the assessor's calendar.

Who decides the assessor independence level under SP 800-53A?

The authorizing official decides the required level of assessor independence, based on the system's categorization and risk, as SP 800-53A describes. Whatever level is set, the assessor must be free of perceived or actual conflicts of interest. Independent assessment services can come from elsewhere in your organization or be contracted externally. FedRAMP's recognition and conflict rules apply on top of the authorizing official's determination, so that decision does not replace them. Ask the authorizing official to document the independence level in writing before you select an assessor. Staff who prepared the system should expect the independence review to examine their role in the assessment, so plan that separation early.

Can DeployOpen issue a FedRAMP attestation for us?

No. DeployOpen plans, implements, hardens and documents self-hosted open-source platforms inside your own infrastructure, and it prepares systems, controls and evidence for compliance assessments. It does not issue audit reports, attestations or certifications. A FedRAMP attestation must come from an independent FedRAMP Recognized assessor, and FedRAMP's process then decides what it accepts. DeployOpen engagements are fixed-scope, with scope, deliverables and timelines agreed in writing before work starts, so you can see which preparation is included. Ask any implementation partner to separate the evidence it prepares from the outputs that only the assessor can produce.

How DeployOpen prepares systems and evidence for an independent assessment

DeployOpen prepares the systems, controls and evidence that an independent assessor will examine, but it does not perform the assessment or issue any report. Independence rules for FedRAMP Recognized assessors (3PAOs) shape how the work is divided, so we agree roles and boundaries in writing before work starts.

How we scope

Scope is agreed in writing before work starts, covering the systems, boundaries and controls in play.
We confirm which assessor relationship applies, so the advisory role stays separate from the independent assessment.
Ask any assessor you are considering to confirm its eligibility and the independence checks it runs before scoping.

How we build

We plan, implement and harden self-hosted open-source platforms inside your own cloud accounts or data centers.
We configure logging, access controls and monitoring so the evidence an assessor needs is produced by the systems themselves.
We run security testing against the environment and document the findings for the organization to track and remediate.

How we hand over

We deliver system documentation, control implementation records and evidence packages as agreed in the written scope.
We do not write the independent assessment report or sign any attestation; the independent assessor does that work.
Ownership of controls, documents and decisions stays with your organization, and we walk your team through the handover.

How we support

Ongoing support, upgrades and continuous testing are available as a retainer after the initial engagement ends.
Retainers can cover evidence refreshes between assessments, so your package reflects current configurations.
Confirm with your assessor which post-assessment activities they expect us to support before the retainer is scoped.