Choosing a FedRAMP 3PAO

Your Third Party Assessment Organization (3PAO) is the single largest variable in your FedRAMP authorization cost and timeline. A well-matched 3PAO with strong SAR quality can cut agency review time significantly. A poor fit can add 6-12 months and hundreds of thousands in additional cost.

Section A. Fee Register

3PAO fee ranges by impact level

FedRAMP Low

Initial$100,000 - $200,000

Annual ConMon$30,000 - $60,000

Narrower scope; fewer controls to test. Some 3PAOs charge less for Low due to simplified documentation and testing.

FedRAMP Moderate

Initial$350,000 - $650,000

Annual ConMon$80,000 - $150,000

Most competitive market segment. Wide variation based on system complexity, number of components, and boundary scope.

FedRAMP High

Initial$700,000 - $1,200,000+

Annual ConMon$150,000 - $300,000+

Fewer 3PAOs are accredited for High impact. Fees are higher and less negotiable. Cleared-personnel requirements may apply.

Section B. Evaluation Criteria

Eight criteria for selecting a 3PAO

Apply these criteria during 3PAO shortlisting and final selection. Importance is graded as Critical, High, or Medium.

FedRAMP Accreditation Status

Critical

Verify the 3PAO's accreditation status on the FedRAMP Marketplace. Accreditation is granted by A2LA (American Association for Laboratory Accreditation) and must be current. Lapsed accreditation means assessments cannot be accepted.

Experience at Your Impact Level

Critical

3PAOs vary significantly in experience across Low, Moderate, and High impact levels. High impact assessments require specialized expertise in national security controls. Ask specifically how many authorizations at your target level the 3PAO has completed in the past 24 months.

Industry Vertical Experience

High

Healthcare, financial services, and defense-adjacent systems have nuanced control implementations. 3PAOs with experience in your sector understand common implementation patterns and edge cases, reducing back-and-forth during assessment.

Assessment Team Composition

High

Ask who will actually perform the assessment. Some 3PAOs sell with senior personnel and deliver with junior staff. Request the CVs or bios of the specific assessment team, including their individual certification credentials.

Capacity and Scheduling

High

Experienced 3PAOs are heavily booked. Ask about current queue depth and estimated start date. A 3PAO quoting a very fast start may be understaffed or under-experienced. Expect 6-10 weeks scheduling lead time for quality 3PAOs.

SAR Quality and Agency Acceptance

Medium

Ask for anonymized examples of Security Assessment Reports or agency references. SAR quality varies significantly. Poorly written SARs with ambiguous findings result in lengthy agency reviews and revision cycles.

Remediation Support

Medium

Some 3PAOs offer remediation guidance as part of the assessment scope; others only identify findings. Clarify the boundary. A 3PAO cannot also serve as your compliance consultant for the same system (independence requirement).

ConMon Ongoing Relationship

Medium

The annual assessment subset during continuous monitoring is typically performed by the same 3PAO. Evaluate whether you want to maintain this relationship for 5+ years and factor relationship continuity into your selection.

Section C. Questions for 3PAO Candidates

Ten diligence questions

01.How many authorizations at this impact level has your team completed in the past 24 months?
02.Who specifically will lead the assessment, and can we review their credentials?
03.What is your current queue depth and estimated start date?
04.What is your process when you discover a High finding that was not anticipated?
05.Can you provide two or three agency references from recent authorization packages?
06.What do you include in your SAR - do you use pass/fail or graduated findings?
07.How do you handle disputed findings?
08.Do you offer continuous monitoring support, and what is that structured as?
09.Are there any conflict-of-interest constraints that would limit what other support you can provide?
10.How do you handle significant system changes that occur during the assessment period?

Note D / Independence Rule

3PAOs cannot also serve as your consultant

A 3PAO must maintain independence from the Cloud Service Provider it is assessing. The same firm cannot also serve as your FedRAMP compliance consultant, write your SSP, or implement controls for the same system. This is enforced by A2LA accreditation rules. You need separate vendors for consulting support and 3PAO assessment services. Some firms structure separate divisions; verify the personnel are fully isolated.

Next step

Calculate your total FedRAMP budget

3PAO fees are one of six major cost buckets. Use the worksheet to estimate your complete authorization investment.

Open the Cost Worksheet →Phase-by-phase timeline