Updated October 2026
C3PAO Cost 2026: $31,234 in DoD's own model
No C3PAO publishes a rate card, so there is no market price for a CMMC Level 2 assessment to report. There is one published figure, and it is DoD's: the regulatory cost analysis behind the 32 CFR Part 170 final rule models the C3PAO engagement at 120 assessor hours for a small entity and 200 hours for an other-than-small entity, at $260.28 per hour. This page shows that math, extends it to larger scopes by extending the hours, and sets out what to ask for in a quote.
Phase 2 of 32 CFR Part 170, which would make C3PAO certification mandatory for Level 2 contractors, was scheduled for November 10, 2026 but DoD suspended it on July 13, 2026 pending a Reform Task Force review. Around 80 C3PAOs are currently authorised on the Cyber AB (Cybersecurity Assessor and Instructor Certification Organization) registry.
The published anchor: DoD's own cost model
DoD had to cost the CMMC programme to publish it, and the arithmetic is printed in the rule. A Level 2 certification assessment is modelled in three phases, and the C3PAO's share is the assessor team's hours across all three at the external service provider rate of $260.28 per hour. Both lines below are DoD's figures, not ours.
| Entity size | Assessor team | Total assessor hours | C3PAO fee |
|---|---|---|---|
| Small entity | 3 people | 120 | $31,234 |
| Other than small | 5 people | 200 | $52,056 |
Source: 32 CFR Part 170 final rule, 89 FR 83092 (15 October 2024), cost analysis at 89 FR 83181-83188. Hours are total team hours, not hours per assessor. These are DoD's modelling assumptions for a regulatory impact estimate; they are not prices any assessor has quoted or agreed to.
Scaling the model to your scope
DoD modelled two entity sizes. Larger contractors need more assessor hours, not a different rate, so the honest way to extend the model is to extend the hours and keep the published rate. The first two rows below are DoD's hours assumptions; the last two are ours, with the multiplier stated so you can disagree with it and redo the sum.
| Scope profile | Assessor hours | Hours x $260.28 |
|---|---|---|
| Under 50 employees, single site, one CUI enclaveDoD small-entity assumption (3-person assessor team) | 120 | $31,234 |
| 50 to 200 employees, one or two sitesDoD other-than-small assumption (5-person assessor team) | 200 | $52,056 |
| 200 to 500 employees, multi-site, complex CUI flowsOur model: 1.6x DoD other-than-small hours | 320 | $83,290 |
| 500+ employees, multi-site, multiple enclavesOur model: 2.4x DoD other-than-small hours | 480 | $124,934 |
Every cell is hours times $260.28, DoD's published external service provider rate. Substitute your own hours estimate or a rate from a quote and the table rebuilds. We publish no per-firm pricing because no C3PAO publishes one, and an estimate of a named firm's undisclosed fee would be a guess wearing a number. See methodology.
The C3PAO fee is not the whole assessment cost
Most of a Level 2 certification assessment is your own people's time, not the assessor invoice. DoD's small-entity decomposition, which sums to $101,752:
| Line item | Small entity | Other than small |
|---|---|---|
| Phase 1: planning and preparing | $20,699 | $26,264 |
| Phase 2: conducting the assessment | $45,509 | $28,600 |
| Phase 3: reporting results | $2,851 | $2,712 |
| Initial affirmation in SPRS | $1,459 | $2,712 |
| C3PAO engagement fee | $31,234 | $52,056 |
| Assessment plus initial affirmation | $101,752 | $112,345 |
| Three-year cost (plus two annual affirmations) | $104,670 | $117,768 |
All figures from 32 CFR Part 170 final rule, 89 FR 83092 (15 October 2024), 89 FR 83181-83188. The rule assumes the contractor has already implemented NIST SP 800-171 Rev 2, so none of these lines include remediation. Remediation is the larger and more variable number: see Level 2 cost.
What drives the variance
Assessor on-site days
Larger CUI boundaries take more days. Hours are the cost lever, and the rate is the part you cannot negotiate much; buy fewer hours rather than a cheaper hour.
Asset count to inventory
Every endpoint, server, network device, and SaaS environment in the CUI boundary requires evidence review. More assets equals more time.
CUI boundary clarity
A clean SSP that clearly defines what is in and out of scope reduces assessor scope-clarification time. A muddled SSP can add 20-40 percent to assessor effort.
Number of physical sites
Multi-site contractors pay for travel days plus per-site evidence review. Two sites typically adds 30-50 percent to a single-site baseline.
Evidence package quality
Pre-organised, indexed evidence reduces re-work cycles. Disorganised evidence can trigger additional assessor follow-up rounds at billable rates.
Prior NIST 800-171 maturity
Contractors with mature NIST SP 800-171 self-assessments (high SPRS scores) hit fewer findings during the C3PAO assessment, reducing remediation re-work loops.
Verifying a C3PAO before you engage
- Pull the official authorised C3PAO list from the Cyber AB. Confirm the C3PAO is currently authorised (not suspended, not pending reauthorisation).
- Confirm the lead CCA assigned to your engagement is on the authorised CCA roster.
- Check the C3PAO's conflict-of-interest declaration. A C3PAO cannot assess a contractor for which the C3PAO has also provided consulting, remediation, or implementation services within the relevant scope window. The Cyber AB COI rules disqualify mixed-role engagements.
- Ask for client references from a contractor of similar size and CUI profile. C3PAOs typically provide 2-3 references on request.
- Verify scheduling availability well ahead of your target certification date. Current C3PAO scheduling backlogs run 6-12 months. The Phase 2 mandate (was November 2026) is suspended pending a DoD review, so there is no fixed lock-in date right now, but the backlog still governs how soon you can actually be assessed.
Reducing the assessment cost
The largest C3PAO-cost savings come from scope tightening before engagement rather than negotiating the daily rate.
Tighten the SSP
A defensible SSP that clearly draws the CUI boundary reduces assessor scope-clarification effort. Invest in SSP quality before engagement.
Cloud enclave to shrink boundary
Moving CUI to a dedicated cloud enclave (GCC High, Azure Government, or a CMMC-aligned platform) pulls assets out of the general IT estate and shrinks the assessment boundary. See remediation.
Pre-assessment readiness review
A readiness review (run by an RPO or internally) catches findings before C3PAO time is on the clock. It is a separate paid engagement, priced per scope, and it pays for itself only if it removes assessor hours you would otherwise have bought.
Indexed evidence package
Pre-organise evidence by NIST SP 800-171 Rev 2 requirement family. Reduces assessor evidence-hunt time, which is billable.