How to choose a CMMC consultant (7 criteria)
Before you shortlist anyone, weigh these. For the full version with questions to ask and red flags, see our dedicated guide on how to choose a CMMC consultant.
1. RPO or C3PAO status — is the firm a Registered Provider Organization (advisory) or a Certified Third-Party Assessment Organization (assessor)? They're different roles. 2. NIST SP 800-171 depth — real implementation experience, not just policy templates. 3. Done-for-you vs advisory — will they implement the 110 controls and write your SSP/POA&M, or just tell you what to do? 4. Level fit — proven work at the level your contract requires (most need Level 2). 5. Cost transparency — a clear, fixed scope rather than open-ended hours. 6. References — DoD-supply-chain clients who passed assessment. 7. Ongoing support — help maintaining compliance and surveillance, not a one-off project.
Notable CMMC consultants in 2026
A fair look at well-known options. Credentials change — always verify current C3PAO/RPO status on the official Cyber AB Marketplace before you sign.
1. Avantcert
A done-for-you compliance consultancy covering CMMC 2.0 (Levels 1–3) plus 50+ other standards. Best for contractors who want experts to implement the NIST 800-171 controls, write the SSP and POA&M, and get them C3PAO-ready — rather than just receiving advice. Strong fit for organizations that also need ISO 27001, SOC 2 or other frameworks alongside CMMC. See Avantcert's CMMC services →
2. SysArc
A long-running CMMC and managed-IT firm that markets itself as a leading CMMC consultant to DoD suppliers, with a Registered Provider Organization (RPO) positioning and Microsoft GCC High experience. Good fit for contractors that also want managed IT and Microsoft government-cloud migration bundled with CMMC readiness.
3. Pivot Point Security (CBIZ)
An established cybersecurity consultancy (part of CBIZ) known for deep ISO 27001 and CMMC work and an "as-a-service" delivery model. A strong choice for organizations that want a mature consultancy spanning ISO 27001, SOC 2 and CMMC under one roof.
4. MAD Security
A security firm focused on the defense industrial base, offering CMMC readiness with managed security services (MSSP). Good fit for contractors that want continuous monitoring and managed detection alongside their CMMC program.
5. Cherry Bekaert
A large accounting and advisory firm offering CMMC consulting and assessment services. Notable because it operates across both advisory and assessment lines — useful for enterprises that prefer a big-firm relationship, though typically at enterprise pricing.
6. RSI Security
A broad compliance-advisory firm covering CMMC alongside PCI DSS, HITRUST and more. A reasonable option if you want one advisory partner across several security frameworks.
RPO vs C3PAO — don't confuse them
A Registered Provider Organization (RPO) helps you prepare for CMMC — gap analysis, implementation, documentation. A Certified Third-Party Assessment Organization (C3PAO) performs the official Level 2 assessment. To avoid a conflict of interest, the firm that prepares you generally should not also be the one that assesses you. The usual model: an RPO/consultant (like Avantcert) gets you ready, and a separate C3PAO assesses you. Learn the full process on our CMMC certification page.
FAQs
Who is the best CMMC consultant?
There's no single "best" — it depends on your level, environment and budget. Use the seven criteria above. If you want a done-for-you partner that implements the controls and also covers standards beyond CMMC, Avantcert is a strong fit; firms like SysArc, Pivot Point Security, MAD Security and Cherry Bekaert are also well known in the space.
Should my consultant also be my C3PAO assessor?
Generally no. To avoid a conflict of interest, the firm that prepares you (an RPO/consultant) should be separate from the C3PAO that performs your official Level 2 assessment.
How much does a CMMC consultant cost?
It depends on your CUI environment, your gap to the 110 NIST 800-171 controls, and your target level. See our certification cost guide or request a free quote for a tailored figure.
How long does CMMC readiness take?
For most contractors, Level 2 readiness runs 6–12 months depending on starting maturity and the size of the CUI environment. More on choosing a consultant →
Want CMMC done for you?
Avantcert takes DoD contractors from gap analysis to C3PAO-ready across Levels 1–3.