CMMC In-House vs Outsourced: Three-Year Cost Comparison
Three models for achieving and maintaining CMMC compliance: fully in-house, fully outsourced to an MSSP, or a hybrid approach. Each has different cost profiles, trade-offs, and ideal use cases based on company size.
The Three Models
In-House
Hire a CISO and build an internal security team. Full control over compliance program, tooling, and incident response. Highest cost but deepest institutional knowledge.
Hybrid (Recommended)
Internal compliance lead manages the program while an MSSP provides 24/7 monitoring, SIEM management, and technical security operations. Best balance of cost and control.
Outsourced (MSSP)
MSSP handles everything: monitoring, incident response, compliance reporting, and assessment preparation. Lowest cost but least internal control and knowledge retention.
Three-Year TCO Comparison
| In-House | Hybrid | Outsourced | |
|---|---|---|---|
| Year 1 Staffing | $200K - $350K | $100K - $180K | $36K - $96K |
| Year 1 Tooling | $50K - $150K | $30K - $80K | Included in retainer |
| Year 1 Assessment + Remediation | $80K - $300K | $80K - $300K | $80K - $300K |
| Year 1 Total | $330K - $800K | $210K - $560K | $116K - $396K |
| Year 2 (Maintenance) | $250K - $400K | $130K - $250K | $50K - $120K |
| Year 3 (Maintenance + Re-cert Prep) | $280K - $450K | $150K - $280K | $60K - $140K |
| Three-Year Total | $860K - $1.65M | $490K - $1.09M | $226K - $656K |
Pros and Cons
| Factor | In-House | Hybrid | Outsourced |
|---|---|---|---|
| Cost | Highest | Moderate | Lowest |
| Control | Full | High | Limited |
| Speed to Certification | Slow (hiring) | Moderate | Fast |
| 24/7 Coverage | Expensive to staff | MSSP provides | MSSP provides |
| Knowledge Retention | Excellent | Good | Poor |
| Scalability | Limited by headcount | Flexible | Highly scalable |
| C3PAO Assessment Prep | Deep understanding | Shared responsibility | MSSP-dependent |
Decision Framework by Company Size
A CISO costs more than your entire MSSP retainer. Use an MSSP for monitoring and hire a part-time compliance consultant for assessment preparation. Total: $36K to $96K/year plus consulting fees.
Hire an internal compliance manager or vCISO ($100K to $150K) to own the program, and contract an MSSP for 24/7 technical monitoring ($96K to $180K/year). The internal lead knows your environment while the MSSP handles the heavy lifting.
Build a 2 to 3 person security team led by a CISO ($200K to $350K total). Use MSSP only for specialized capabilities you cannot staff (24/7 SOC, threat hunting, pen testing). Total: $250K to $500K/year.
MSSP Selection Checklist
- Verified experience with CMMC Level 2 assessment preparation (ask for client references)
- 24/7 SOC coverage with defined response time SLAs
- SIEM management included in the retainer (not billed separately)
- Vulnerability scanning on at least a monthly cadence
- Incident response capabilities aligned with NIST 800-171 requirements
- Evidence collection and reporting compatible with C3PAO expectations
- Clear contract terms: scope of services, data ownership, termination process
- Insurance: cyber liability and errors and omissions coverage
- Their own security certifications (SOC 2 Type II at minimum)