How much does CMMC cost a small defense contractor?

Is CMMC worth the cost? Do we actually need to be compliant?

by Mustafa Mukhtar, MBA, ITIL
Consultant/Content Contributor, E-N Computers
20+ years of experience in IT management, project planning,
enterprise systems and user support

Updated June 16, 2026

For most small defense contractors, CMMC Level 2 certification runs $100,000–$120,000 in the first year — licensing, implementation, documentation, and audit fees combined. After that, expect your IT and security budget to climb 50–100% over what you spend today.

Whether that’s worth it comes down to one thing: how much of your revenue depends on defense work. If DoD contracts are core to your business, CMMC is the cost of entry, not an optional upgrade. With $300,000 or more in potential contract value on the line, the math usually works. If you’re chasing one small subcontract, it often doesn’t.

A few contractors assume the government will cover the cost. It’s not that simple. On cost-reimbursable contracts, some compliance expenses can be billed directly or indirectly if they meet allowability rules. But most defense work is fixed-price, which means you build those costs into your bid upfront and recover them over time. That helps long-term, but it does nothing for the cash you need on day one.

A handful of offset programs can lower the net cost: state grants, tax credits, and free federal resources. In our experience they’re helpful but inconsistent, and they rarely cover a meaningful share of the total.

Cost recovery works best for companies with steady DoD revenue, because they can spread compliance costs across multiple contracts and recover them through indirect rates. Smaller subcontractors with limited defense work don’t get that advantage. The costs hit harder, margins shrink, and some end up reconsidering whether defense work is worth staying in at all.

E-N Computers is a Virginia-based managed IT provider supporting defense contractors across the country. Two of our engineers are CMMC Registered Practitioners with the Cyber AB, and ENC is a Registered Practitioner Organization (RPO). We help small and mid-sized contractors work through CMMC readiness every day — so the numbers above come from real projects, not estimates.

QUICK ANSWER:

How much does CMMC cost a small defense contractor?

For a 20–25-person defense contractor, first-year costs typically run $100,000–$120,000. After that, expect your IT budget to be 50–100% higher than it is today.

The single biggest cost variable: your Microsoft 365 licensing tier. Commercial, GCC, or GCC High — that decision alone can swing your annual spend by tens of thousands of dollars.

CMMC is live — and showing up in contracts
Do you actually need to be certified?
Most contractors land at Level 2 — and that’s where costs spike
What drives the cost: the real breakdown

CMMC is live — and showing up in contracts

CMMC 2.0 began appearing in DoD solicitations in late 2025. It will continue phasing into contracts over the next several years. This is no longer theoretical — contractors are seeing real consequences for non-compliance, including lost bids, delayed awards, and pushback from prime contractors.

CMMC certification tells the DoD three things: you’ve implemented the required cybersecurity controls, you can protect Controlled Unclassified Information (CUI), and you’re treating security as an ongoing operation, not a one-time project.

Cyber threats targeting the Defense Industrial Base are increasing, and the DoD is enforcing accountability across all contractors — not just primes.

Do you actually need to be certified?

It depends on what you’re doing. If you don’t handle defense contracts — CMMC certification is likely unnecessary. The investment won’t pay off. If you’re pursuing or maintaining DoD work — certification will be required. The level you need depends on what type of information you handle.

Most contractors land at Level 2 — and that’s where costs spike

Level 1 — Federal Contract Information (FCI) 15 basic security controls, annual self-assessment. Level 1 is achievable with solid baseline IT practices and stays relatively low-cost.

Level 2 — Controlled Unclassified Information (CUI) 110 controls aligned with NIST SP 800-171. Most contractors fall here. Level 2 requires a third-party assessment every three years and annual self-affirmation. This is where the cost curve gets steep — not because of the audit itself, but because of the tooling, documentation, and ongoing operational work required to stay compliant.

Level 3 — High-priority CUI Based on NIST SP 800-172, with government-led assessments. Relevant to a small subset of contractors, and not a factor for most small businesses.

What drives the cost: the real breakdown

There are two main cost categories: your IT and compliance program, and the assessment itself. Your IT setup will likely need significant changes.

If you already have strong security practices, Level 1 may need minimal work. Level 2 is a different story.

Real-world example — 20–25 user defense contractor, Level 2:

Cost category	Estimate
Microsoft 365 GCC High licensing	~$25,000/year
Migration and implementation	$35,000–$55,000 (one-time)
Compliance documentation and prep	~$45,000 (one-time)
Audit by a C3PAO	~$20,000-$100,000
Total first-year investment	~$120,000–$220,000

Why Microsoft 365 licensing is one of the biggest line items for CMMC

Many contractors have to move off commercial Microsoft 365 to GCC or GCC High — and that’s not a small jump. Commercial licensing is the baseline. GCC typically runs 10–15% more. GCC High — which may be required if you handle ITAR-controlled data or certain CUI categories — adds 40–70% on top of commercial rates. For a 20–25 user company, that licensing delta alone can be $25,000/year.

Not sure which tier you need? The decision depends on your contract language, whether you handle ITAR-controlled data, and what your prime contractor requires. We put together a full decision guide — including a 5-question test and a downloadable worksheet — at Do you need GCC High for CMMC?

The three other major CMMC cost drivers in your IT setup

Consulting and compliance support — Level 2 requires ongoing engagement. Monthly or weekly, not quarterly.

Security tools — multi-factor authentication, endpoint detection and response, logging/SIEM, encryption, access control. These aren’t optional checkboxes.

Internal time — documentation (System Security Plan, policies), continuous monitoring, staff training, audit prep. Most organizations underestimate this. Compliance is an ongoing operational function, not a project with an end date.

CMMC assessment costs

The certification assessment — conducted by a certified C3PAO — runs $50,000–$75,000 for a standard Level 2 scope. Confirm current rates directly with your C3PAO before budgeting; pricing is still settling as the market matures.

Most contractors do at least one round of prep work before that assessment. A gap assessment is the common starting point — a remote review of your documentation, policies, and evidence to identify where you fall short. For smaller organizations, that’s often enough. ENC sees these in the $4,000–$5,000 range.

A mock assessment goes further — it simulates the real audit, including onsite interviews, and surfaces gaps that documentation alone won’t catch. ENC sees these with larger or more complex organizations, in the $10,000–$15,000 range.

Skipping prep to save money is one of the more reliable ways to spend more later. Issues that surface during the actual assessment cost significantly more to fix than issues caught beforehand.

The hidden cost: getting it wrong

The most expensive CMMC mistakes don’t happen during the audit — they happen during planning. Choosing the wrong Microsoft 365 environment, scoping CUI too broadly, or skipping prep work can mean rebuilding systems after a failed assessment, emergency migrations at two to three times the planned cost, lost contracts during the gap, or a prime contractor requiring GCC High after you’ve already built on commercial or GCC.

Getting the scoping decision right at the start is where experienced guidance pays off most.

One decision worth making before you build anything: whether to use a CUI enclave. Instead of applying CMMC controls across your entire organization, an enclave isolates CUI to a specific group of users and systems. Done right, it can significantly reduce your compliance scope and cost. Done wrong, it adds complexity without reducing your audit exposure. Whether it’s the right call depends on how your team works and how widely CUI flows through your operations. Our article on CUI enclaves in CMMC compliance walks through the tradeoffs with a 17-question decision tool.

CMMC implementation costs get most of the attention. Renewal spikes don’t.

On a real project we’re currently managing, the implementation phase runs about $70,000 spread across eight months — with monthly costs ranging from $3,000 to $17,000 depending on what’s happening that month.

Year two looks quieter, until a single month jumps to $11,000 when GCC High licensing renews. That’s more than three times the project’s lowest monthly cost, and it has nothing to do with new compliance work. Map out your renewal dates before you start — not after.

The $100,000 number doesn’t hit all at once

A CMMC project has natural phases — gap assessment, documentation, technical implementation, licensing migration, audit prep — and each one has its own cost and timeline. Even a $70,000 project might have months at $3,500 and months at $17,500. The full number is real, but it’s not a day-one check.

If you need more budget predictability, a few structures are worth knowing about. We’ve built engagements as a fixed monthly fee spread over 12 months — you pay a premium for the certainty, but it turns a project cost into a line item you can plan around. A business line of credit is another option many contractors don’t think to explore before assuming everything has to come out of operating cash. Equipment leasing exists too, but effective rates tend to run like a credit card — it’s our last recommendation.

Cost is what stalls most CMMC projects before they start. The full number is real — but it doesn’t hit all at once, and there are ways to structure the work around how your business operates.

If you want a straight answer on where your organization stands and what it’s likely to cost, schedule a free 30-minute consultation. We’ll tell you what we see.

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