How do you calculate a defense cyber compliance gap?

Divide implemented controls by required controls and multiply by 100 to get coverage, then subtract your target. With 86 implemented of 110 required, coverage is 78.18%, which is 21.82 percentage points below a 100% target.

What is a good cyber compliance coverage percentage for defense work?

For CMMC Level 2 and full NIST 800-171, the practical target is 100% of applicable controls implemented; partial coverage only buys you a POA&M window, and some primes require zero open high-weight controls before award.

Is the SPRS score the same as this coverage percentage?

No. The DoD SPRS score is a weighted -203 to 110 scale where some controls subtract 5 points each. This calculator gives a simpler unweighted coverage percentage, useful for tracking remediation progress rather than reporting to SPRS directly.

How many controls does NIST 800-171 require?

NIST SP 800-171 Rev 2 defines 110 security requirements, which is why 110 is the default here. Rev 3 restructures these, so confirm which revision your contract DFARS clause invokes.

What does a 21.82-point gap mean for a contract?

It means roughly 24 of 110 required controls are still open. That is a substantial POA&M and, under strict flowdowns, may delay award until the gap is closed or formally accepted by the assessing official.

Coverage percentage vs control gap — which should I report?

Report both. Coverage (78.18%) shows progress at a glance; the gap (21.82 points, about 24 controls) is what auditors and program managers act on when allocating remediation budget and time.

Aerospace & Defense Manufacturing calculator

Defense Cyber Compliance Gap Calculator

The Defense Cyber Compliance Gap measures how much of a required defense cybersecurity control set you have actually implemented, expressed as a percentage, and how far that sits below your target. Defense contractors handling Controlled Unclassified Information (CUI) live and die by frameworks like NIST SP 800-171 and CMMC Level 2, where every unimplemented control is a finding waiting to happen. Cybersecurity managers, FSOs, and program quality leads use this number to size a remediation plan and to answer DCMA and prime auditors honestly. It turns a sprawling control matrix into one defensible coverage figure plus a quantified gap to close before contract award or audit.

What this calculator does

Calculate defense cyber compliance coverage from implemented controls, required controls, and the target compliance level.
a defense program or compliance lead needs to estimate cyber control coverage for manufacturing contract readiness
It computes the percentage of required defense cyber controls you have implemented and the percentage-point gap between that coverage and your target.

Formula used

Defense cyber compliance coverage = implemented controls ÷ required controls × 100
Cyber compliance gap = defense cyber compliance coverage - target coverage

Inputs explained

Implemented NIST 800-171 controls:
Total required defense cyber controls:
Target cyber compliance coverage:

How to use the result

Use it during a CMMC or NIST 800-171 self-assessment, before a DCMA audit, or when scoping a POA&M (Plan of Action and Milestones) for a new defense program.
It treats every control as equal weight; in reality a single missing access-control or incident-response requirement can be a contract blocker even when overall coverage looks high.

Current U.S. benchmarks

Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).
The U.S. has 11,691 transportation equipment establishments employing about 1,682,910 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate a defense cyber compliance gap? Divide implemented controls by required controls and multiply by 100 to get coverage, then subtract your target. With 86 implemented of 110 required, coverage is 78.18%, which is 21.82 percentage points below a 100% target.
What is a good cyber compliance coverage percentage for defense work? For CMMC Level 2 and full NIST 800-171, the practical target is 100% of applicable controls implemented; partial coverage only buys you a POA&M window, and some primes require zero open high-weight controls before award.
Is the SPRS score the same as this coverage percentage? No. The DoD SPRS score is a weighted -203 to 110 scale where some controls subtract 5 points each. This calculator gives a simpler unweighted coverage percentage, useful for tracking remediation progress rather than reporting to SPRS directly.
How many controls does NIST 800-171 require? NIST SP 800-171 Rev 2 defines 110 security requirements, which is why 110 is the default here. Rev 3 restructures these, so confirm which revision your contract DFARS clause invokes.
What does a 21.82-point gap mean for a contract? It means roughly 24 of 110 required controls are still open. That is a substantial POA&M and, under strict flowdowns, may delay award until the gap is closed or formally accepted by the assessing official.

Last reviewed 2026-05-12.