← Custodia
The Custodia Library

CMMC Level 1, in plain English.

The federal compliance internet was written by consultants who get paid by the page. This library is written by the engineers actually shipping the work, for the small defense contractors who just want to bid, win, and stay compliant.

15
Safeguarding requirements
1
Annual SPRS affirmation
7 days
To a bid-ready package
The whole path

Three questions. Three answers.

  1. 01

    Do I need it?

    If your contract mentions FAR 52.204-21 or FCI, the answer is probably yes. The decision tree gets you to a definitive answer in two minutes.

    Take the decision tree
  2. 02

    What does it require?

    Fifteen basic safeguarding requirements. No score, no maturity model, pass or fail. Here is what each one actually asks of your business.

    Read the 15 requirements
  3. 03

    How do I file?

    Self-assess, post your SPRS affirmation, hand a one-page summary to any prime asking. We'll show you the exact path, seven days, no consultants.

    See the 7-day path
Stage 01

Do you actually need CMMC?

Before you spend a dollar: a flowchart of who is covered, who is exempt, and what FCI really means in your contracts.

  1. 01
    CMMC Level 19 min read
    Do I Even Need CMMC? A 4-Question Decision Tree for 2026

    Half the small businesses asking about CMMC don't actually need it, and the other half need it more urgently than they realize. Four questions and you'll know where you stand.

    May 11, 2026
  2. 02
    CMMC Level 19 min read
    CUI vs FCI: What's the Difference? (With 12 Real Examples), 2026

    FCI triggers CMMC Level 1. CUI triggers CMMC Level 2. Mix them up and you'll either over-spend by $20k or under-comply on a federal contract.

    May 13, 2026
  3. 03
    CMMC Level 18 min read
    What Is FCI? The 90-Second Definition That Decides Your CMMC Level (2026)

    FCI is the routine non-public information you handle under a federal contract. It's what triggers CMMC Level 1, and it's almost certainly already in your inbox.

    May 11, 2026
  4. 04
    CMMC Level 112 min read
    CMMC Level 1 vs Level 2: Which One Do You Actually Need? (2026 Plain-English Guide)

    Most small defense contractors are Level 1, not Level 2, but the wrong answer here costs you a year and tens of thousands of dollars. Here's the single question that decides it.

    May 11, 2026
  5. 05
    Regulations9 min read
    DFARS 252.204-7012 vs CMMC: Which One Applies to Me? (2026 Guide)

    DFARS 7012 says 'protect CUI to NIST 800-171.' CMMC says 'prove it.' One is the rule. The other is the audit. Here's how they fit together.

    May 13, 2026
  6. 06
    SBIR & Small Business10 min read
    Just Won an SBIR Phase I? Here's Your CMMC Timeline (2026 Edition)

    Congrats on the Phase I award. Now the question that ambushes most founders: do you need CMMC to start work, or only at Phase II? The honest answer depends on what kind of data the agency hands you on day one.

    May 11, 2026
  7. 07
    CMMC Level 19 min read
    DoD Cybersecurity Requirements: A Plain-English Guide for Non-Technical Business Owners

    You're not an IT person. You won a contract. The prime is asking weird questions. Here's exactly what they need, in English, without the acronym soup.

    May 24, 2026
Stage 02

What CMMC Level 1 actually is

The 15 safeguarding requirements, the binary pass/fail model, and how FAR, NIST, and CMMC actually fit together.

  1. 01
    CMMC Level 114 min read
    CMMC Level 1: The Complete 2026 Guide for Small DoD Contractors

    The single page to read first. What CMMC Level 1 is, who it applies to, what's actually required, what it costs, and the fastest honest path through it in 2026.

    May 24, 2026
  2. 02
    CMMC Level 114 min read
    CMMC Level 1: All 15 FAR Safeguarding Requirements Explained in Plain English (2026 Guide)

    Every CMMC Level 1 safeguarding requirement, in language a non-cybersecurity founder can act on, what each control means, what evidence satisfies it, and where teams trip up.

    May 3, 2026
  3. 03
    CMMC Level 18 min read
    CMMC Level 1 Is Binary. There Is No Score. Here's What That Means.

    Level 1 isn't graded on a curve. Every one of the 15 requirements has to be MET, or the whole assessment fails. Here's how the rule actually works, and why that's good news for small contractors.

    May 11, 2026
  4. 04
    CMMC Level 18 min read
    CMMC vs NIST 800-171: The Difference Most Small Contractors Get Wrong (2026)

    CMMC and NIST 800-171 are not the same thing. The difference decides whether your weekend is 5 days of paperwork or a $50K assessment.

    May 24, 2026
Stage 03

Make the 15 requirements real

Evidence examples, Microsoft 365 setup, remote-work scope, and subcontractor proof packets for the Level 1 work people actually have to do.

  1. 01
    CMMC Level 111 min read
    How to Do CMMC Level 1 Yourself (Free, Complete Guide), 2026

    CMMC Level 1 is self-assessed. You don't need a consultant. Here is the entire DIY path, with every template you'll need, written for the small defense contractors actually doing the work.

    May 13, 2026
  2. 02
    Level 1 Evidence10 min read
    CMMC Level 1 Evidence Examples: What to Keep for Each Requirement

    What counts as evidence for CMMC Level 1? Here are practical examples for all 15 requirements, plus what not to rely on.

    June 17, 2026
  3. 03
    Microsoft 36510 min read
    CMMC Level 1 Microsoft 365 Checklist for Small Contractors

    Most Level 1 contractors already live in Microsoft 365. Here is the practical checklist to turn M365 into defensible Level 1 evidence.

    June 17, 2026
  4. 04
    Remote Work8 min read
    CMMC Level 1 for Remote Work: Home Offices, Laptops, and FCI

    Remote work does not break CMMC Level 1. It changes the evidence you keep: managed devices, MFA, home-office rules, and a clear FCI boundary.

    June 17, 2026
  5. 05
    Subcontractors9 min read
    CMMC Level 1 for Subcontractors: What Actually Flows Down

    If you are a DoD sub handling FCI, Level 1 can flow down. Here is what the prime needs, what SPRS shows, and what not to overpromise.

    June 17, 2026
  6. 06
    CMMC Level 16 min read
    CMMC Level 1 Scoping, How to Draw the Boundary (Free Worksheet), 2026

    Treating the whole company as in-scope doubles your work for no compliance benefit. Here's the right way to scope CMMC Level 1.

    May 13, 2026
  7. 07
    CMMC Level 15 min read
    The 8 CMMC Level 1 Policies You Need (Free Templates), 2026

    Eight one-page policies cover every CMMC Level 1 control. Here's the list, with free templates, no 40-page manual required.

    May 13, 2026
  8. 08
    CMMC Level 17 min read
    The Free CMMC Level 1 SSP Template (Fill-in-the-Blank), 2026

    Your SSP is the one document a prime will actually ask for. Here is the free template that gets you a defensible one in 60 minutes.

    May 13, 2026
Stage 04

How to file it and stay bid-ready

Run the self-assessment, post your SPRS score, and respond to a prime asking for proof, without paying a 3PAO.

  1. 01
    CMMC Level 17 min read
    The CMMC Level 1 Self-Assessment Checklist (Free, Printable PDF), 2026

    Every CMMC Level 1 requirement, in plain English, on a printable page. No email gate. No upsell. Just the checklist.

    May 13, 2026
  2. 02
    SPRS & Affirmation9 min read
    What to Tell Your Prime When They Ask for Your SPRS Score (And You're Level 1)

    If your prime is asking for a 0 to 110 SPRS score and you're a Level 1 contractor, the answer is not zero. It's that you're a different tier of the regulation. Here's how to say that without losing the contract.

    May 11, 2026
  3. 03
    CMMC Level 17 min read
    How to Post Your CMMC Affirmation to SPRS (Step by Step), 2026

    Posting your SPRS affirmation is the action that makes you bid-ready. Here's the exact 8-step walkthrough.

    May 13, 2026
  4. 04
    CMMC Level 15 min read
    The CMMC Annual Affirmation: The One Thing That Breaks DIY Compliance, 2026

    Year-one DIY CMMC is easy. Year two is where most contractors quietly lose compliance. Here's how to not be one of them.

    May 13, 2026
Stage 05

The rules behind it

The primary sources, in plain English: the CMMC Program Rule (32 CFR Part 170), the acquisition rule that puts it in contracts (48 CFR), and the real False Claims Act exposure behind your affirmation.

  1. 01
    CMMC Level 19 min read
    32 CFR Part 170 Explained: The CMMC Program Rule in Plain English (2026)

    32 CFR Part 170 is the rule that made CMMC real. Here's exactly what it requires of a Level 1 contractor, without the legalese.

    May 24, 2026
  2. 02
    CMMC Level 18 min read
    The 48 CFR CMMC Acquisition Rule: What Changes in Your DoD Contracts (2026)

    32 CFR 170 created CMMC. 48 CFR is the rule that puts it into your contract. Here's what to look for in the next solicitation that lands in your inbox.

    May 24, 2026
  3. 03
    CMMC Level 18 min read
    The CMMC False Claims Act Risk: What's Real, What's Hype (2026)

    FCA exposure on CMMC is real, but not in the way most vendors describe it. Here's what actually triggers it at Level 1, and what doesn't.

    May 24, 2026
Free · Every Monday

Get the federal bids a small business can win, in your inbox.

The Monday Bid Digest: brand-new SAM.gov solicitations matched to your NAICS, pre-filtered to Level 1 fit, with the CMMC gate called out on every one. Two minutes, no spam.

Get the Monday Bid Digest
Stop reading. Start filing.

Find your SPRS score in 4 minutes. Then file it in 7 days.

Take the free SPRS quiz to see exactly where you stand on the 15 FAR 52.204-21 safeguarding requirements, no signup, no card. If you like what you see, the 7-day Custodia trial picks up where the quiz leaves off and walks you to a signed, bid-ready package.

7-day free trial · No credit card required · $249/mo Self Service ($2,496/yr on annual, two months free)