Do employees co-employed through a PEO count toward a company's employee count?
Yes. For a SourceX fit check, full-time worksite employees who do the company's work under a PEO co-employment arrangement count as the company's staff, even when their W-2s carry the PEO's name. Count full-time worksite employees at the company's peak, leave out contractors, and confirm the number from the PEO's employee census or payroll register.
Short answer: count the worksite employees
Yes. A company that runs payroll and benefits through a professional employer organization still has its own workforce for fit-check purposes: the people who report to its managers, work in its systems and produce its records. Count the full-time worksite employees at the company's peak, leave contractors out, and SourceX confirms the figure during qualification.
The confusion is understandable. Under co-employment, the PEO typically handles payroll, payroll tax filing and benefits administration, and many PEOs report wages under their own employer identification number. W-2s, payroll tax filings and some third-party databases then show the PEO rather than the client, so a company with 140 worksite employees (Illustrative) can look like a five-person shell on paper. Fractional CFOs and brokers who screen on those documents drop good candidates.
Why the records still belong to the company
Co-employment splits employer responsibilities; it does not move the business. The PEO administers HR, while the client company directs the work, owns the customer relationships and runs the systems where operational records live: email, Slack or Teams, the CRM, ticketing, finance, engineering and project tools.
Those operational records are what AI labs and data buyers want. HR and payroll data held in the PEO's platform is a different matter: it is mostly personal information about employees, it sits in the PEO's systems, and it is not the material a data license is built on.
One check is still worth making. Read the client service agreement for any clause on data ownership, confidentiality or the PEO's access to client systems, and note it for the company's counsel.
Who counts and who does not
| Worker | Counts toward 50+ full-time at peak? | Where to verify |
|---|---|---|
| Full-time worksite employees on the PEO's payroll | Yes | PEO employee census or roster export, filtered by status |
| Part-time worksite employees | No, the baseline counts full-time staff | Same census, employment status column |
| Full-time staff on the company's own payroll before or after the PEO | Yes, if they fall in the peak period | Prior payroll provider's registers |
| Independent contractors and freelancers | No, contractors are excluded | Accounts payable and contractor payment records |
| Temps supplied by a staffing agency | Treat separately | See staffing firm temp associates |
| Owners and equity partners | Depends on their role | See whether equity partners count |
| The PEO's own HR and payroll staff | No, they work for the PEO | Not applicable |
Contractors are the most common source of inflated counts. The IRS explains that a business may have to report payments to independent contractors on Form 1099-NEC; people paid that way rather than through payroll stay out of the count. Owner-operator models raise a similar question; see how a trucking company that relies on owner-operators is assessed.
Which PEO report shows the number
Most PEO client portals let an administrator export what you need. Ask the company's controller or HR lead for these, in this order.
- Employee census or roster with employment status, hire date and termination date for everyone who has worked at the company, not only current staff.
- Payroll register by pay period for the busiest years, showing how many people were paid in each cycle.
- Benefits eligibility report, which often tracks full-time status because eligibility usually depends on it.
- Prior provider records if the company joined the PEO recently or switched PEOs, since the peak may sit in an earlier system.
From those, the controller can name the peak pay period and the number of full-time worksite employees on it. That one figure, with its date, is all a partner needs to pass on. Do not send the reports themselves; they hold personal data and stay with the company.
A 15-minute screen for a PEO client
- Peak full-time worksite headcount and the pay period it occurred in, from the PEO census or register.
- Contractors, temps and offshore vendor staff listed separately, not added in.
- Several years of documented operations, including any period before the PEO.
- Records spread across many business systems, with archives intact; strong companies often run 10-15+.
- Records created in the company's own systems, not the PEO's or its clients' systems.
- An owner, CEO, CFO or authorized representative willing to discuss an exclusive AI-training license.
The company fit checker runs a preliminary, non-binding version of this screen with no contact details required.
Screening mistakes with PEO clients
| Mistake | Why it hurts | Fix |
|---|---|---|
| Using the headcount shown by a data provider or LinkedIn | PEO clients often show low or blank employee counts | Ask the controller for the PEO census figure |
| Reading the company's payroll tax filings | Filings may be made by the PEO under its own ID | Use the PEO's client-level reports |
| Counting today's staff only | The baseline is measured at peak | Find the busiest pay period in the company's history |
| Adding contractors to reach the number | Contractors are excluded | List them separately |
| Assuming the PEO owns the data | Operational records sit in the company's systems | Check the client service agreement and move on |
This is general information, not legal, tax or financial advice. Co-employment terms vary by PEO and by state. Confirm with your own counsel, tax adviser or professional body before acting.
Next step
If you advise PEO clients as a fractional CFO, the fractional CFO referral page covers when to raise data licensing in month-end and board conversations, and who qualifies lists the full baseline. When a client clears the screen, register as a partner and make the introduction.
- Step 1Share your linkSend your personal link to a company you know.
- Step 2Company appliesThe company applies itself at /apply.
- Step 3Buyer selects and paysThe buyer selects and pays for the data and SourceX receives its fee.
- Step 4You get your rewardYour share of SourceX fees becomes payable.
Common questions
Does it matter which PEO the company uses?
No. The question is how many full-time people did the company's work at its peak, not which provider ran payroll. PEOs label their reports differently, so ask for whatever export lists each worksite employee with employment status and dates. The company's controller or HR administrator can usually pull it from the PEO's client portal.
What if the company has already left its PEO?
Ask for historical census and payroll reports before portal access ends, because the peak may fall in the PEO years. If access has already lapsed, the former PEO may be able to provide reports on request, and the company's own documents, such as offer letters and org charts, can support the figure while the reports are retrieved.
Should part-time hours be converted into full-time equivalents?
No. The baseline counts full-time employees at peak, with contractors excluded. Full-time-equivalent math used for some benefits and tax purposes answers a different question. Mention part-time staff separately when you describe the company, because their work still creates records, but do not add up hours to reach the count.
Are PEO worksite employees legally the company's employees?
Co-employment divides employer responsibilities between the PEO and the client under their service agreement and applicable law, and the split varies by contract and state. For a fit check the practical question is simpler: who did the company's work in its systems. Legal employer status for tax, benefits or employment-law purposes is a question for counsel.
Can a company on a PEO license its HR and payroll records?
That is rarely the point. HR and payroll data is mostly employee personal information held in the PEO's platform, and licensing it would raise privacy issues. The valuable material is operational: email, chat, CRM, tickets, finance, engineering and project records created in the company's own systems over several years.
Related pages
- Do a staffing firm's W-2 temporary associates count toward the 50+ employee baseline?
- Do equity partners count toward the 50+ full-time employee baseline?
- Can a trucking company that relies on owner-operators still qualify?
- Check Company Fit for Data Licensing
- Referral opportunities for fractional CFOs
- Which US businesses are a fit for a SourceX data licensing introduction
Free resources
- AI readiness assessment — Ten questions, five dimensions, a score out of 100.
- EBITDA calculator — Reported and adjusted EBITDA from net income.
- MOIC calculator — Multiple on invested capital from realized and unrealized value.
- All free tools · MCP resource center
By SourceX Partnerships Team · Published 2026-10-09 · Updated 2026-10-09
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