PEO (Professional Employer Organization)
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Definition
A PEO (professional employer organization) is a company that co-employs a client's workers and takes on payroll, payroll tax filing, benefits, and parts of HR compliance under a service agreement. The client still hires, manages, and directs the work, while the PEO administers pay and benefits, often giving small employers access to larger group benefit plans.
This entry defines the term. For the full guide to when a PEO fits, read What is a PEO?. To compare providers, see PEO software.
How a PEO works
The arrangement rests on co-employment: the client and the PEO split employer duties under a contract, usually called a client service agreement.
- 1Onboarding to the PEO. Employees are enrolled in the PEO's systems, and often its benefit plans, from an agreed start date.
- 2Payroll and taxes. The PEO runs payroll and files payroll taxes, usually under its own tax identification number for the wages it pays.
- 3Benefits. The PEO sponsors health, retirement and other plans that cover employees of many client companies.
- 4Compliance support. Workers' compensation, handbooks and HR advice are typically part of the service.
- 5Day-to-day control stays with the client. The client decides who to hire, what they do and what they are paid.
In the U.S., a PEO can apply to the IRS to become a Certified Professional Employer Organization (CPEO), a status defined in Internal Revenue Code section 7705 (IRS). For wages a CPEO pays to covered work site employees, the CPEO is solely liable for federal employment taxes (IRS). A non-certified PEO doesn't carry that protection for the client.
A PEO differs from an ASO (administrative services organization), which provides similar administration without co-employment, so the client stays the sole employer; see PEO vs ASO. It also differs from an EOR, which is the only legal employer, usually in a country where the client has no entity.
Example
Illustration with made-up prices: a 25-person company pays $125,000 a month in gross wages ($1.5 million a year). It is quoted two fee structures.
| Structure | Monthly fee | Annual fee | After a 10% payroll increase |
|---|---|---|---|
| $150 per employee per month | 25 x $150 = $3,750 | $45,000 | $45,000 (unchanged) |
| 3.5% of gross payroll | $125,000 x 3.5% = $4,375 | $52,500 | $57,750 |
The percentage model costs $7,500 more in year one and the gap widens with every raise. A PEPM fee tracks headcount instead. In both cases the admin fee is only part of the bill: benefit premiums, workers' compensation and payroll taxes are charged on top. The PEO pricing guide covers those line items.
Related terms
- EOR: sole legal employer, used mainly for hiring abroad.
- PEPM: the per-employee pricing unit many PEOs quote.
- Payroll tax filing: one of the main duties a PEO takes on.
- PEO vs EOR: guide to choosing between the two models.
- What is co-employment?: the legal model behind PEOs.
Common mistakes
- Assuming the PEO takes all liability. Co-employment splits duties. The client is still responsible for how it manages people, such as discrimination and wage-and-hour compliance.
- Comparing only the admin fee. Benefit premiums and workers' compensation often drive more of the total cost.
- Not checking CPEO status. The federal employment tax protection applies only to certified PEOs and covered employees.
- Ignoring the exit. Leaving a PEO mid-year can mean re-enrolling everyone in new benefits and restarting some tax wage bases. Read the termination terms.
- Using a PEO for foreign hires. A U.S. PEO generally can't employ people abroad. That is what an EOR is for.
Sources
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