What Is a PEO?

Written by Peolet Editorial · Awaiting credentialed review · Last verified 2026-07-27

The arrangement in one paragraph

You sign a client service agreement with a PEO. From that point the PEO pays your employees, files and remits employment taxes, and offers benefits through its own plans — typically reaching plan pricing and carrier options a small employer could not obtain alone. You continue to direct the work: you decide who gets hired, what they do, how they are paid and whether they stay. The responsibilities are split by contract, and both parties are employers for different purposes. That split is what "co-employment" means, and it is covered properly in its own page.

What a PEO typically takes on

• Payroll processing and payroll tax deposits and filings
• Health, dental, vision, life and disability benefits through its plans
• Workers' compensation coverage, usually under a master policy
• Statutory compliance work: new-hire reporting, wage-and-hour administration,

state registrations tied to employment

• HR support, handbooks, onboarding, and often an HR technology platform

What stays yours

• Who you hire, what you pay them, and who you let go
• Day-to-day direction and supervision of the work
• Your business decisions, your customers, your intellectual property
• Ultimate responsibility for the workplace itself — a PEO does not absorb your

obligations as the party actually directing the work

That last point is where buyers most often misread the arrangement. A PEO reallocates and shares employment obligations; it does not make them disappear.

Who this genuinely suits

Employers between roughly five and a few hundred employees who want benefits their headcount cannot buy directly. Below about five worksite employees most PEOs will not quote at all; the economics do not work for either side.

Multi-state employers. The administrative load of registering, filing and staying compliant in a new state is a fixed cost per state, and it lands on a business that usually has no dedicated payroll function. This is where the value is most defensible.

Businesses with hard workers' compensation classes. Access to coverage through a master policy is occasionally the difference between having coverage and not.

Who it is wrong for

Very small employers. Under five employees, a payroll service is usually the right answer.

Employers who want to keep their own benefit plans and broker. If your existing plan and broker relationship matter to you, you want an ASO, not a PEO.

Businesses hiring where they have no legal entity. A PEO presumes you are already an employer in that jurisdiction. If you are not, you need an EOR.

Anyone hoping to offload liability. If a PEO is being sold to you primarily as a liability shield, read the indemnification clauses in the service agreement before you believe it.

The questions that actually decide it

1. What is the administrative fee, stated separately from insurance? A bundled

number cannot be compared to anything.

1. Is the provider IRS-certified? [It changes who is liable for your payroll

taxes](/peo/certified-peo-cpeo/), and whether your wage bases restart when you join mid-year.

1. Is it registered in every state where you employ people?

Requirements vary by state.

1. What does it cost to leave — in fees, in notice period, and in the work of

rebuilding your own payroll, benefits and unemployment accounts?

1. Whose unemployment experience rating applies, and what happens to it when you

exit?

Question five is the one buyers skip and regret. Your unemployment experience rating is an asset you have spent years building, and how a PEO arrangement treats it varies by state.

Next

• What a PEO costs and how the fee is structured
• Co-employment, in detail
• Certified PEO status and why it matters
• State-by-state PEO registration rules