PEO vs EOR comes down to one structural question: who is the legal employer. A professional employer organization co-employs staff your own company already employs through its own entity, layering payroll, benefits and HR administration on top; it is overwhelmingly a United States product. An employer of record is the sole legal employer in a country where you have no entity at all, which is what makes cross-border hiring possible without incorporating. Everything else, pricing, insurance, tax mechanics and where each tool fits, follows from that split.
The structural difference
With a PEO you remain an employer: your entity exists, your staff work for it, and the PEO becomes a co-employer handling payroll administration, benefits sponsorship and compliance support across its client base. Per the industry association NAPEO, this model serves more than two hundred thousand US businesses through roughly five hundred PEOs. With an EOR there is no entity of yours in the picture: the EOR's local company signs the employment contract, runs payroll under its own registrations and carries the legal employer obligations, while you direct the work. A PEO shares an employment relationship you already have; an EOR substitutes for one you cannot yet have.
The tax mechanics behind each
The US side of the PEO model is developed enough that the IRS operates a voluntary certification program for it, created under the Tax Increase Prevention Act of 2014: a certified PEO must show financial responsibility and a tax compliance history, and it assumes responsibility for federal employment tax compliance for its clients, which is the strongest practical distinction between certified and uncertified providers. The EOR model has no equivalent US certification because the employment sits abroad: the EOR's entity withholds and files under the local country's law, and your relationship with it is a service contract plus an invoice covering salary, employer costs and fee. Both models move payroll execution off your desk; only the EOR moves the employment itself.
Where each one fits
The decision is mostly made by two facts: where the worker is, and whether you have an entity there. US employees, your US entity: a PEO fits if you want pooled benefits and outsourced HR administration, and industry data shows the model concentrated among small and mid-sized employers. Foreign worker, no entity: an EOR is the tool, since a PEO cannot co-employ where you cannot employ. Foreign worker where you do have an entity: you want global payroll rather than either. The models also scale differently: PEO relationships often persist for years as a standing HR department, while EOR arrangements are frequently transitional, ending when headcount justifies incorporating locally.
Costs and the questions that separate vendors
PEO pricing typically runs per employee per month or as a percentage of payroll, with the benefits package doing much of the value work. EOR pricing is usually a flat monthly fee per employee on top of salary and statutory employer costs, and the vendors in our index publish those figures on their own pages, quoted verbatim in our tables. For a PEO, the sharpest checks are CPEO certification, whose name sits on the insurance policies, and exit terms for benefits. For an EOR, they are whether your country is served by an owned entity or a partner, and what the invoice itemises beyond the advertised tier. Several large vendors now sell both products, which makes the label matter less than the structure behind the specific quote. None of this is legal or tax advice; the service agreement and local law control.
Questions people ask about peo vs eor
Can a PEO hire someone for me in another country?
Not in the EOR sense. A PEO co-employs staff your entity employs, so without a local entity there is nothing to co-employ. Cross-border hiring without an entity is exactly the EOR product, and some vendors sell both under one roof.
Do I need my own entity to use a PEO?
Yes. Co-employment presupposes your existing employment relationship through your own company. If you have no entity in the worker's country, the available tool is an employer of record.
Is a certified PEO meaningfully different from an uncertified one?
Yes on the tax dimension: an IRS-certified PEO has passed financial responsibility and compliance checks and assumes responsibility for federal employment tax compliance for clients. It is an audited status, not a marketing claim.
Which is cheaper, a PEO or an EOR?
They are priced for different situations, so direct comparison misleads: PEO fees buy administration and pooled benefits on your own payroll, while EOR fees buy legal employment abroad you otherwise could not have. Compare each against its real alternative: direct hiring, or incorporating locally.