In payroll terms a PEO is the arrangement where somebody else's employer identification number appears on your employees' federal filings. That is the concrete meaning behind the acronym, and it is more consequential than the brochures make it sound, because the number on a return is the shorthand for who the government thinks is responsible.
Whose number, and why it matters
Under a professional employer organisation arrangement the provider reports and deposits federal employment taxes for your worksite employees under its own identification number rather than yours. For a certified organisation the Internal Revenue Service treats the CPEO as solely liable for those taxes on wages it pays under a qualifying contract. For an uncertified one the customer can remain exposed if the provider fails to remit, which is the risk certification was created to address and the reason it is worth checking the public listing rather than the provider's own claim.
What your payroll looks like day to day
You still approve hours and salaries and decide what people are paid. The provider runs the calculation, pays the staff, files the returns and, in most arrangements, invoices you for wages plus its fee as a single amount. Your own payroll tax account may go dormant, which sounds tidy and is worth understanding in advance, because it affects what happens when you leave and how your state unemployment experience is treated.
What it costs and why it is never printed
No professional employer organisation in the record on this site publishes a price, and the reason is genuine rather than evasive: the fee depends on your wage base, headcount, benefits take-up and workers' compensation risk, none of which the provider knows before asking. What some do publish, and what this site records, is their certification status and their scale.
Questions people ask about peo meaning payroll
What does PEO mean in payroll?
That the provider reports and deposits your employees' federal employment taxes under its own employer identification number rather than yours, as an administrative co-employer, while you continue to direct the work.
Does a PEO replace my payroll provider?
Yes. A PEO includes payroll processing and filing, so you would not run a separate payroll bureau alongside one; it is a replacement rather than an addition.
Who is liable for payroll taxes under a PEO?
For a certified professional employer organisation the IRS treats the CPEO as solely liable for federal employment taxes on wages it pays under a qualifying contract. Under an uncertified arrangement the customer can remain exposed, which is why the certification status is worth verifying on the IRS listing.