The questions to ask a PEO are the ones whose answers you can verify and whose consequences you will live with: certification status, whose identification number the tax filings run under, what the fee actually covers, who owns the benefits plans, and what leaving looks like. Sales conversations reliably cover features; they reliably skip liability and exit. The IRS's guidance on third-party payers explains why the mechanics matter: depending on the arrangement, you can remain solely liable for employment taxes, share liability, or, with a certified PEO in certain situations, be relieved of it. This page turns that into a working question list.
Certification and standing: questions with checkable answers
Start with the questions you can verify independently. Is the PEO IRS-certified, and under what name does it appear on the CPEO public listings? The IRS updates those listings quarterly and also publishes suspended and revoked certifications, and suspension has teeth: the special liability treatment stops applying to new contracts and customers must be notified within 10 days. Is the PEO ESAC-accredited? ESAC's program adds standards and ongoing financial assurance oversight, and it reports that nearly 73% of industry wages run through accredited PEOs. In which states is the PEO registered to operate? Every answer here should be checked against the register, not accepted from the deck; a vendor that objects to that checking has answered a different question.
Tax mechanics and liability: the questions that bite later
Ask precisely how employment taxes are handled: whose EIN federal filings run under, how state unemployment accounts are managed, and what happens if a deposit is missed. The IRS's baseline is that employers using third parties generally remain ultimately responsible for withheld income tax and both portions of social security and Medicare taxes; the relief it names applies to customers of certified PEOs in certain situations. So ask the vendor to state, in writing, which arrangement type your contract creates and where liability sits in a failure. Ask how you will get evidence that deposits and filings actually happened, on a schedule, not on request. A PEO that professionally runs these mechanics will answer quickly; hesitation on liability questions is itself an answer.
Pricing, benefits and people: what the fee buys
Get the fee structure named: flat amount per employee per month or a share of payroll, what is inside it, and what bills separately, benefits premiums, workers' compensation, state unemployment costs, setup and off-cycle runs. Ask for a sample invoice for a company of your shape. On benefits, ask who sponsors the plans, what happens to rates at renewal, and what your employees lose if you leave, because in a PEO relationship the plans are typically the PEO's, not yours. On service, ask who your named contacts are, what response times are committed, and how a termination in a specific state you operate in would actually be handled step by step. Scenario answers reveal the operation behind the sales team.
Exit terms: read them before you enter
The questions most often skipped are the leaving ones. What notice does termination of the agreement require, and are there fees? How are payroll records, tax filings history and benefits data returned, in what format and how fast? What happens mid-plan-year to employee benefits if you exit, and will the PEO cooperate with a successor provider or your own new plans? Since the employment tax year and benefits plan year rarely align with your decision date, ask how transitions are sequenced to avoid gaps in coverage or duplicate filings. Get the answers in the agreement itself rather than in emails. Nothing on this page is legal or tax advice; the service agreement you sign is the document that will decide each of these questions.
Questions people ask about questions to ask a peo
What is the single most important question to ask a PEO?
Which third-party arrangement your contract creates and where employment tax liability sits in a failure, answered in writing. The IRS's guidance makes clear that liability varies by arrangement type, so this answer frames every other term.
How do I verify a PEO's certification claims?
Check the IRS CPEO public listings, which include certified, suspended and revoked organisations and are updated quarterly, and check ESAC's roster for accreditation. Both are public and take minutes.
What pricing details should be in writing before signing?
The fee basis, per employee per month or share of payroll, everything excluded from it, a sample invoice for your headcount, and every fee that applies at exit. Quotes that resist being written down are not quotes.
Why do exit terms matter if I am just joining?
Because benefits plans, payroll history and filings live inside the PEO's structure while you are a client. The cost and disruption of leaving is set by terms you accept at signing, and mid-year exits touch employee coverage directly.