Best PEO (2026): 10 Professional Employer Organizations Compared

A professional employer organization, or PEO, co-employs your staff for payroll, tax and benefits purposes while you keep running the day-to-day work. For a business with a handful of employees, that can open up benefits and HR expertise you'd struggle to arrange alone. It also means handing a big part of your compliance to someone else, so the choice deserves more care than most software decisions.

Below are ten US PEOs in no particular order, listed alphabetically, from long-established national names to smaller providers with local branches or a franchise focus. None shows a free plan, because PEOs quote each business individually. Each description comes from the provider's own website, re-checked today.

Ten PEOs and how they describe themselves

Every free plan cell says No because PEOs work on individual quotes rather than self-serve plans or trials. The Good for column reflects how each provider describes its own focus.

Tool	Type	Good for	Free plan
BBSI	PEO with local support	Firms wanting a local branch contact	No
DecisionHR	PEO for growing firms	Growing firms outsourcing HR admin	No
Engage PEO	Nationwide PEO for SMBs	Small firms needing HR and compliance help	No
G&A Partners	PEO and HR outsourcing	Businesses of any size wanting HR experts	No
Infiniti HR	PEO for franchises	Franchise owners and operators	No
Insperity	Full-service PEO	Employers wanting a dedicated HR advisor	No
Justworks	PEO and payroll platform	Small US teams wanting simple HR software	No
Paychex PEO	Payroll provider's PEO service	Employers wanting a payroll firm's PEO	No
Rippling	PEO plus HR software	Tech-minded firms wanting automation	No
TriNet	Established PEO	Firms wanting benefits and compliance	No

The PEO providers, from A to Z

BBSI

Best for: Employers who want payroll, HR and workers' compensation handled by a PEO with local branch support, starting with a sales conversation.

DecisionHR

Best for: Growing businesses that want HR administration, benefits and risk services taken off existing staff so they can focus on the work itself.

Engage PEO

Best for: Small and mid-sized firms looking for HR consulting, payroll, benefits and compliance support from one nationwide PEO.

G&A Partners

Best for: Businesses from a handful of staff to larger teams who want HR management, payroll and benefits support from named HR experts.

Infiniti HR

Best for: Franchise owners who want a PEO built around franchise operators, covering HR outsourcing, payroll and risk management with one provider.

Insperity

Best for: Anyone after a long-established PEO with HR advisors and technology, starting with a conversation with an advisor.

Justworks

Best for: US teams that want PEO, payroll, compliance and HR tools in one platform, with the option of a payroll-only plan instead.

Paychex PEO

Best for: Employers who'd like to outsource payroll and HR to a PEO run by a payroll provider, with compliance support and expert help.

Rippling

Best for: Tech-minded companies wanting a PEO that automates HR, benefits and compliance in the same system as their payroll and IT.

TriNet

Best for: Built for businesses that want payroll, benefits, risk management and compliance from an established PEO, starting with a talk with an expert.

Why IRS certification changes who owes employment taxes

The IRS runs a certification programme for PEOs, and the difference matters. Its page for CPEO customers says Form 8973 must be filed to tell the IRS when a contract between a certified professional employer organization and its customer starts and ends. It also says that, generally, the CPEO is solely liable for the customer's employment taxes on the wages it pays to work site employees, although in some cases both can be liable.

So the first question for any provider isn't about software or benefits. It's this: are you an IRS-certified CPEO, and will you file Form 8973 for our contract? The IRS publishes a list of certified providers you can check yourself. A provider without certification can still be a good fit, but the liability picture is different, so talk it through with your accountant before you sign.

Seven checks before you hand over your payroll

1. Confirm whether the provider is an IRS-certified CPEO, and check the IRS list yourself.
2. Ask which states they operate in and whether every location you employ in is covered.
3. Ask for a sample of the benefits plans your staff would be offered.
4. Find out who your named contact is and how quickly they reply.
5. Read the contract terms for leaving, including notice periods and what happens to benefits mid-year.
6. Ask how workers' compensation claims are handled and who manages them.
7. Have your accountant review the agreement before you sign.

Is a PEO right for your business?

• Good fit: you've got a small team, want better benefits than you could arrange alone, and don't have an HR person.
• Think twice: you want full control over benefits choices, or you already run HR in-house well.
• Franchise owners: a provider that knows franchise structures saves explaining your setup from scratch.
• Software-first teams: some PEOs come attached to an HR platform, which helps if you also want payroll and IT in one place.

What a PEO handles and what stays with you

A PEO usually takes on payroll processing, tax filings, benefits administration, workers' compensation and HR guidance. You still hire, manage and decide how the work gets done. That split is worth writing down with each provider, so there's no surprise later about who handles a dismissal or a workplace injury.

If you're still deciding how to structure the business itself, my guide to choosing between an S corp and an LLC covers that first step. If benefits are your main reason for looking, here's why benefits help you keep good staff. And it's worth knowing how a workers' comp claim works before you compare providers.

Do you make PEO software or HR outsourcing tools? Tool makers can ask to be considered for a featured place on this list.

My plain advice before you sign with a PEO

Start with certification and coverage. If a provider can't show you it's a certified CPEO, or doesn't operate in every state you employ in, move on before you spend time on benefits presentations. Then compare the people, not the brochure: who'll answer the phone, how fast, and how well they know businesses your size.

Don't sign on the strength of a sales call. Ask for the full contract, the exit terms and a sample of the benefits plans, and give your accountant time to read the lot. A PEO is a long relationship, and leaving one mid-year is far harder than taking your time at the start.

Frequently asked questions

What is a PEO?

A professional employer organization co-employs your staff, handling payroll, tax filings, benefits and HR admin while you keep running the day-to-day work.

What is a CPEO?

A CPEO is a PEO certified by the IRS. The IRS says a CPEO is generally solely liable for the customer's employment taxes on the wages it pays to work site employees.

Do PEOs offer a free trial?

No. PEOs quote each business individually based on headcount, location and benefits, so expect a sales conversation rather than a self-serve plan.

How small can a business be to use a PEO?

Some providers work with businesses of only a few employees. Ask each one whether they take on teams your size.

Can I leave a PEO?

Yes, but check the notice period and how benefits and tax filings are handed back, especially if you leave mid-year.

Is a PEO the same as payroll software?

No. Payroll software runs payroll for you to manage, while a PEO takes on employer responsibilities for payroll, benefits and compliance under a co-employment agreement.