PEO Services: 7 Providers Compared for Small Business

Almost every guide to PEO services is written by a company that sells one. That is worth keeping in mind, because the most useful thing a comparison can tell a small business owner is not which PEO is best, but whether they need a PEO at all. For a large share of teams under 50 people, the honest answer is no, and no vendor-authored page will say so.

This page does two things. It compares the leading professional employer organizations on cost, pricing model, and fit, the way the ranking guides do. And it lays out a neutral framework for deciding between a PEO, HR software, and an employer of record based on your size and your actual problem, so you can tell whether a PEO is the right tool before you talk to a sales team.

What a PEO service actually is

A professional employer organization is a company you partner with to outsource the administrative burden of employing people. Through a legal arrangement called co-employment, the PEO becomes the employer of record for tax, benefits, and insurance purposes, while your business stays the worksite employer that directs the actual work. Your employees remain your employees in every way that matters day to day.

The reason small businesses use PEOs is benefits. Because a PEO pools the employees of hundreds or thousands of client companies, it can offer health insurance, retirement plans, and other benefits priced like those of a large corporation. A 15-person business partnering with a PEO can offer its team the kind of health plan it could never negotiate on its own. Alongside that, the PEO handles payroll, tax filing, workers' compensation, and compliance guidance.

How co-employment works

Co-employment is the mechanism that makes everything else possible, and it is the part most business owners find confusing. It splits employer responsibilities between two parties. The PEO takes on the obligations that come with being the employer of record: withholding and remitting payroll taxes under its own identification number, administering benefits, and carrying workers' compensation. You retain everything to do with running your business: who to hire, who to let go, what people work on, and how they are managed.

This is not staffing, leasing, or outsourcing your workforce. Your employees do not become the PEO's employees in any practical sense, and you do not lose control of your team. The arrangement exists so the PEO can legally pool your staff into its benefits and insurance programs and take the compliance-heavy administration off your desk.

Workers' compensation through a PEO

PEO workers' comp normally means your employees are covered under a master policy carried by the PEO rather than a policy in your own name. Premium comes out with each payroll run instead of a deposit and an annual audit, and the PEO's risk team handles claims and return-to-work.

For a small employer that is often the most valuable part of the arrangement after benefits. There is no large deposit up front, no year-end audit bill to absorb, and a business with a hazardous class code or a rough loss history can get covered inside the master program rather than the state assigned risk plan.

The rules are set at state level and they are not uniform. Virginia allows a PEO covering its co-employees to secure that insurance in the voluntary market under a master workers' compensation policy in the PEO's name, according to the Virginia Workers' Compensation Commission.

Texas takes a different route. Either the client or the PEO may offer the coverage, and the Texas Department of Licensing and Regulation requires the professional employer services agreement to state which party maintains it. Read your own agreement rather than assuming the PEO carries the policy everywhere you operate.

Two questions are worth asking before you sign. What happens to your claims history when the relationship ends, and whether you can document it for a new carrier, because a clean record you cannot evidence is worth little at renewal. And whether the comp rate you are quoted is fixed or moves with the master program's results.

What PEO services cost

PEO pricing comes in two shapes, and the difference matters for a growing team. A flat per-employee-per-month fee charges a set amount for each employee, which makes budgeting predictable and does not rise when you give raises. A percentage-of-payroll model charges a share of gross wages, usually 2 to 6 percent, which means every raise, bonus, and commission increases your PEO bill.

The administrative fee is only part of the picture. It pays for the PEO's service and access to its benefits pool, but the actual benefits premiums, payroll taxes, and workers' compensation are passed through on top. When comparing providers, the number that matters is total cost of employment, because a provider with a higher admin fee but a stronger benefits pool can work out cheaper overall. Most PEOs quote only after a sales conversation, which makes the few that publish rates easier to evaluate.

7 PEO providers compared

The table below covers the leading PEO providers for US small and mid-sized businesses, with estimated administrative costs and the pricing model each uses. Only Justworks and Deel publish rates; the rest quote after a sales conversation, so those figures are third-party estimates.

Justworks is the most transparent provider in the market, one of the very few PEOs that publishes per-employee rates with no setup fees and no long-term contract. Basic covers payroll across all 50 states, tax filing, compliance tools, workers' compensation, 401(k) administration, and 24/7 support, while Plus adds health insurance administration through major carriers. The platform is widely praised as the easiest to set up and use in the category, which makes it the common starting point for startups and small teams that value predictability over deep customization.

TriNet organizes its offering around industry verticals such as technology, financial services, life sciences, and professional services, tailoring benefits and compliance to the needs of each. It serves teams from small businesses into the mid-market and is a publicly traded company, which lends stability. Pricing is quote-only on a per-employee basis, and the vertical focus is the main reason to choose it: a business in one of its target industries gets benefits and risk management shaped for that sector rather than a generic package.

ADP TotalSource is the largest US PEO by worksite employees, backed by the scale, benefits buying power, and benchmarking data of the biggest name in payroll. That scale is its strength: deep benefits options, extensive compliance infrastructure, and a large integration marketplace behind the service. It suits companies that are scaling toward 100 or more employees and want an established provider that will not be outgrown. Pricing is quote-only and sits at the higher end, with implementation fees typical, though admin fees are often negotiable in competitive bids.

Insperity is built around a white-glove service model, with dedicated teams supporting each client rather than a pooled help desk. It is strongest in the 50 to 150 employee range and is known for tier-one benefits carriers, risk management, safety programs, and training. Pricing is typically a percentage of payroll, which can be expensive for teams with high average salaries, since the fee rises with wages. For a business that values a hands-on, consultative relationship and can absorb the cost, the service depth is the draw.

Paychex PEO builds on the company's long history in payroll, frequently converting existing payroll clients into PEO relationships. It offers all-in-one HR technology, payroll, benefits, and compliance, and its admin fees are often reported to sit somewhat below the largest competitors. For a micro or small business that already uses Paychex for payroll, moving to its PEO is a low-friction step that consolidates the relationship into one vendor.

Rippling offers its PEO as a layer on top of its unified HR, payroll, and IT platform, aimed at tech-forward teams that want deep automation. Its standout feature is the ability to switch the PEO on or off without migrating data, which removes the usual pain of leaving a PEO once you outgrow it. The PEO itself is quote-only and sits on the platform's per-employee base fee. Note that Rippling is not IRS-certified as a PEO, which is worth weighing against the certified providers on this list.

Deel is global-first, best known as an employer of record for international hiring, and it offers a US PEO across all 50 states from around $99 per employee per month. Its natural buyer is a company that already uses Deel to hire and pay people abroad and wants to consolidate its US employees onto the same platform. For a purely domestic small business with no international footprint, a dedicated US PEO is usually the more focused choice, but for a distributed team the single-platform consolidation is the appeal.

CPEO and ESAC status are federal and industry credentials, but they are not the only register worth checking. Most states also license or register PEOs separately, usually through the department of insurance or the labor agency, and commonly require a surety bond so there is something behind your payroll taxes if the provider fails. The threshold and the regulator vary by state: a PEO operating in North Carolina, for example, must hold a Department of Insurance license backed by a $100,000 bond, while other states set different bond amounts or run a lighter registration regime. Ask any shortlisted provider which states it is licensed in, and confirm it with that state's regulator rather than the provider's own website.

Certification also changes who owes the tax. The IRS treats a certified PEO as solely liable for federal employment taxes on the wages it pays your worksite employees, filing under its own identification number and allocating each customer on a Schedule R. That statutory protection does not extend to an uncertified provider, which is why the accreditation question is worth asking early.

What people mean by PEO software

Every PEO ships a client platform, and what gets called PEO software is usually one of the providers above rather than a separate category of product. What differs between them is how much of a system you actually get: a full HR record with self-service and reporting, or a payroll and benefits portal with a thin HR layer bolted on.

Test it during the sales process rather than after. Ask to see how a manager adds a hire, where documents live, what an employee sees when they log in, and what reporting you can pull without calling support. A platform you cannot operate day to day costs you the administrative time you bought the service to save.

When a PEO makes sense

A PEO is a genuinely good fit for a specific profile, and when that profile matches, it can be one of the highest-leverage decisions a small business makes. Research from the industry association points to real outcomes: businesses using a PEO have been found to grow faster, show lower employee turnover, and be meaningfully less likely to go out of business than comparable companies that do not.

The clearest case is a company of roughly 20 to 150 employees with no internal HR team, where benefits access and compliance offloading are pressing problems. If you are competing for talent and cannot offer a competitive health plan, or if payroll tax and compliance obligations across multiple states are consuming time you do not have, a PEO solves exactly that. The co-employment model turns a problem that would otherwise require hiring HR staff into a per-employee fee.

Remote and multi-state teams

A remote PEO is not a different product. It is the same co-employment arrangement applied to the part that hurts most for a distributed team: registering and filing in every state where somebody works, and offering a health plan with a usable network in all of them.

Two cautions. Ask which states a provider is licensed or registered in before assuming national coverage, and ask how the health plan performs where your people actually live rather than where you are. A large national pool with thin local networks is a common disappointment.

International PEO is a marketing label rather than a separate legal arrangement. What is sold under that name is an employer of record, which becomes the full legal employer abroad so you can hire where you have no entity. It is contracted and priced differently from a domestic PEO, so treat it as a separate decision.

When you do not need a PEO

This is the section most PEO guides leave out, because most are written by companies that sell PEOs. The honest reality is that a large share of small businesses that consider a PEO would be better served by something simpler and cheaper.

If your team is under about 20 people, the per-employee fees rarely justify themselves unless benefits access is your single biggest problem. If your main need is organizing HR, running onboarding, storing documents, and giving employees self-service rather than getting group benefits, that is a job for HR software, not a co-employment relationship. And if you already have internal HR capacity, paying a PEO per employee often costs more than keeping HR in-house and equipping it with the right tools.

The decision comes down to your actual problem. A PEO solves benefits access and compliance offloading. If that is not what you need, a per-employee PEO fee is an expensive way to get HR administration you could handle with software at a fraction of the cost.

PEOs for very small teams and single employees

Providers do take small clients. Published minimums in this market start at around two to five employees, and several providers quote with none stated at all, so a two-person company can be placed. Whether it should be is a different question.

At one or two employees, the per-employee fee buys administration you can do yourself in an hour a month, and a solo owner with no W-2 staff has nobody to co-employ in the first place. If the goal is health coverage for one or two people, a marketplace plan or a small-group plan through a broker is normally cheaper.

Before you choose: PEO vs HR software

If reading the section above made you suspect you might not need a PEO, it is worth understanding the alternative clearly before you commit to a co-employment relationship. Many businesses shopping for a PEO are really trying to solve an HR administration problem, not a benefits problem, and for that, HR software is the simpler and less expensive answer.

FirstHR is an HR software platform, not a PEO. It does not co-employ your staff, run payroll, or provide a benefits pool, so if group health insurance and compliance offloading are your real needs, a PEO from the comparison above is the right direction. What FirstHR does instead is handle the HR administration many businesses mistakenly shop for a PEO to solve: onboarding with an AI wizard, e-signature for hiring documents, an employee database, document management, an org chart, and a self-service portal, at a flat $98 to $198 per month that does not rise with headcount. A common and cost-effective setup for a small team is HR software for administration paired with a standalone benefits broker for insurance, which together often cost far less than a per-employee PEO fee.

How to choose a PEO provider

What a PEO transition involves

A PEO transition is an implementation project rather than a signup. Plan for several weeks between the signed agreement and the first payroll that actually runs on the provider's system, and expect the work to land on whoever owns payroll and benefits today.

You supply the raw material: employee records, year-to-date wage and tax figures, benefit elections and dependents, job classifications for workers' compensation, and any active leave or garnishment. Ask specifically how year-to-date wages carry across, because that answer decides whether wage bases restart partway through the year.

Timing is worth choosing deliberately. A January start lines up with the tax year and with most plan years, which avoids the problems a mid-year move creates for deductibles already met and for employees midway through an enrollment cycle.

Leaving is the mirror image and gets far less attention during the sales process. Payroll, benefits, and coverage all sit in the PEO's name, so an exit means new plans, a new carrier, a new payroll system, and employee data exported into it. Ask up front what notice is required, what you can export, and in what format.

Frequently Asked Questions

What is a PEO service?

A PEO, or professional employer organization, co-employs your staff for administrative purposes, handling payroll, tax filing, benefits administration, workers' compensation, and compliance while you keep control of your business. The main draw is access to large-group benefits pricing a small business could not get alone. You pay through an administrative fee, usually per employee per month or as a percentage of payroll.

What are PEO services and how do they work?

PEO services cover the administrative side of employing people: payroll, tax filing, benefits, workers' compensation, and compliance. They work through co-employment, where the PEO becomes the employer of record for tax and insurance purposes while you remain the worksite employer directing the work. Your employees stay yours; the PEO takes over the back-office obligations and provides its benefits pool.

How much do PEO services cost?

Pricing follows one of two models. A flat per-employee fee typically runs from around $59 to $250 per employee per month for the service, on top of benefits and taxes. A percentage-of-payroll model usually runs 2 to 6 percent of gross wages, which costs more for high-salary teams. Only a few providers publish rates; most quote after a sales conversation. Compare total cost of employment, not the admin fee alone.

What is co-employment?

Co-employment is the legal arrangement behind a PEO. Your business and the PEO share employer responsibilities: the PEO becomes the employer of record for payroll taxes, benefits, and workers' compensation, while you keep hiring and firing decisions and day-to-day management. It is not staffing or leasing, and your employees do not become the PEO's workforce.

Do I need a PEO for a small business?

Not always. A PEO makes the most sense for roughly 20 to 150 employees with no internal HR that wants group benefits and compliance help. Below about 20 employees, or if your main need is HR administration rather than benefits, HR software is usually a better fit at a fraction of the cost. The test is whether affordable group benefits and compliance offloading are your real problem.

What is the difference between a PEO and HR software?

A PEO is a co-employment service where people handle your payroll, benefits, and compliance and you gain access to a benefits pool, for a per-employee fee. HR software like FirstHR is a tool you run yourself to manage records, onboarding, documents, and self-service, at a lower and more predictable cost. Many businesses that think they need a PEO actually need HR software plus a standalone benefits broker.

What is the difference between a PEO and an EOR?

A PEO co-employs workers you have hired in a country where you have a legal entity. An employer of record, or EOR, becomes the full legal employer on your behalf so you can hire in countries where you have no entity. A PEO is for domestic co-employment; an EOR is for international hiring. If your question is about employing someone abroad, you need an EOR.

How do I choose a PEO provider?

Confirm the provider is IRS-certified and ESAC-accredited, then compare on pricing transparency, benefits pool quality, service model, and industry fit. Ask for the total cost of employment at your actual size, not just the admin fee, and check for implementation fees and contracts. Decide whether you need a PEO at all before shortlisting, since the wrong tier or model can cost more than it saves.