Sit through a sales call for a PEO and a sales call for a modern payroll platform back to back and they can sound remarkably alike. Both promise automatic tax filing, a clean onboarding flow and a dashboard where an employee can see their pay stub. The similarity ends there, because underneath the interface these are fundamentally different legal arrangements, and confusing the two is how businesses end up either overpaying for something they did not need or discovering too late that they needed the thing they did not buy.
What a PEO actually is
A professional employer organization enters a co employment relationship with you. Legally, the PEO becomes the employer of record for tax and benefits purposes, while you retain control over the actual day to day work. This is not a metaphor or a marketing phrase. It is a genuine legal structure, and it is what lets a twelve person company access group health insurance rates normally reserved for employers with hundreds of staff, because your employees are pooled with every other client on the PEO's master policy.
Justworks is a clean example of how this works in practice. PEO Basic runs 79 dollars per employee per month and PEO Plus, which adds full health insurance administration along with HSA and FSA account management, runs 109. In exchange for that fee, Justworks handles payroll tax filing, workers compensation and a meaningful share of compliance risk that would otherwise sit entirely with you.
What payroll software actually is
Payroll software, by contrast, does not change who your employer of record is. You remain the legal employer in every sense. The software runs the calculations, files the tax forms and pays your team, but the co employment relationship a PEO provides simply does not exist. Gusto is the clearest example of this model done well: automatic federal and state filings across all 50 states, included rather than upsold, with no change to who legally employs your team.
This distinction is the entire decision. A PEO gives you access to benefits and compliance cover you could not get on your own, in exchange for giving up some control and paying a meaningful per employee fee indefinitely. Payroll software gives you the calculation and filing engine at a lower price, but you remain fully responsible for sourcing your own benefits, carrying your own workers compensation policy, and handling compliance questions yourself or through your own broker and counsel.
Where the PEO pricing actually lands
Justworks publishes its rates, which in the PEO market is genuinely unusual and worth crediting on its own. A payroll only plan, without the co employment relationship, runs 50 dollars a month base plus 8 dollars per employee, roughly comparable to standalone payroll software pricing. The full PEO tiers at 79 and 109 dollars per employee per month are a different order of cost, and at even a modest headcount that adds up fast compared with the roughly 6 to 10 dollars per employee that standalone payroll platforms typically charge on top of a base fee.
The math only makes sense when you weigh it against what you are replacing. A twelve person company shopping health insurance on its own, outside any pooled risk arrangement, typically gets quoted badly, if it can find competitive group coverage at all. Inside a PEO's pooled risk, that same company can offer benefits packages that would otherwise require far more scale to access. For hiring against larger competitors, that access can matter more than the per employee fee suggests on a spreadsheet.
The trade offs nobody puts on the pricing page
- Control over benefits design. Inside a PEO, you are generally inside their plan structure. A custom benefit design, a broker relationship you want to keep, or an unusual carrier are typically not accommodated, and businesses that valued that flexibility describe the PEO model as constraining once they are a few years in.
- Switching cost. Leaving a PEO is not cancelling a subscription. You are unwinding an employer of record relationship, which means re establishing your own employer tax accounts, your own workers compensation policy and your own benefits carriers, often simultaneously. This is a real project, typically measured in months, not a form submission.
- The cost curve turns with scale. At fifteen employees, PEO pooled rates are often a genuine bargain against what you could buy directly. At a hundred and fifty employees, many companies find they can now buy insurance directly on comparable terms, and the per employee PEO fee has quietly become the more expensive option. Most companies that graduate out of a PEO relationship do so for exactly this reason, not because of a specific complaint about the product.
- Compliance ownership. A PEO absorbs a meaningful slice of compliance risk around payroll tax and workers compensation as part of the co employment structure. Standalone payroll software files correctly on your behalf, but the underlying legal responsibility for getting employment law right, classification, leave policies, state specific requirements, stays with you as the sole employer of record.
The Canadian wrinkle
The PEO model, in the pure co employment sense described here, is largely a US phenomenon and does not map cleanly onto Canada. Canadian employers looking for a similar convenience typically look at a full service payroll and HR platform rather than a true PEO structure. Rippling runs Canadian payroll, including T4, ROE, CPP and EI handling, as its own module rather than through a co employment arrangement. If you are comparing PEO options for a US team and separately need Canadian payroll for a smaller cross border presence, expect to be evaluating two different kinds of product rather than one vendor doing both the same way.
How to actually decide
Ask yourself two questions in order. First, do you need help sourcing competitive benefits, and would your company's size make that genuinely hard to do on your own? If yes, a PEO is solving a real problem for you and the per employee fee is buying something concrete. If your benefits are already sorted, or you are small enough that a simple plan or no group plan is the current reality, a PEO's core value proposition is not doing much work for you and you are likely paying for co employment overhead you do not need.
Second, how much do you value keeping full, direct control over your benefits design and your employer relationship? If the answer is a lot, particularly if you already have a broker relationship you trust or benefits needs a pooled plan cannot accommodate, standalone payroll software with your own separately sourced benefits will serve you better even at a somewhat higher administrative burden.
What we would actually do
A company under about twenty five employees with no existing broker relationship and a real need for competitive benefits is the clearest case for a PEO, and Justworks' transparent pricing makes it easy to model the actual cost before you sign anything. A company with an established benefits relationship, or one already past fifty employees where direct market rates start to compete with pooled ones, should generally look at standalone payroll software and price out benefits separately. Neither choice is wrong. The mistake is treating the decision as a feature comparison when it is actually a decision about a legal relationship you are entering, and in the PEO's case, will eventually have to exit.
The question that actually matters is not which product has more features. It is whether you want a third party to become your legal co employer, and what you get in exchange for that.