Executive Summary
A PEO priced as a percentage of payroll and one priced per employee per month can quote you the same headline number and still cost you thousands of dollars apart within a single year. In 2026, competitive PEO administrative fees run roughly 3 to 6 percent of payroll, or about $90 to $165 per employee per month, according to current market pricing data. The model you choose is not a billing formality. It determines whether your cost climbs with every raise you grant or holds steady as your team grows.
The Two Models, Stated Plainly
Percentage of payroll charges you a set percentage of gross wages. If a PEO quotes 4 percent and you run $2,000,000 in annual payroll, the administrative fee is $80,000. That fee moves the moment payroll moves — every raise, bonus, commission, and overtime hour lifts it. The model is transparent in one sense and unpredictable in another: you always know the rate, but you rarely know the year-end total until the year is over. For a broader look at how this structure works, see our earlier breakdown of the percentage-of-payroll pricing option, and our overview of PEO solutions for small and mid-sized businesses for how pricing fits into the broader decision.
Per-employee-per-month, commonly written as PEPM, charges a fixed dollar amount for each worksite employee each month. At $120 per employee per month across 40 employees, the fee is $4,800 monthly, or $57,600 annually, regardless of whether those employees earn $35,000 or $135,000. The fee tracks headcount, not wages.
What this means for you: the correct model is not a matter of preference. It is a function of your average wage. A percentage fee rewards a business with lower-paid workers; a fixed per-head fee rewards a business with higher-paid professionals. The same PEO, quoting honestly, can be the cheaper or the costlier option depending entirely on which model sits on the contract.
The Math That Separates Them
Worked example (illustrative). Consider two 50-employee companies, each evaluating the same PEO. The PEO offers either 4 percent of payroll or $125 per employee per month. On the surface, the two quotes look interchangeable. They are not — the difference is driven entirely by average wage.
| 50-employee company | Company A — Professional services | Company B — Light manufacturing |
|---|---|---|
| Average wage | $85,000 | $38,000 |
| Annual payroll | $4,250,000 | $1,900,000 |
| Percentage model (4%) | $170,000 / yr | $76,000 / yr |
| PEPM model ($125 × 50 × 12) | $75,000 / yr | $75,000 / yr |
| Advantage | PEPM saves ~$95,000/yr | Effectively a tie; % rises fast as wages grow |
The break-even wage. In this example the two models converge near a $37,500 average wage. Below it, percentage of payroll tends to win. Above it, PEPM pulls ahead and the gap widens with every raise. A business that grants a 5 percent annual increase under a percentage model is also granting its PEO a 5 percent raise — automatically, and without renegotiation.
| Not sure which model fits your payroll? Get a no-cost, side-by-side read on percentage-of-payroll versus PEPM for your actual headcount and wages through the PEO Advisor assessment. Start the PEO Pricing Model assessment |
Where Each Model Wins
| Factor | Percentage of payroll wins | Per-employee-per-month wins |
|---|---|---|
| Average wage | Lower (below ~$37,500) | Higher (professional teams) |
| Workforce pattern | Seasonal, high-turnover, hourly | Stable, salaried |
| Fee in a slow season | Flexes down with payroll | Fixed regardless of hours |
| Effect of raises | Fee rises automatically | Fee unchanged by pay |
| Budget predictability | Known rate, unknown total | Known dollar per head |
| Contract term | Often more flexible | Frequently locked ~18 months |
One caution on PEPM: these contracts are more likely to carry term commitments. Brokers regularly see PEPM arrangements locked for 18 months, which protects the rate but limits your ability to re-shop if service slips or a renewal disappoints. Read the term and the exit language before you value the predictability — our CPA-led framework for evaluating a PEO partner covers contract terms and exit language in more depth.
The 2026 Market Context
The PEO industry has moved from niche to mainstream, which matters when you negotiate. According to the National Association of Professional Employer Organizations (NAPEO), roughly 523,000 businesses now use a PEO, an increase of about 8 percent year over year, in an industry generating an estimated $414 billion in revenue. NAPEO research also places the average return on a PEO relationship near 27 percent in cost savings alone, driven by consolidated purchasing across HR staff, health benefits, workers’ compensation, and unemployment insurance.
Pricing has compressed toward the middle. Where administrative fees once spanned a wide 2 to 12 percent of payroll, most competitive full-service PEOs in 2026 land between 3 and 6 percent, or roughly $90 to $165 per employee per month. That compression is good news for buyers, but it also means the pricing model — not just the rate — is where the real money is won or lost.
The Hidden Variable: The Wage Base Effect
A percentage fee interacts with federal wage bases in ways owners rarely model. In 2026 the Social Security wage base rose to $184,500, up from $176,100 in 2025 — an increase of about 4.8 percent, per the Social Security Administration. Percentage-of-payroll pricing is typically applied to gross wages, so a high-earner workforce concentrates fee exposure in exactly the compensation bands that also carry the heaviest employer tax. When you later switch PEOs mid-year, wage-base and tax-cap handling can create genuine double-taxation risk — a reconciliation issue worth its own analysis before you sign.
Case in Point
Case in point (illustrative). A 45-person engineering firm signed a percentage-of-payroll PEO when its average wage was modest and the rate looked competitive. Over three years it added senior engineers and granted steady raises; average wage climbed past $90,000, and the 4 percent fee climbed with it — quietly adding tens of thousands of dollars a year that no one had re-quoted. At renewal, the firm modeled PEPM against its now higher-wage payroll, found it saved roughly $80,000 a year, and converted. Nothing about the PEO’s service had changed; only the model was wrong for the workforce the company had become. This scenario is illustrative and does not describe an identifiable client.
How a CPA Models the Decision: A Step-by-Step
- Pull your actual payroll. Use trailing-twelve-month gross payroll, not a rounded estimate.
- Project 24 months forward. Include planned raises, seasonal swings, and hiring plans.
- Calculate both fees. Run the percentage fee and the PEPM fee against current and projected figures.
- Find your break-even wage. Note which side of it your growth plan puts you on.
- Weigh the winner against the term. A small saving is not worth an 18-month lock on poor service.
The organizations that achieve the strongest PEO economics do not compare headline rates. They compare models against a forecast. The rate tells you this year’s price. The model tells you what happens to that price every year after.
Ready to see which pricing model actually fits your payroll? Request a complimentary side-by-side analysis from Mark J. Burger, CPA.
NAPEO industry data (roughly 523,000 businesses using a PEO, up about 8 percent year over year; a $414 billion industry; approximately 27 percent average cost savings) and the 2026 Social Security wage base ($184,500, up from $176,100) are real and attributed. The two-company comparison and the engineering-firm case in point are illustrative and do not describe an identifiable client. This content is educational, not legal or tax advice.
Frequently Asked Questions
Which PEO pricing model is cheaper, percentage of payroll or PEPM?
Neither is universally cheaper. Percentage of payroll usually wins for lower-wage workforces, while per-employee-per-month wins for higher-wage, professional teams. The deciding factor is your average wage relative to the break-even point, which in typical 2026 quotes sits near $37,500. Model both against your actual payroll before choosing.
Will my PEO fee increase when I give employees raises?
Under a percentage-of-payroll model, yes. Because the fee is a percentage of gross wages, every raise, bonus, and overtime hour increases the administrative fee automatically. Under a per-employee-per-month model, the fee is fixed by headcount and does not change when you raise pay, which is why growing, higher-wage companies often prefer it.
What does a PEO cost in 2026?
In 2026, competitive full-service PEO administrative fees generally range from 3 to 6 percent of payroll, or roughly $90 to $165 per employee per month. Actual pricing depends on headcount, average wage, industry, workers’ compensation risk, employee locations, and the services included. Always request the fee in both formats to compare fairly.
Does the PEO administrative fee include my payroll taxes?
No. The administrative fee is the PEO’s charge for its services and is separate from your payroll and employer taxes, which pass through to you. Reading an invoice clearly means separating pass-through costs from the administrative fee — a distinction worth understanding before you sign.
Can I negotiate or switch between pricing models later?
Often, yes, though it is easier at renewal than mid-term. Some PEOs will convert a percentage arrangement to PEPM or the reverse if your workforce profile changes. Term commitments matter here: per-employee-per-month contracts are frequently locked for 18 months, so confirm the term and exit language before signing.
Is percentage or PEPM better for a fast-growing company?
For a company adding higher-wage roles, per-employee-per-month usually protects margin better because the fee does not rise with compensation. A percentage model effectively gives the PEO a raise whenever you raise your team. Growth-stage companies should model both against a 24-month hiring and compensation plan, not just current payroll.
About the author. Mark J. Burger, CPA, advises small and mid-sized businesses on strategic workforce and co-employment decisions through GuidePoint PEO LLC. His analysis draws on a CPA practice dating to 1987 and hundreds of PEO cost assessments.
