PEO Pricing Per Employee: PEPM vs Percentage of Payroll
PEO administrative fees are charged either as a flat amount per employee per month, or as a percentage of gross payroll. PEPM is predictable and favours employers with rising wages. A percentage favours employers with low or flat wages and penalises every raise, bonus and commission payment.
The two structures
PEPM. A flat dollar amount per employee per month. Twenty-five employees at the same rate cost the same whether they earn $45,000 or $145,000.
Percentage of gross payroll. A percentage of what you actually pay. The same twenty-five employees cost the provider the same to administer, but you pay substantially more for the higher-paid ones.
Converting one into the other
To compare, put both on the same basis:
Percentage quote, in PEPM terms
= (percentage ÷ 100 × average annual wage) ÷ 12
PEPM quote, as a percentage of payroll
= (PEPM × 12) ÷ average annual wage × 100Then run it twice: once on this year's payroll, once on next year's expected payroll including raises and bonuses. The gap between the two runs is the structural difference, and it is usually larger than the difference between the two providers.
The calculator does this arithmetic for you.
Which favours whom
| Your situation | Usually better | Why |
|---|---|---|
| Wages rising quickly | PEPM | A percentage takes a cut of every raise for no extra work |
| Significant bonus or commission pay | PEPM | Percentage quotes usually apply to gross, including variable pay |
| Low average wage, high headcount | Percentage | A flat PEPM is a larger share of a small wage |
| Highly seasonal headcount | Percentage | The fee falls with payroll rather than staying flat per head |
| Budget predictability matters | PEPM | Forecastable from headcount alone |
What to check regardless of structure
- Is the fee applied to gross payroll or to taxable wages? Gross is the more
expensive base and is the usual one. Confirm which.
- Does variable compensation count? Bonuses, commissions and payouts can
move a percentage-based fee materially in a single month.
- Are part-time and seasonal staff charged at the full PEPM rate? Frequently
yes, which changes the arithmetic for a restaurant or a retailer.
- Is there a minimum monthly charge? A headcount floor turns a per-employee
fee into a fixed cost the moment you drop below it.
- How does the fee change at renewal? Ask whether increases are capped, and
get the answer in the agreement rather than in an email.
- What is included at that price, and what is billed separately? See
The most common quoting trick
Quoting a low administrative fee alongside benefits priced above market. The headline fee wins the comparison; the total cost does not. This is why the only comparison worth running is total employment cost at a constant plan design — and why a provider that will not give you the administrative fee separately is already telling you something.
Next
Frequently asked
How do I compare a PEPM quote against a percentage quote?
Convert both to an annual dollar figure using your own payroll, then re-run it against next year's expected payroll. The gap between those two runs is the real difference between the structures.
Does the fee usually include benefits?
Quotes frequently bundle them. Ask for the administrative fee separately, in writing, or the comparison is not possible.
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