When you start comparing PEO providers, the first number you want is what you'll pay per person. PEO cost per employee typically ranges from $40 to $160 per month in admin fees. But that number shifts depending on which pricing model the PEO uses, how many people are on your team, and what services are included.

This article breaks down the two main PEO pricing models, shows what drives your per-employee cost up or down, and explains the difference between the admin fee and your total cost per employee. If you want a quick estimate, you can calculate your PEO costs for your team size.

What Does "PEO Cost Per Employee" Actually Mean?

When someone quotes a "PEO cost per employee," they almost always mean the administrative fee. That is the service charge a PEO (Professional Employer Organization) charges for managing your HR, payroll, and compliance. It does not include health insurance, workers' comp, or payroll taxes. Those are billed separately on top.

Think of it like renting office space. The lease is one price. Utilities, internet, and insurance are extra. The PEO admin fee is the lease. Benefits and taxes are the utilities.

The industry's best benchmark comes from NAPEO (National Association of Professional Employer Organizations). Their 2019 analysis found the average PEO administrative cost was $1,395 per employee per year, or about $116 per month (NAPEO/McBassi, 2019). That figure has likely risen with inflation, but it gives you a solid baseline.

How Flat‑Fee Pricing Works

With flat-fee pricing, you pay a fixed dollar amount per employee each month. If the PEO charges $120 per employee per month and you have 20 employees, your admin fee is $2,400 per month. Every month. Regardless of what you pay your employees.

The typical flat-fee range is $40 to $160 per employee per month. Most full-service PEOs charge between $100 and $150.

Flat-fee pricing is predictable. Your cost does not change when an employee gets a raise, earns a bonus, or works overtime. You know exactly what your PEO will charge before the month starts.

Flat-fee pricing benefits companies with higher-paid employees. A software company paying developers $120,000 a year pays the same per-employee PEO fee as a retail shop paying employees $30,000. Under percentage pricing, the software company would pay four times more.

Example: A marketing agency with 15 employees and an average salary of $75,000.

  • Flat fee at $130/employee/month: $1,950/month ($23,400/year)
  • Percentage at 4%: $3,750/month ($45,000/year)
  • The flat-fee model saves this agency $21,600 per year.

How Percentage‑of‑Payroll Pricing Works

With percentage-of-payroll pricing, the PEO charges a percentage of your total gross payroll each pay period. The typical range is 2% to 6%, with most PEOs quoting 3% to 5%.

This means your PEO cost per employee goes up when salaries rise, when employees work overtime, or when you pay bonuses. It goes down if hours are reduced or you have seasonal slowdowns.

Percentage pricing benefits companies with lower-paid employees. A landscaping company with 30 employees earning $35,000 a year would pay $1,400 per employee per year at 4%. Under flat-fee pricing at $130 per month, the same company would pay $1,560 per employee per year. The difference is small here, but it grows with larger teams.

Percentage pricing is less predictable. Your costs fluctuate with payroll. A busy month with overtime means a bigger PEO bill.

Some PEOs fold workers' comp and unemployment taxes into their percentage quote. That makes the number look higher than the actual admin fee. Always ask for a line-by-line breakdown so you know what you are paying for.

PEO Cost Per Employee by Company Size

How Company Size Affects PEO Cost Per Employee
Company SizeTypical Admin Fee (PEPM)What to Expect
Under 10 employees$150 to $250+Fewer options. Some PEOs charge minimum monthly fees regardless of headcount.
10 to 49 employees$100 to $200The core PEO market. Most providers serve this range.
50 to 99 employees$80 to $175Volume discounts start appearing. More negotiating room.
100+ employees$40 to $150Strongest pricing leverage. Some providers shift to percentage-of-payroll at this size.

Ranges are estimates based on industry data (2024-2026). Actual quotes vary by provider, services, and industry.

The pattern is straightforward: more employees means a lower cost per person. PEOs have fixed overhead for each client relationship (account manager, compliance setup, tech platform). With more employees, that overhead spreads across more people.

Pricing often drops at specific thresholds. Many PEOs have breakpoints at 25, 50, and 100 employees where per-employee rates decrease.

According to NAPEO, about two-thirds of all PEO clients have between 10 and 49 employees (NAPEO, 2024). That is the range where the PEO model delivers the most value relative to cost. You can browse PEO providers in our directory to compare options for your team size.

What Drives Your PEO Cost Per Employee Up or Down

Five factors determine where you land in the range.

Your industry. Workers' compensation rates vary enormously by business type. An accounting firm might pay $0.25 per $100 of payroll for workers' comp. A construction company could pay $10 or more per $100. Those rates affect your total per-employee cost even though they are separate from the admin fee.

Your state. Employment regulations, workers' comp rates, and unemployment insurance costs differ by state. A team in California typically costs 15% to 25% more than the same team in Tennessee (eorHQ, 2026). Multi-state employers face additional compliance complexity that can raise fees.

Your claims history. Your experience modification rate (EMR) measures your past workers' comp claims compared to your industry average. A higher EMR means higher premiums. Many PEOs absorb your employees into their master workers' comp policy, which can lower your effective rate if your EMR is above average.

The services you choose. Basic payroll plus compliance sits at the low end of the range. A full-service PEO with HR consulting, benefits administration, risk management, and employee training costs more. Some PEOs offer tiered plans so you pay only for what you need.

Your contract terms. Multi-year commitments sometimes unlock lower per-employee rates. Month-to-month contracts typically cost more but give you flexibility. Early termination fees of 25% to 50% of remaining contract value are common, so read the terms before you sign.

Admin Fee vs. Total Per‑Employee Cost

The admin fee is just one part of what you pay per employee. Your total per-employee PEO cost includes three layers.

Flowchart showing total PEO per-employee cost broken into three layers: admin fee covering payroll, HR, and benefits admin; benefits costs covering health insurance, workers comp, and retirement plans; and statutory costs covering FICA and unemployment taxes.
Your total PEO cost per employee has three layers. The admin fee is the only PEO-specific charge. Benefits and statutory costs exist whether or not you use a PEO.

Here is what a typical all-in per-employee cost might look like for a 25-person company with an average salary of $55,000:

  • PEO admin fee: $120/month ($1,440/year)
  • Health insurance (employer share, single): ~$657/month ($7,885/year per KFF, 2025)
  • Workers' comp: ~$30/month (varies by industry)
  • FICA employer share: ~$350/month (at $55K salary)
  • Unemployment taxes: ~$40/month (varies by state)

Total: roughly $1,197/month or $14,365/year per employee.

The admin fee ($1,440/year) represents about 10% of that total. Benefits and taxes are the other 90%. You would pay those benefits and taxes with or without a PEO. The PEO's value is getting you better rates through group purchasing power, handling the administration, and keeping you compliant. You can explore the full range of services a PEO handles to see what the admin fee covers.

How to Calculate Your Per‑Employee PEO Cost

Three steps.

Step 1: Get your admin fee quote. Ask the PEO whether they charge a flat per-employee fee or a percentage of payroll. If it is a percentage, multiply it by your average employee salary to get a per-employee figure. At 4% on a $55,000 salary, that is $2,200/year or $183/month per employee.

Step 2: Add your benefits costs. Ask for the health insurance premiums, workers' comp rates, and any other benefit costs. These are pass-through charges, not PEO profit.

Step 3: Compare to your current costs. Add up what you spend now on HR staff, payroll processing, benefits broker fees, and compliance consulting. Then compare. Most businesses under 75 employees find the PEO saves money overall (NAPEO/McBassi, 2019). You can see the full return-on-investment picture with our ROI calculator.

You can run the numbers quickly with our PEO savings calculator to estimate how much you could save. And you can see how many HR hours a PEO could free up for your team.

The Bottom Line

PEO cost per employee typically ranges from $40 to $160 per month in admin fees. Flat-fee pricing gives you a fixed monthly cost that does not change with payroll. Percentage-of-payroll pricing fluctuates but can cost less for companies with lower-paid employees.

The admin fee is only about 10% of your total per-employee cost with a PEO. Health insurance, workers' comp, and taxes make up the rest, and you would pay those whether or not you use a PEO.

Your actual rate depends on your company size, industry, state, and the services you need. Larger companies get lower per-employee rates. For a broader look at all the pricing factors, read our complete guide on how much a PEO costs.

If you want to see what PEO providers would charge for your specific situation, request a free consultation through our brokerage team. They will compare providers based on your employee count, industry, and location. The process takes several business days and is completely free to you. PEO providers compensate our brokerage team directly.

Sources