By Cesar Figueroa, Owner, ReUp Benefits · Licensed health insurance and PEO broker
In this guide
Where do PEO cost savings come from? PEO cost savings come mainly from lower HR labor costs and group health insurance, with smaller gains from workers' comp, unemployment tax, consolidated vendor fees and lower turnover. One NAPEO study found the average client saved $1,775 per employee against a $1,395 PEO cost.
I spent more than ten years inside three PEOs, including time as an account executive and sales manager at Justworks, and the first question every owner asks is whether a PEO will actually save money. The honest answer is that it depends on where your costs sit today. This guide walks through every area where PEO cost savings show up, what each one is worth, and where the savings shrink. For how PEOs price their services in the first place, start with our PEO pricing guide.
Where do PEO cost savings come from?
PEO cost savings come from six places: HR labor, health insurance, workers' comp, unemployment tax, consolidated fees and lower turnover. The biggest measured pieces are HR labor and health benefits.
NAPEO and McBassi & Company (2019) studied 132 PEO clients and 44 non-clients and measured savings in five categories. Average savings were $1,775 per employee per year against an average PEO cost of $1,395, which works out to a 27.2% return. Half of clients would see a lower return and half a higher one, and the sample is small and from 2019, so treat it as a direction, not a quote.
How much can a PEO save on health insurance?
Health insurance is the second largest measured saving, at $654 per employee per year in the NAPEO study. The mechanism is group size: your employees join the PEO's larger pool, which can mean better rates and more plan choices.
The stakes are high. KFF 2026 Employer Health Benefits Survey puts the average annual premium at $9,804 for single coverage and $28,303 for family coverage, each up 5% from 2025. At those levels, every 5% you shave off a single plan is about $490 per covered employee per year.
In my experience, this is also where PEOs are most uneven. A business with high claims or an older workforce often gains the most from a pooled plan. A healthy team with a strong small group quote may not. PEO health plans are underwritten and renewed on their own schedule, so read our guides on the best PEO for health insurance and on how a PEO renewal works before you assume last year's rate will hold.
How does a PEO lower workers' comp costs?
A PEO lowers workers' comp cost mainly through its master policy and billing method. NAPEO measured an average saving of $66 per employee per year, the smallest measured category, so do not expect a windfall.
In my experience, the cash flow benefit is often bigger than the rate benefit. Many PEOs bill workers' comp with each payroll based on actual wages, so you skip the large upfront deposit and the year end audit bill that come with a standalone policy. Pay as you go billing also exists outside PEOs, so ask your current carrier before counting it as a PEO advantage. High risk classes can see larger swings in either direction. Our guide to PEO workers' comp covers rates, classification codes and how to leave.
Can a PEO save money on state unemployment tax?
Sometimes. In states where the PEO files unemployment tax under its own account, a business with a high standalone rate can land on a lower pooled rate. A business with a clean claims history and a low rate may see little change.
NAPEO confirms there are savings here but left unemployment insurance at $0 in its return calculation because the data could not pinpoint an amount. In my experience, states differ on whether a PEO can report under its own rate, and some require clients to keep their own account, so ask any PEO how it handles your state and what rate it will charge you.
A related saving is penalty risk. The IRS failure to deposit penalty page lists 2% for deposits 1 to 5 days late, 5% for 6 to 15 days, and 10% after that, rising to 15% if tax stays unpaid after an IRS notice. A PEO runs payroll tax deposits for you, but only a certified PEO (CPEO) takes on responsibility for federal employment taxes, so confirm certification before treating penalty relief as a benefit.
Which fees does a PEO consolidate?
A PEO bundles payroll, benefits administration, HR support, compliance tools and often insurance into one per employee fee. The saving shows up when you stop paying separate vendors for each.
Compare the sticker prices honestly. Justworks lists a payroll only plan at $8 per employee per month plus a $50 monthly base fee, PEO Basic at $79 per employee per month, and PEO Plus at $124 per employee per month, as of October 2026. For 20 employees that is about $2,520, $18,960 and $29,760 per year. The payroll plan is cheaper because it does less. Only PEO Plus lists medical, dental and vision administration, so it is the fair comparison for a team that wants benefits handled.
The extra spend replaces other bills. TechInsurance puts the average employment practices liability policy at $257 per month, about $3,084 a year, and some PEOs include or offer similar coverage. Add HR software and a 401(k) administrator, and the gap narrows. Our guides on average PEO fees and PEO vs. payroll company show the line items side by side.
How much admin time does a PEO save?
The largest measured saving is time. NAPEO found PEO clients averaged 1.6 HR staff per 100 employees against 2.6 per 100 for businesses overall, which it valued at $965 per employee per year.
Many small businesses have no HR staff at all. A 2017 ADP study, reported by HCM Technology Report, found up to 70% of small businesses hand HR to someone with another job, and that person spends more than 13 hours a week on it, which ADP valued at $18,800 a year. That survey comes from a payroll vendor and is nine years old, so use it for scale, not precision. A PEO takes over payroll tax filings, new hire paperwork and benefits enrollment.
Does a PEO improve employee retention?
PEO clients have lower turnover, but the data shows association, not proof of cause. NAPEO (2024) reported turnover of 50.4% among PEO clients against 57.6% for comparable non-clients, a gap of 7.2 percentage points.
Turnover is expensive. Gallup says replacing an employee can cost one half to two times annual salary. For a 20 person team, 7.2 points is about 1.4 fewer departures a year. At the low end of Gallup's range and a $50,000 salary, that is roughly $36,000. Treat that as an illustration. NAPEO is an industry trade group, and businesses that choose a PEO may differ from those that do not.
What do PEO cost savings look like for 20 employees?
Scaling the NAPEO averages to 20 employees gives a net benefit of about $7,600 a year before any turnover effect. Your result can land well above or below that.
| Category | Per employee, per year | 20 employees |
|---|---|---|
| Internal HR salaries and benefits | $965 | $19,300 |
| Health benefits | $654 | $13,080 |
| Other external HR spend | $90 | $1,800 |
| Workers' compensation | $66 | $1,320 |
| Unemployment insurance | Not quantified | Not counted |
| Total savings | $1,775 | $35,500 |
| Average PEO cost | $1,395 | $27,900 |
| Net benefit | $380 | $7,600 |
These are 2019 dollars from NAPEO and McBassi & Company (2019). Use the table as a framework and replace each line with your own invoices.
When does a PEO not save money?
A PEO does not save money when your costs are already low. The usual cases are a healthy team with a strong direct health quote, a clean unemployment history, low risk workers' comp classes, and cheap payroll already in place.
Price is also negotiable. Fees, markups and contract terms vary, so see our guide to PEO discounts before you accept the first quote, and plan the exit before you sign. To pressure test a proposal, line up the PEO's all in cost against what you pay today for payroll, benefits administration, workers' comp, unemployment tax and HR time. If the PEO is not ahead after that exercise, keep what you have.
Want your own numbers? Book a 20-minute call with me. Bring your latest payroll invoice, health insurance renewal, workers' comp policy and unemployment tax notice, and I will help you compare them against PEO quotes.
Frequently asked questions
How much can a PEO save a small business?
On average, a NAPEO study found PEO clients saved $1,775 per employee per year against an average PEO cost of $1,395, a 27.2% return. That is an average from 132 clients in 2019 dollars. Half of clients saw less, so run your own numbers before you sign.
Is a PEO cheaper than a payroll company?
Usually not on the invoice. A payroll-only plan can run a few thousand dollars a year for 20 employees, while a PEO with benefits can run $19,000 to $30,000. A PEO can still come out ahead when it replaces HR staff time, benefits administration and insurance you would otherwise buy separately.
Does a PEO always lower health insurance costs?
No. Access to a larger group can bring better rates and more plan choices, but a small business with a healthy workforce and a strong small group quote may not save. Compare the PEO's rate and plan design against your best direct quote, not against last year's renewal.
Do PEOs save money on unemployment insurance?
Sometimes. In states where the PEO reports under its own account, a business with a high standalone rate can benefit from a pooled rate. A business with a clean claims history and a low rate may see little change. The NAPEO study did not put a dollar figure on this category.
Who benefits most from a PEO financially?
Businesses with above average HR costs or above average health benefit costs per employee tend to see the largest returns, according to NAPEO. That usually means teams of about 10 to 100 employees with no dedicated HR staff and a health plan they find expensive.
Sources and disclaimer
This article is general information, not legal, tax or insurance advice. Figures are as of October 2026 unless a source year is shown. Confirm details with the provider, carrier or agency before you decide.
- NAPEO and McBassi & Company, The ROI of Using a PEO (September 2019)
- NAPEO, PEO Clients: Faster Growing, More Resilient Businesses with Lower Turnover Rates (September 2024)
- KFF, 2026 Employer Health Benefits Survey (October 2026)
- IRS, Failure to Deposit Penalty (accessed October 2026)
- Gallup, This Fixable Problem Costs U.S. Businesses $1 Trillion
- HCM Technology Report, 70 percent of small businesses put HR in untrained hands, citing ADP (2017)
- Justworks, PEO and payroll plan pricing (accessed October 2026)
- TechInsurance, Employment Practices Liability Insurance cost (accessed October 2026)