HR outsourcing is usually priced per employee per month, and what you pay depends on scope, headcount and who operates your HCM platform. If you’re the CFO being asked to approve it, you’ve probably noticed the awkward part already: the proposal quantifies one side of the decision and leaves the other side, what your current arrangement costs, entirely unquantified.
This breakdown covers how HR outsourcing is priced, what actually moves the number, what published figures are available and how much to trust them, and why a PEO quote cannot be compared to a managed service fee without adjustment.
Key takeaways
- Most HR outsourcing is priced per employee per month, so cost scales with headcount rather than sitting as a fixed retainer.
- Three of the four ranking cost pages we could read quote the identical $45 to $1,500 per month range, and the two that cite a source both trace it to a 2017 Inc.com HR-outsourcing article.
- Optima Office publishes the most granular public breakdown we found, putting typical small and midsize pricing at $20 to $180 per employee per month in October 2025.
- A PEO rate bundles benefits and workers’ compensation, which is why it can’t be compared line for line with a managed service fee.
The Short Version
Compare HR outsourcing quotes by normalizing every one of them to a per employee per month figure at the same scope, then price your in-house baseline before you decide.
| Model | How it is priced | What is bundled | What stays yours |
|---|---|---|---|
| In-house team | Salaries plus benefits load, software and overhead | Nothing, you run it yourself | Everything |
| Managed service (HRO) | Per employee per month | Payroll, benefits administration and HCM operation | Sole-employer status and your own benefit plans |
| PEO | Per employee per month, with benefits folded into the rate | Benefits and workers' compensation under the PEO's master plan | Day-to-day direction, but not sole-employer status or your own plans |
| Project or consulting | Hourly | A defined, one-time scope | Everything ongoing |
On this page
- How is HR outsourcing priced?
- What drives the number up or down
- What the published figures actually say
- What does an in-house HR function really cost?
- Is it cheaper to outsource HR?
- Why PEO quotes are not comparable
- The costs nobody quotes you
- How should a CFO evaluate the quote?
- What Corban’s model looks like
- Frequently asked questions
How is HR outsourcing priced?
Most HR outsourcing is priced per employee per month, usually shortened to PEPM, and billed on your headcount each cycle. Some providers quote a base platform fee plus a per employee rate. A smaller number, mostly consultancies rather than ongoing services, bill hourly.
PEPM pricing suits a CFO because it behaves like a variable cost. It rises and falls with headcount instead of committing you to a fixed overhead you carry through a hiring freeze. That’s a different financial shape from an internal HR team, whose cost is largely fixed regardless of how many people you employ this quarter.
What drives the number up or down
Four variables move an HR outsourcing quote more than anything else, and every proposal you receive is some combination of them. Understanding which one is inflating a quote is usually the fastest way to make two proposals comparable.
- Scope. Payroll only sits at the bottom of the range. Payroll plus benefits administration plus employee support plus HCM operation sits at the top.
- Headcount. Per employee rates typically fall as headcount rises, so a rate quoted for a smaller employer won’t be the rate for a midsize one.
- Payroll frequency. Weekly payroll costs more to run than semi-monthly, because the work repeats more often.
- Technology. Whether the provider merely integrates with your HCM platform or actually operates it day to day is often the single largest differentiator between two quotes that look similar.
What the published figures actually say
Public pricing data for HR outsourcing is thinner and less reliable than it appears, which is worth knowing before you anchor a budget to a number you found online. We read the pages that currently rank for HR outsourcing cost and compiled every figure they publish.
How we researched this
In August 2026 we pulled the page-one results for “how much does hr outsourcing cost” and attempted to read each one. Four were readable: Optima Office, Complete Payroll Solutions, TriNet and My HR Partner. We recorded every price figure each page publishes and whether it attributes that figure to a source. Pages that block automated access are excluded. This is a small sample, and it is a survey of what publishers claim rather than a survey of what providers actually charge.
The first finding is the repetition. Optima Office states that outsourcing HR “can range from $45 to $1,500 per month for most businesses.” Complete Payroll Solutions states costs “will be between $45 and $1,500 a month.” TriNet states they “are estimated at $45 to $1,500 a month.” Three different publishers, one identical range. Complete Payroll Solutions and TriNet both link it to a 2017 Inc.com HR-outsourcing article, while Optima Office shows no source, so the number traces to a single dated figure rather than three independent measurements.
That range is also close to meaningless for planning. A spread from $45 to $1,500 covers everything from a payroll-only arrangement at a small employer to a full service at a mid-market one, so it cannot tell a CFO what their own organization should expect.
The more useful public numbers are the granular ones. Optima Office, in a page dated October 2025, puts the typical range for small and midsize businesses at $20 to $180 per employee per month, with basic services covering payroll and benefits administration at $45 to $160 per employee per month, and comprehensive services adding recruitment, training and performance management at $210 to $400 per employee per month. My HR Partner reports that project-based HR consulting, which is a different purchase entirely, runs $100 to $400 per hour.
Treat all of these as orientation, not as a quote. None of them knows your payroll frequency, your benefits complexity or your HCM platform.
| Published figure | Source | What it covers |
|---|---|---|
| $45 to $1,500 per month | Optima Office, Complete Payroll Solutions, TriNet | Whole-market range; CPS and TriNet cite a 2017 Inc.com article, Optima shows no source |
| $20 to $180 per employee per month | Optima Office, October 2025 | Typical small and midsize range |
| $45 to $160 per employee per month | Optima Office, October 2025 | Basic: payroll and benefits administration |
| $210 to $400 per employee per month | Optima Office, October 2025 | Comprehensive: adds recruitment, training, performance |
| $100 to $400 per hour | My HR Partner | Project consulting, not ongoing service |
What does an in-house HR function really cost?
The in-house comparison is the half of the decision that proposals almost never build, and it’s the half a CFO needs. An internal HR function costs considerably more than the salaries on its payroll lines once you load it properly.
A complete baseline includes base salaries for every HR role, the employer benefits load on top of those salaries, payroll and HCM software licenses, training and certification, recruitment cost when an HR person leaves, and the cost of errors, which usually shows up as penalties, corrections and reruns rather than as a budget line. Optima Office reports that companies spend 570 hours annually on HR administration.
Build that number for your own organization before you evaluate any proposal. Our comparison of in-house payroll versus outsourcing works through the same exercise for the payroll function specifically, which is usually the easiest place to start because the hours are the most measurable.
Is it cheaper to outsource HR?
For many midsize employers outsourcing costs less than an equivalent internal team, but the honest answer depends on what your team does today. If your HR function is two administrators processing payroll and enrolling benefits, a managed service usually replaces that work at lower total cost. If your HR function is a strategic business partner running organizational design, outsourcing the administration frees that person rather than replacing them, and the saving shows up as capacity rather than as headcount reduction.
The comparison that misleads people is service fee against salary. The fee replaces a loaded cost, not a salary line, and it also absorbs the software, the error exposure and the coverage gap when your HR administrator takes leave.
Why PEO quotes are not comparable
A PEO quote and a managed service quote are two different purchases, and putting them side by side without adjustment produces a misleading answer. A PEO rate bundles benefits and workers’ compensation into the price, because the PEO sponsors those plans under its own employer identification number as part of a co-employment arrangement.
That means a PEO number includes costs you’re currently paying separately, and it also means your benefits move onto the PEO’s master plan. To compare properly you have to strip the bundled benefits and workers’ compensation out of the PEO figure, or add your own benefits spend to the managed service figure. The National Association of Professional Employer Organizations reports that PEO penetration runs at 14 percent among employers with 20 to 499 employees, and its 2025 client analysis shows the model concentrated among much smaller companies, with 85 percent of PEO clients employing fewer than 50 people. If your PEO renewal is what triggered this exercise, our note on why PEO costs grow covers the renewal mechanics that tend to surprise finance teams.
The costs nobody quotes you
Three real costs rarely appear on a proposal, and all three land in the first ninety days. Implementation takes internal time, because someone on your side has to supply data, validate it and answer questions. Parallel payroll runs, where the new provider runs alongside the old one to prove accuracy before cutover, consume effort twice for a cycle or two. And data cleanup is almost always larger than expected, because payroll and benefits records diverge quietly over years.
None of these is a reason to avoid outsourcing. They’re a reason to plan a transition over weeks rather than days, and to be skeptical of any provider who quotes a fast cutover without mentioning them.
How should a CFO evaluate the quote?
Normalize every proposal to a per employee per month figure at identical scope, then compare on what’s actually included. Four checks do most of the work.
- Same scope. List the functions each quote covers and strike anything one includes that another doesn’t before comparing.
- Same technology assumption. Establish whether the provider operates your HCM platform or only integrates with it.
- Same employment structure. Confirm whether the quote assumes co-employment, because that changes what’s bundled.
- Exit terms. Ask what happens to your data and your plans if you leave, and price the answer.
Our note for finance leaders on choosing an HR outsourcer covers the diligence questions in more detail.
What Corban's model looks like
Corban OneSource prices per employee per month and includes operation of the HCM platform as part of the service rather than as an add-on. Your company remains the sole employer, so there’s no co-employment and no move onto a master benefits plan. Corban OneSource publishes a figure of up to 32% in savings on its own site, offered here as the company’s own claim rather than an independent benchmark.
Because scope and headcount drive the number, Corban doesn’t publish a rate, and any provider that publishes one without knowing your payroll frequency or benefits complexity is quoting a starting point rather than a price. Corban OneSource has run this model for nearly three decades and reports 95 percent client retention on its own site. The variable cost model explains how the per employee structure behaves as headcount moves.
FAQ
Published estimates vary widely because they measure different scopes. Optima Office puts typical small and midsize HR outsourcing at $20 to $180 per employee per month as of October 2025, with basic payroll and benefits administration at $45 to $160. Your own figure depends on scope, headcount, payroll frequency and whether the provider operates your HCM platform.
Often, though it depends on what your internal team currently does. Outsourcing usually costs less than an equivalent administrative team once you load salaries with benefits, software and error cost. Where HR is already strategic rather than administrative, outsourcing tends to return capacity rather than reduce headcount.
PEPM stands for per employee per month. The provider charges a set rate for each employee on your payroll each month, so the total scales with headcount. It’s the most common structure in HR outsourcing and it behaves as a variable cost rather than a fixed overhead.
Usually yes. Payroll frequency is one of the main pricing variables, because a weekly cycle repeats the processing, funding and reconciliation work more often than a semi-monthly or monthly one. If you’re comparing quotes, confirm each assumes the same frequency.
Payroll is typically the first function organizations outsource, because it’s high frequency, rules-driven and visible to every employee when it goes wrong. Benefits administration commonly follows, then employee support and HCM administration.
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