HR Software vs PEO: Which is Right for Your Business?
HR software gives you control and lower cost. A PEO takes over administration and gives you access to enterprise-grade benefits. Here is a full comparison to help you decide.
HR Software
A platform you operate yourself. You remain the employer, manage your own payroll (or integrate with a payroll tool), and set your own HR policies. Best for businesses that want control and have at least one person who can handle basic HR administration.
PEO (Professional Employer Organisation)
A co-employment arrangement. The PEO becomes a joint employer, handles all payroll tax filings, provides access to group benefits, and manages multi-state compliance. Best for small businesses that lack internal HR capacity and want to outsource the administrative burden.
Side-by-Side Comparison
Detailed comparison across 8 criteria for your decision.
| Criteria | HR Software | PEO | Winner |
|---|---|---|---|
| Monthly cost | $4-$15 per employee/mo | $50-$150 per employee/mo | HR Software |
| Payroll processing | Handled by you (or via payroll add-on) | Fully handled by PEO | PEO |
| Benefits buying power | You negotiate directly | PEO pool pricing (can be cheaper for small teams) | PEO |
| Employer of record | You remain sole employer | Co-employment - PEO shares legal employer status | Depends |
| Compliance support | Tools and alerts - you stay responsible | PEO files taxes, handles multi-state compliance | PEO |
| Control over HR policies | Full control | Shared - PEO has standard policies you must follow | HR Software |
| Ease of exit | Cancel subscription anytime | Complex to exit - employee data migration required | HR Software |
| Best team size | 1 to 200+ employees | 5 to 150 employees (sweet spot) | Depends |
Choose HR Software When...
- 1Your team is growing and you want to keep full HR control
- 2You already have a payroll provider you are happy with
- 3You have an HR manager or HR-savvy operations lead
- 4You want to customise your own HR policies and processes
- 5You want a low monthly cost with the flexibility to switch providers
- 6You operate in one or two states with straightforward compliance
Choose a PEO When...
- 1You have fewer than 30 employees and no dedicated HR person
- 2You want access to Fortune 500-quality benefits for a small team
- 3You are expanding into new states quickly and need automatic compliance
- 4You would rather outsource HR administration entirely
- 5You are comfortable with a co-employment arrangement
- 6Your industry has high regulatory complexity (healthcare, financial services)
Top PEOs for Small Business
If a PEO is the right choice for your business, here are the leading options to evaluate.
Justworks
Transparent flat pricing, excellent benefits
TriNet
Strong industry-specific plans
Insperity
Premium service with dedicated HR advisor
ADP TotalSource
Largest PEO in the US by employees served
Top HR Software Alternatives to a PEO
These self-service HR platforms provide most of what a PEO offers at a fraction of the cost.
BambooHR
4.6/5All-in-one HR for growing teams
Gusto
4.5/5Payroll, benefits, and HR in one place
Rippling
4.8/5HR, IT, and Finance unified
Zenefits
4.1/5Simple HR for small teams
Cost Example: 20-Person Team
The PEO includes payroll tax filing, benefits admin, and co-employment compliance - which HR software does not. Actual value depends on your benefits savings and internal HR time.
Ready to Compare HR Software?
See full pricing and feature comparison for all 8 platforms. Use the cost calculator for your exact team size.
Compare HR Software