PEO vs. Payroll Service vs. DIY: The Real Total Cost
Quick Answer
- DIY payroll looks free but costs owner hours and carries the highest error and penalty risk; payroll services typically run per-employee monthly fees; PEOs cost the most but bundle payroll, HR, compliance, and benefits access.
- A large share of small businesses incur IRS payroll penalties each year, a cost that belongs in any honest DIY calculation.
- A PEO uses co-employment to pool many small businesses, which can unlock benefits pricing small employers cannot reach alone.
- The right answer changes as headcount grows: DIY strains past a handful of employees, and the PEO math strengthens as benefits become part of recruiting.
Every payroll decision is a bet about what an owner’s time is worth and how expensive a mistake will be. The invoice is the visible part. The real comparison — the one that decides whether a business is quietly bleeding — includes the hours, the penalties, and the recruiting weight of benefits. Here’s the whole board.
What does each path actually cost?
| DIY | Payroll Service | PEO | |
|---|---|---|---|
| Visible cost | Software ~$0–50/mo | Base + per-employee, low hundreds/mo | % of payroll or flat PEPM, highest |
| Owner hours | Hours every pay period | Minutes | Minutes |
| Tax filings | Owner’s problem | Included | Included |
| HR & compliance | Owner’s problem | Owner’s problem | Substantially covered |
| Benefits access | Whatever small groups get | Whatever small groups get | Pooled pricing across the PEO |
| Error/penalty risk | Highest | Low on filings | Lowest overall |
The DIY row deserves its own sentence: payroll penalties hit a large share of small businesses every single year, and the categories are unforgiving — late deposits, misclassified workers, botched tip reporting. “Free” payroll that produces one penalty and eats four owner-hours a month is among the most expensive products a business can buy.
What is a PEO really selling?
The mechanism is co-employment: the PEO becomes the employer of record for tax and benefits purposes while the owner keeps complete control of operations, hiring, and firing. What that unlocks is pooling — a 9-person Las Vegas company inside a PEO buys benefits as part of a group of tens of thousands. Health plans, workers’ comp rates, and retirement options that no 9-person group qualifies for alone suddenly price like big-company benefits.
That’s the honest pitch, and the honest caveat: the bundle costs real money, and a business that doesn’t need the HR layer or the benefits story is paying for shelf space it won’t use. A deeper breakdown of what PEOs handle lives in What Does A PEO Do?
How does the answer change with headcount?
Under about 5 employees with simple payroll, DIY or a cheap service is usually rational. From 5 to 15 — especially with tipped staff, contractors, or the first benefits conversations — the error rate and time cost of DIY climb while the PEO bundle starts paying for itself in recruiting. Past 15, some businesses stay with a PEO for the benefits leverage; others graduate to in-house HR with a payroll service underneath. The pattern: the decision isn’t permanent, and re-running it at every growth stage is the move.
The Las Vegas wrinkle: tipped payroll makes the DIY row worse than the national average. Nevada’s no-tip-credit rules, tip reporting, and the unclaimed FICA credit (covered in the tipped payroll guide) are exactly the terrain where in-house shortcuts turn into audit findings.
ProtectHealth has officially partnered with Paychex, which means one conversation can cover payroll, HR, compliance, and the employee benefits strategy on top of it. No pitch, just a map of which path fits your headcount and your plans.
Book An Employer Strategy ConversationWhat is the decision, really?
Strip the vendor logos away and three questions remain. How many owner-hours per month does payroll currently consume, priced at what the owner’s time earns elsewhere? What did errors, penalties, and near-misses cost in the last two years? And is benefits access part of the next hiring push? A business that answers all three has usually already made its decision. The invoice was never the interesting number.
Frequently Asked Questions
What does a payroll service typically cost?
Most payroll services charge a monthly base fee plus a per-employee fee. For a small team, the total commonly lands in the low hundreds of dollars per month, with tax filing and direct deposit included.
What does a PEO cost compared to a payroll service?
PEOs charge either a percentage of total payroll or a flat per-employee-per-month fee, and the total runs meaningfully higher than a payroll service. The comparison only makes sense when the bundled HR, compliance, and benefits access are priced in.
What is co-employment in a PEO relationship?
The PEO becomes the employer of record for tax and benefits purposes while the business owner keeps full control of operations, hiring, and management. Co-employment is the mechanism that lets a PEO pool many small businesses for benefits pricing.
At what size does DIY payroll stop making sense?
Most businesses feel the strain past roughly 5 employees, and complexity multiplies with tipped staff, contractors, multi-state workers, or benefits. The trigger is usually an error, a penalty, or a hiring push rather than a headcount number.
Does outsourcing payroll remove compliance liability?
Not entirely. A payroll service files accurately based on the data provided, while the underlying classifications and policies remain the owner's responsibility. A PEO takes on a larger share of compliance work, though owners retain core employer obligations.
Related Questions
What's the next step?
Running a business with employees? ProtectHealth has officially partnered with Paychex — one conversation covers benefits, payroll, HR, and the whole employer picture.
Book An Employer Strategy ConversationProtectHealth brokers are insurance professionals, not tax professionals. Nothing on this page implies every self-employed person or business automatically qualifies for any specific structure — eligibility depends on business structure, income, and household situation. When tax or business structure enters the conversation, a brief chat with a licensed tax professional is a make-sense next step.