TriNet vs JustworksOne prints its prices. One makes you ask.
Justworks publishes $79 and $124 per employee per month. TriNet publishes one worked example at $150 and routes everything else through a sales call. That difference in posture tells you a lot about which company wants which customer. It tells you almost nothing about which one will cost you less, because at both vendors the fee you negotiate is the small part of the bill.
What each vendor will tell you before you talk to a rep
Justworks
Payroll and HR tools. No PEO, no group health.
Co-employment, compliance, 401(k). No medical access.
Adds medical, dental, vision, COBRA, HSA/FSA.
Full-time international employees.
TriNet
The only rate TriNet prints: 20 employees, $3,000 a month.
Q2 2026 professional service revenue divided by worksite employees.
Non-PEO platform and services. You keep your own EIN and benefits.
Medical and workers' comp premium sits outside the PEPM at both vendors.
Justworks rates from its published pricing page, last updated August 17, 2026. TriNet figures from its PEO pricing page and its Q2 2026 results, reported July 30, 2026.
The comparison most buyers get wrong
Nearly every TriNet versus Justworks article on the internet compares $79 to $150 and calls it a day. That comparison is wrong, and it is wrong in a way that costs money. Justworks PEO Basic at $79 does not give your employees access to Justworks medical, dental, or vision plans. No COBRA administration either. It is co-employment plus payroll plus compliance, and health insurance is somebody else's problem.
The plan that competes with TriNet PEO is PEO Plus at $124. Once you fix that, the fee gap at 50 employees narrows from $70,800 a year to $15,600. Still real. Not the landslide the listicles describe. And $15,600 is smaller than a single bad medical renewal on a 50-person census, which is the number nobody puts in a comparison table because neither vendor will quote it publicly.
Some context on why the premium side dominates. TheBureau of Labor Statisticsput private-industry benefit costs at $14.01 per hour worked in March 2026, 30.1% of the $46.60 total compensation cost. Benefits are roughly a third of what an employee costs you. The PEO administrative fee is a rounding error against that, whichever vendor charges it.
Both companies are legitimate. TriNet is one of the largest professional employer organizations in the country and anIRS-certified PEO. Justworks has been in market since 2013 and built its brand on price transparency in a category that historically had none. The question is fit, not quality. If you want the full single-vendor breakdowns, I have written upTriNet pricingandJustworks pricingseparately.
Cost math
Annual administrative fees at four price points
Four columns because there are four defensible numbers in this comparison. Two published Justworks rates, TriNet's own $150 example, and the $178 you get by dividing TriNet's Q2 2026 professional service revenue by its average worksite employee count. Read the teal column against the TriNet columns.
| Headcount | JW Basic $79 | JW Plus $124 | TriNet $150 | TriNet $178 |
|---|---|---|---|---|
| 10 employees | $9,480 | $14,880 | $18,000 | $21,360 |
| 25 employees | $23,700 | $37,200 | $45,000 | $53,400 |
| 50 employees | $47,400 | $74,400 | $90,000 | $106,800 |
| 100 employees | $94,800 | $148,800 | $180,000 | $213,600 |
| 250 employees | $237,000 | $372,000 | $450,000 | $534,000 |
Annual administrative fees only. The teal column is the honest comparison to TriNet, because PEO Basic does not include medical access. Health premiums, employer payroll taxes, and workers' comp sit on top of every figure here and are several times larger.
At 25 employees the apples-to-apples gap is $7,800 a year. At 100 it is $31,200. At 250 it is $78,000. The gap scales linearly because both vendors charge flat per-employee rates rather than a percentage of payroll, which is the one structural thing they genuinely agree on. If a third PEO quotes you a percentage of wages, convert it to a per-employee monthly rate at your actual average salary before you compare anything, or the comparison is meaningless.
One asymmetry to keep in mind: the TriNet columns are estimates and the Justworks columns are list prices. TriNet negotiates. A 60-person company with clean workers' comp experience in two states can probably get quoted closer to $130 than $178. Justworks does not discount its published rates in the same way, which cuts both directions. You know what you are paying, and you have no room to push.
Scope
What the fee buys at each vendor
The overlap is larger than either sales team admits. Both give you co-employment, pooled workers' compensation, payroll tax filing, employment practices liability coverage, 401(k) access, and a benefits administration layer. The differences sit at the edges, and one of them is the whole reason PEO Basic exists as a separate price point.
| What you get | JW Basic | JW Plus | TriNet PEO |
|---|---|---|---|
| Co-employment and pooled workers' comp | |||
| Access to medical, dental, vision | |||
| COBRA administration | |||
| HSA and FSA accounts | Add-on | ||
| 401(k) | |||
| Employment practices liability insurance | |||
| 24/7 support | |||
| Dedicated HR consultant | Add-on | Add-on | |
| Published price you can budget against | |||
| Applicant tracking |
Justworks columns come from its published plan comparison. TriNet columns come from what the company lists as covered by its per-employee-per-month fee. Neither includes recruiting.
Two rows deserve attention. Dedicated HR consulting is bundled at TriNet and costs $30 per employee per month as a Justworks add-on. Layer that onto PEO Plus and you are at $154 PEPM, which is above TriNet's example rate. If you actually need a named HR advisor rather than a help center, the arithmetic flips. Most 30-person companies do not need one, but the ones running their first layoff or their first multi-state expansion very much do.
The other row is the last one. Neither product recruits. Justworks lists applicant tracking system integrations on its PEO plans, which means it will sync with whatever hiring system you already run. TriNet stops its own list of covered services at onboarding tools. Everything before an accepted offer is a separate purchase, with its own economics driven bycost per hirerather than by headcount. That distinction is the same one I walk through inATS versus HRIS.
The part that decides it
Pool size, and why TriNet can win on total cost while losing on fee
A PEO's core product is risk aggregation. Your 40 employees join a pool of hundreds of thousands, and the pool gets rated as one large group instead of forty individuals. TriNet averaged roughly 298,000 worksite employees in the second quarter of 2026. Justworks does not disclose comparable figures, being private, but it is materially smaller.
Bigger pool does not automatically mean cheaper medical. It means more plan options, deeper carrier networks in more states, and more stability when one expensive claim hits. For a distributed company with people in nine states, that matters. For fifteen people in Austin, a good local broker can sometimes beat both.
The one number that settles this comparison is your total monthly invoice with your real census priced against real plan designs. Ask both vendors for it. If a rep will only quote the administrative fee and wants to leave benefits until later, that is a signal about where the surprise lives.
There is recent history here worth knowing. TriNet tracks an insurance cost ratio, the share of insurance revenue consumed by claims. It ran above target after pandemic-era utilization normalized, and TriNet repriced its book to fix it. Customers on the underpriced cohorts saw large benefit renewal increases, and they left. Average worksite employees fell 11% year over year in Q2 2026 and professional service revenue fell 8% to $159 million. Full-year 2026 guidance puts the insurance cost ratio at 88.5% to 89.5%, back inside the target band.
My read: the repricing is behind them, which lowers the odds of a shock renewal for a customer signing in 2026. It also means TriNet is a vendor that just lost a meaningful chunk of its book to price and knows it. That is a better negotiating position than most buyers realize they are in. Justworks has no equivalent pressure because its rates are public and it does not have to defend them quarter by quarter.
The decision
Which one fits your company
The honest answer is that company shape decides this more than price does. Headcount, state footprint, workforce age, and whether you have an HR function already.
Justworks usually wins when
TriNet usually wins when
Below 15 people, add a third option to the evaluation: unbundle. A payroll platform such asGustoplus an insurance broker plus a standalone workers' comp policy frequently beats both PEOs on total cost at that size, because you are not paying for buying power you are too small to use. PEO salespeople rarely volunteer this.
If your team is largely outside the United States, neither PEO is the right frame. Justworks sells a global employer of record at $599 per employee per month and international contractor payments at $39. That is one option among several, andDeelcompetes hard on the same ground. The structural difference between the two models is covered inPEO versus EOR.
And if you are shortlisting more broadly, get a third quote. Running only two vendors against each other is how buyers end up anchored on the wrong range. Insperity is the other large national PEO worth a call, and I have the numbers inInsperity pricing.
Contract terms
Five things to settle before you sign either one
Get the renewal mechanism in writing
Ask how benefit renewals are calculated and whether you get to see your own claims experience. Without that disclosure you cannot tell a genuine claims increase from a pool rebalance, and you cannot shop the risk credibly. Ask during the sales cycle. In month eleven you get a polite no.
Price the add-ons into the headline number
Justworks time tracking is $8 per employee per month, dedicated HR consulting is $30, US contractors are $8 each. TriNet prices background checks, drug screening, and premium training separately. Build the real per-employee number with the add-ons you will actually use, then compare.
Confirm implementation cost
Justworks states there is no implementation fee. TriNet notes that many PEOs charge a one-time onboarding fee. Get a yes or no in writing, with the amount, before the contract goes to signature.
Read the exit clause first
PEO migrations move payroll history, state tax registrations, benefits enrollment, and workers' comp all at once. Ask for termination for convenience with 60 days notice, and check whether the early-termination fee is expressed as remaining months of administrative fees.
Check the minimum headcount
TriNet requires a minimum worksite employee count and does not publish a universal figure. Justworks charges no base fee on its PEO plans. If you are near the floor at either vendor, ask what happens to your rate if headcount drops below it mid-contract.
Time the switch to a January 1 benefits date if you can. Moving mid-year restarts deductibles for everyone who has already spent against one, and that is the kind of thing employees remember longer than they remember the new dental network. The discipline is the same one that makes anATS migrationsurvivable: sequence the cutover, and know what breaks.
The gap in both bundles
Both vendors employ people. Neither finds them.
Whichever way this decision goes, one line item stays open. TriNet's covered services end at onboarding tools. Justworks offers integrations to an applicant tracking system rather than an applicant tracking system. A company that signs a PEO and assumes hiring is handled discovers otherwise the first time it needs to post a role and track fifty applicants.
The two budgets also scale on different axes, which is easy to miss. PEO fees track the people you already employ. Recruiting costs track the roles you are trying to fill. A 40-person company hiring twelve people this year and a 40-person company hiring two pay their PEO the same amount and have nothing in common operationally. Price the layers separately or you will overbuy one and starve the other. For the hiring side, start withwhat an ATS actually costsandwhat to run at 10 to 60 people.
A useful test before you sign: ask the rep to walk through what happens in their system between a candidate applying and a hire being onboarded. Both will describe the onboarding half well. Listen to how quickly they get there.
Pick a PEO for payroll. Pick something else for hiring.
Prepzo prices on hiring activity instead of headcount, with unlimited users on every plan, AI resume screening, and AI interviews built in. It runs alongside TriNet, Justworks, or whatever payroll stack you land on.
Try Prepzo freeFrequently Asked Questions
Is Justworks cheaper than TriNet?
On administrative fees, yes. Justworks publishes $79 per employee per month for PEO Basic and $124 for PEO Plus. TriNet quote-gates its rate, prints one $150 example, and its Q2 2026 filings imply a blended $178. At 50 employees the fee gap between Justworks PEO Plus and TriNet at $150 is $15,600 a year, and $32,400 against the implied rate. The catch is that the fee is a small share of the invoice. Medical premium decides the total bill, and TriNet operates larger risk pools, so a better renewal can erase the fee gap in one cycle.
What is the real difference between Justworks PEO Basic and PEO Plus?
Health insurance. PEO Basic at $79 gives you co-employment, payroll, compliance, employment practices liability coverage, 401(k), workers' comp access, and 24/7 support, but no access to Justworks medical, dental, or vision plans and no COBRA administration. PEO Plus at $124 adds all of that plus HSA and FSA accounts, mental health and fertility benefits, and One Medical where available. If you are comparing Justworks to TriNet PEO, compare Plus. Basic is a different product.
How much does TriNet cost per employee per month?
TriNet does not publish a rate card. Its pricing page uses a single worked example: 20 employees at $150 per employee per month produces a $3,000 monthly administrative fee. Backing the rate out of the Q2 2026 results, $159 million in professional service revenue across roughly 298,000 average worksite employees over three months, gives about $178 per employee per month blended across PEO and HR Plus customers. My read is that a real PEO quote for a 30 to 80 person company lands between $140 and $190.
Do TriNet and Justworks both charge separately for benefits?
Yes. At both vendors the per-employee-per-month fee covers administration, not the insurance itself. Medical, dental, vision, and workers' compensation premiums are billed on top and repriced at renewal. TriNet states this directly on its pricing page. This is why comparing PEPM rates alone tells you very little. Ask each vendor to price your actual census against actual plan designs, then compare total monthly invoices.
Which one is better for a company under 25 employees?
Justworks, in most cases. The published pricing means you can model the cost in ten minutes, there is no implementation fee, and the product is built for small teams rather than adapted down to them. TriNet requires a minimum worksite employee count and its sales motion is oriented toward larger books. Below about 15 people, run a third option too: a payroll platform plus an insurance broker plus a standalone workers' comp policy often beats both PEOs on total cost.
Does either one include an applicant tracking system?
No. TriNet lists payroll, tax administration, HR expertise, benefits administration, workers' comp administration, platform access, and onboarding tools as what the fee covers. Recruiting is not on the list. Justworks includes ATS integrations on its PEO plans, which means it connects to a hiring system rather than being one. Both assume you bring your own recruiting stack, so budget it as a separate line before you sign.
How hard is it to switch from TriNet to Justworks, or the other way?
Harder than switching payroll software, because payroll history, state tax registrations, benefits enrollment, and workers' comp coverage all move at once. Plan on a 30 to 60 day transition and try to time it to a January 1 benefits date so employees do not restart deductibles mid-year. Justworks advertises no implementation fee. TriNet notes that many PEOs charge a one-time onboarding fee, so ask about it in writing before you sign.
Should I worry that TriNet lost 11% of its worksite employees?
It is worth understanding rather than worrying about. TriNet repriced its book to fix an insurance cost ratio that had run above target, customers left over price, and average worksite employees fell 11% year over year in Q2 2026. The margin repair is largely done, which lowers the odds of another shock renewal. It also means TriNet has more reason to negotiate than a vendor with a full book. Use that.
Resources & Further Reading
Related Guides
- TriNet Pricing in 2026
Backing the real per-employee rate out of the filings
- Justworks Pricing in 2026
PEO Basic, PEO Plus, and Payroll costs plan by plan
- PEO vs EOR
Which model applies when your team crosses a border
- Applicant Tracking System Cost
Budget the hiring layer neither PEO includes
External Sources
- Justworks Pricing Page
Published plan rates, add-on prices, and feature matrix
- TriNet PEO Pricing Page
The flat PEPM model and the $150 worked example
- TriNet Investor Relations
Quarterly revenue, worksite employees, insurance cost ratio
- BLS: Employer Costs for Employee Compensation
What benefits actually cost as a share of total pay
