How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- ADP TotalSource is the full service heavyweight: the largest PEO in the US, with big company benefits and compliance depth for mid sized firms, priced by quote as a share of payroll.
- Justworks is the transparent PEO, publishing flat per employee pricing from $79 per employee per month, which makes it the easiest serious PEO to budget.
- TriNet specialises by industry, with dedicated pods for technology, life sciences, and financial services, and Insperity sells the named HR partner model with regional service teams.
- Gusto, from $49 a month plus $6 per person, is not a PEO at all: it is payroll and HR software for small teams that keep employment in house, which is the right answer for many firms under 50 people.
- Understand the model before the brand: a PEO co-employs your staff and shares liability, an HR platform does not. The contract, not the brochure, says which you are buying.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
 ADP TotalSource | Full service PEO at mid sized scale | See website | No |
 TriNet | Industry specific HR expertise | See website | No |
 Justworks | Transparent published PEO pricing | $79 per employee per month | No |
 Insperity | A named HR partner and white glove service | See website | No |
 Rippling | HR, IT, and finance in one system | $8 per user per month | No |
 Gusto | Small team payroll and HR software | $49 per month plus $6 per person | No |
 Paychex | Payroll depth with PEO and service options | See website | No |
 Deel | Hiring employees across borders | See website | No |
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The best HR companies
#1ADP TotalSource
Best for: Full service PEO at mid sized scale4.3/5 on
G2 (595 reviews, checked Oct 2026)
Visit adp.com
Starting priceSee website
Free planNo
ADP TotalSource is the default shortlist name for a reason. It wraps ADP's payroll engine, a large benefits pool, compliance support, and HR guidance into one co-employment relationship, and it scales from a few dozen employees to several hundred without changing vendors. For a mid sized company drowning in multi state tax registrations and benefits renewals, that single accountable partner is the product.
The trade off is price transparency and flexibility. You will negotiate, your quote will reflect your industry and claims history, and leaving a PEO is a project in itself. TotalSource fits companies roughly from 50 to 500 employees that want the full stack handled.
What we like- The largest PEO in the US by worksite employees, with Fortune 500 grade benefits a 60 person firm could never buy alone
- Deep payroll, tax, and multi state compliance machinery from the ADP parent
- Dedicated HR support and risk and safety services included
- IRS certified PEO status, which clarifies tax liability
Watch out for- Quote based pricing, commonly modelled as a percentage of payroll or roughly $100 to $200 per employee monthly in comparisons
- Contracts and renewal terms deserve close reading
- A big company's processes, which smaller firms can find rigid
#2TriNet
Best for: Industry specific HR expertise4.2/5 on
G2 (2,038 reviews, checked Oct 2026)
Visit trinet.com
Starting priceSee website
Free planNo
TriNet's difference is specialisation. A life sciences startup and a wealth management firm have different hiring, equity, and compliance shapes, and TriNet staffs for those differences rather than offering one generic HR desk. In regulated or high wage sectors, that fluency shows up in the quality of advice, not just administration.
The trade off is that generalists pay for depth they may not use, and the pricing conversation is entirely bespoke. TriNet fits growth stage companies in its core verticals, roughly 15 to 500 employees, that want HR counsel which speaks their industry's language.
What we like- Organised into industry verticals, technology, life sciences, financial services, nonprofits, with specialists who know each sector's roles and rules
- A certified PEO with strong benefits access for its size classes
- Solid technology platform for employees and administrators
- Compliance support tuned to regulated industries
Watch out for- Quote based per employee pricing, with comparison estimates commonly in the $125 to $250 monthly range
- Less compelling outside its strength verticals
- The sales and onboarding process is a commitment, not a signup
Starting price$79 per employee per month
Free planNo
Justworks built its name on the sentence the rest of the industry avoids: here is the price. A small business can model its PEO cost on the website tonight, $79 per employee for the PEO tier with a Plus tier above, and that honesty, combined with a genuinely pleasant platform, is why it owns the small team segment of the market.
The trade off is service depth. Justworks is a product led PEO; companies wanting a strategist in the room will outgrow it upward. Justworks fits teams from about 5 to 150 employees that want co-employment benefits and compliance without a procurement saga.
What we like- Published flat pricing, PEO Basic from $79 per employee per month, in an industry that almost never publishes
- A clean, modern platform employees actually find easy
- 24/7 support and strong benefits access for its size
- A certified PEO with simple onboarding for small teams
Watch out for- Less white glove guidance than Insperity or TotalSource
- Per employee pricing adds up linearly as headcount grows
- Larger companies eventually want the deeper service benches of the big PEOs
#4Insperity
Best for: A named HR partner and white glove service4.3/5 on
G2 (422 reviews, checked Oct 2026)
Visit insperity.com
Starting priceSee website
Free planNo
Insperity sells the relationship version of a PEO. Payroll and benefits are table stakes; the pitch is a named partner who learns your business, sits in on the hard conversations, and helps an owner build the HR function they cannot hire yet. Companies that value that describe the service in personal terms, which is the point.
The trade off is cost and style. It is among the pricier routes in, and hands on service is wasted on a company that only wants cheap payroll. Insperity fits companies roughly from 25 to 500 employees whose owners want senior HR counsel alongside the administration.
What we like- A dedicated HR business partner model, with named service teams and roughly 90 regional offices
- A certified PEO with decades in the market and a premium service reputation
- Strong support for performance management, training, and culture work beyond administration
- Good fit for owners who want a person, not a portal
Watch out for- Premium pricing to match the model, quote based, with comparisons placing it in the upper PEO range
- A five employee minimum and a traditional sales process
- Its full value appears in companies large enough to use the advisory layer
#5Rippling
Best for: HR, IT, and finance in one system4.8/5 on
G2 (13,464 reviews, checked Oct 2026)
Visit rippling.com
Starting price$8 per user per month
Free planNo
Rippling's insight is that HR data is company data. The same record that runs payroll should create the email account, assign the laptop, and issue the card, and Rippling is built to do exactly that. For technology forward companies, it removes a category of manual onboarding work that other entries here still leave to you.
The trade off is that you are buying a system to run, however automated, rather than a partner to lean on. Rippling fits companies from about 10 to 1,000 employees with an operations minded team that wants HR, IT, and finance unified and is happy to own the platform.
What we like- One platform for HR, payroll, benefits, plus IT device management and spend tools, built on a single employee record
- Automation is the deepest here: onboarding a hire can provision accounts and ship a laptop by rule
- Modular pricing from $8 per user per month lets you buy only what you use
- A PEO option exists if you later want co-employment
Watch out for- The modular bill grows as you switch on pieces, so model the full stack, not the entry module
- Software first means the advice layer is thinner than a service PEO's
- Implementation quality decides whether the automation delights or tangles
#6Gusto
Best for: Small team payroll and HR software4.6/5 on
G2 (13,355 reviews, checked Oct 2026)
Visit gusto.com
Starting price$49 per month plus $6 per person
Free planNo
Gusto is on this list to make the honest comparison most buyers need. Many companies shopping for an HR company actually need good payroll and tidy HR software, at $49 plus $6 a head, not a co-employment contract at ten times the cost. Gusto runs pay, files the taxes, administers benefits, and gives employees a friendly self service app, while employment stays entirely with you.
The trade off is responsibility. Workers compensation strategy, multi state compliance puzzles, and a harassment investigation are yours, possibly with a lawyer's help. Gusto fits US teams under roughly 50, and many beyond, whose HR is real but routine.
What we like- Published, simple pricing: a $49 base plus $6 per person on the entry plan
- Payroll that small business owners describe as genuinely pleasant, with benefits, onboarding, and time tools in the same place
- No co-employment and no long contract: your company stays the employer, plainly
- Strong support reputation among very small businesses
Watch out for- Software, not a service bench: complex HR problems remain yours to solve
- Pricing steps up through tiers for features like time tracking and advanced HR tools
- US focused, with international employees handled only through partner arrangements
#7Paychex
Best for: Payroll depth with PEO and service options4.1/5 on
G2 (1,748 reviews, checked Oct 2026)
Visit paychex.com
Starting priceSee website
Free planNo
Paychex is the flexible incumbent. A company unsure whether it needs software, services, or full co-employment can start in one Paychex lane and move to another as it grows, which is a genuinely useful property in a category where switching vendors is painful. Its payroll and tax machinery, especially across many states, is the core strength.
The trade off is clarity. You will work with sales to find your configuration, and quotes need line by line attention. Paychex fits companies from a handful of employees upward that value payroll certainty and a vendor that can change shape with them.
What we like- Payroll depth built over decades, with PEO, ASO, and standalone service levels to choose between
- One of the deepest multi state tax compliance benches in the market
- Scales from a five person firm to the enterprise inside one vendor
- Broad HR services, handbooks, and support options
Watch out for- Quote based pricing across a large catalogue, which takes effort to scope
- Experiences vary by local team in reviews more than the software led rivals
- The breadth that makes it flexible also makes the buying process heavier
#8Deel
Best for: Hiring employees across borders4.7/5 on
G2 (6,959 reviews, checked Oct 2026)
Visit deel.com
Starting priceSee website
Free planNo
Deel answers the question the rest of this list cannot: how do we employ someone in a country where we have no company. As employer of record it takes on the local employment, contract, and payroll compliance, letting a US company hire in Berlin or Bangalore in days. For distributed companies, that is not an HR convenience; it is the whole hiring strategy made legal.
The trade off is price and purpose. At roughly $599 per employee monthly for EOR, Deel is a market entry tool, not a domestic HR solution, and high headcount countries eventually justify your own entity. Deel fits companies hiring internationally now, from their first foreign employee to a genuinely global team.
What we like- Employer of record services in over 150 countries: Deel employs your hire locally and handles contracts, taxes, and benefits there
- Contractor management and global payroll in the same platform
- Fast onboarding compared with setting up foreign entities
- Published EOR pricing reported around $599 per employee per month
Watch out for- EOR pricing is premium by design and varies by country
- A platform led service, so local HR counsel depth varies
- US domestic HR is not its centre of gravity, it also offers a PEO, but the global product is the star
How we chose
We compared the HR companies named across 2026 buyer guides and PEO cost analyses, and selected to cover the four models a buyer actually chooses between: full service PEO, specialist PEO, transparent PEO, and the software and global alternatives. Pricing is stated only where a company publishes it or multiple comparisons agree on a range, and marked See website where quotes rule, which is most of the PEO market. We weighted the liability question, who employs your people and who shares the risk, above feature lists, because it is the decision with legal consequences. We did not request quotes or pose as buyers.
PEO or not: deciding the model first
Count your pain before you count vendors. If the pain is payroll errors, tax notices, and benefits you cannot buy at your size, a PEO's co-employment pool and machinery directly answer it, at a real price: comparisons commonly model $100 to $250 per employee per month all in, or a low single digit percentage of payroll. If the pain is disorganisation, scattered files, manual onboarding, software like Gusto or Rippling fixes it for a tenth of that, and an HR consultant by the hour can cover the rare hard problem.
Read any PEO contract for four things: the exact fee basis and what sits outside it, the benefits renewal mechanics, the exit terms and how your data and tax accounts transfer out, and which liabilities the PEO accepts in writing versus describes in conversation. Co-employment shares a defined slice of responsibility; it never transfers all of it, and you remain the employer who directs the work. Get two quotes at minimum: PEO pricing is negotiable, and the spread between first quotes and final ones is where this category's money is saved.
Frequently asked questions
What does a PEO actually do?
A professional employer organisation becomes co-employer of your staff for administrative and compliance purposes. It runs payroll and tax filing under its registrations, pools your employees into its benefits and workers compensation plans, and provides HR support and guidance. You keep directing the work, hiring, and firing decisions. In exchange you pay a fee, per employee monthly or as a percentage of payroll, and accept a contract that takes real effort to exit.
How much does an HR company cost?
It depends entirely on the model. HR software runs from Gusto's $49 base plus $6 per person to Rippling's modular per user pricing from $8. PEOs are quote based: current comparisons commonly model $100 to $250 per employee per month for the majors, with Justworks the exception that publishes from $79 per employee. Employer of record services for international hires run higher, around $599 per employee monthly in Deel's published reporting. Always compare total cost at your headcount, including setup and benefits administration.
What is the difference between a PEO and HR software?
Liability and employment. With a PEO, the provider co-employs your workers and contractually shares defined employment responsibilities and risks. With software, you remain the only employer and the vendor is a tool supplier: it files what you set up and advises through content and support, but the compliance buck stops with you. Software costs far less and suits routine HR; a PEO buys risk sharing and benefits scale that software cannot offer.
Can a small business with 10 employees use a PEO?
Yes. Most major PEOs start at five employees, and Justworks and Paychex actively serve the under 25 segment. The question is value, not eligibility: at 10 employees, price the PEO against Gusto plus a good benefits broker and an employment lawyer on call. If your industry carries high workers compensation costs or heavy compliance, the PEO often wins on the benefits and risk side alone. If your work is low risk office work, software usually wins on price.
What should we check before signing with an HR company?
Whether the PEO is IRS certified or ESAC accredited, which clarifies its standing and your tax position. The full fee schedule, including setup, benefits administration, and anything priced as a percentage. The exit clause: notice period, data return, and how tax accounts and benefits unwind at year end versus mid year. And references from companies your size in your industry, asked specifically about renewals and about the worst month they had together. The answers predict your experience better than any feature demo.
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Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.