The verdict
OnPay takes it, 4–2 on rounds.
There's no universal winner — Paychex goes deeper on enterprise infrastructure and PEO, OnPay goes deeper on transparency and specialized small-business niches, so match the platform to what your business actually needs, not just its size.
Choose Paychex if…
- • You want a genuine PEO to offload HR/benefits liability
- • You need 160+ reports or biometric time-clock hardware
Choose OnPay if…
- • You want the price on the page to be the price on the invoice
- • Your business is a church, farm, or nonprofit with specialized payroll needs
Round by round
- Round 1Pricing & TransparencyOnPay winsPaychex3/10
Only Essentials tier is publicly priced
- Flex Essentials price is published (~$39 + $5/employee)
- Select, Pro, Enterprise, and PEO all require a sales call
- Reviewer: 'a lot of hidden fees that is not disclosed'
OnPay9/10$49 + $6/employee
One published plan, no sales call required, first month free
- Single published plan, $49 + $6/employee, no sales call
- First month free plus free white-glove setup/migration
Source: OnPay pricing page
Paychex hides its real price behind a sales call; OnPay just publishes it.
- Round 2Core Payroll & Reporting DepthPaychex winsPaychex8/10
160+ reports
Biometric iris/finger-scan and facial-verification time clocks
- 160+ pre-built reports
- Biometric iris/finger-scan and facial-verification time clocks
Source: Paychex product data
OnPay6/10$0 extra for multi-state
No extra charge for multi-state payroll or year-end tax forms
- No extra charge for multi-state payroll or year-end tax forms
- Far fewer built-in reports and no biometric hardware options
Source: OnPay product data
Paychex goes deeper on reporting and hardware; OnPay keeps it simple and complete.
- Round 3HR Features & PEO OptionPaychex winsPaychex8/10
Flat PEPY pricing
Paychex PEO co-employment, large-group benefit access
- Flat per-employee-per-year PEO pricing with large-group benefit access
- HR support center and applicant tracking at top tiers
Source: Paychex PEO data
OnPay5/10$15 + $2/employee
Optional HR add-on; no PEO/co-employment offered
- Modest, affordably priced HR add-on ($15 + $2/employee)
- No PEO or co-employment option at all
- Core HR features require the separate paid add-on
Source: OnPay product data
Paychex will actually become your co-employer if you want; OnPay stays a payroll-and-light-HR tool.
- Round 4Niche & Specialized Payroll SupportOnPay winsPaychex5/10
General-purpose, no niche specialization
- General-purpose platform can serve almost any small-to-midmarket business
- No purpose-built support for clergy, agricultural, or nonprofit payroll
OnPay8/10Form 943 / H-2A support
Clergy housing-allowance exclusions plus agricultural and nonprofit handling
- Purpose-built clergy payroll (housing allowance, FICA/FUTA exemptions)
- Form 943 and H-2A visa worker support for agricultural employers
- Niche focus means less brand recognition than Paychex overall
Source: OnPay niche industry data
Paychex is general-purpose; OnPay is one of the few platforms actually built for clergy and farms.
- Round 5Ease of Use, Setup & Contract TermsOnPay winsPaychex4/10
Sales call required above Essentials
- 24/7 chat support at base tier
- Higher tiers require a sales call to set up
- Reviewer: service called 'non-existent or offensive'
OnPay9/10Month-to-month, free setup
- Month-to-month, no long-term contract, cancel anytime
- Free white-glove setup/migration plus a free first month
OnPay is built to get you running fast with no contract; Paychex asks for a sales call and, per reviewers, sometimes a fight.
- Round 6Customer Support & TrustOnPay winsPaychex4/10
4.2 / 1.1
One of the roughest Trustpilot scores in the category, 415 reviews
- 4.2/5 on both G2 and Capterra
- 1.1/5 on Trustpilot (415 reviews)
- Reviewer: service called 'non-existent or offensive'
Source: G2/Capterra/Trustpilot ratings
OnPay9/104.8 G2/Capterra AND 4.2 Trustpilot
- 4.8/5 on Capterra and G2
- 4.2/5 on Trustpilot too — no sharp rating-site split
Paychex splits hard between B2B praise and consumer complaints; OnPay just scores well everywhere, including Trustpilot.
Which one is for you?
Church, ministry, or clergy payroll
→ OnPay · OnPay specifically handles parsonage/housing-allowance exclusions
Farm or agricultural employer with H-2A workers
→ OnPay · Purpose-built Form 943 and H-2A visa worker support
Business wanting to fully offload HR liability via PEO
→ Paychex · Paychex PEO offers real co-employment with large-group benefit rates
Business that wants the price on the page to match the invoice
→ OnPay · One published plan, $49 + $6/employee, no sales call
Side by side
- Flex Essentials price is published and consistent (~$39 + $5/employee)
- All 50 states with local tax filing included on most tiers
- Flat per-employee-per-year PEO pricing
- Access to large-group benefit rates via co-employment
- One published plan with no tier ladder
- Multi-state filing included at no extra charge
- First month free plus free setup/data migration
- No extra charge for multi-state payroll or year-end filing
- Select, Pro, Enterprise, and PEO all require a sales call
- No international payroll or EOR option at all
- Fewer native identity/IT integrations than Rippling
- Higher tiers still require a sales call
- HR features (PTO, onboarding, org charts) require a paid add-on
- PTO, onboarding, and org charts all require a paid HR add-on
- No in-house PEO option
- Mobile app is the weakest part of the platform, missing desktop features