OnPay vs Paychex
A head-to-head comparison to help you pick the right tool
Last updated: April 30, 2026
OnPay
OnPay is a full-service payroll and HR platform designed for small and mid-size businesses. It offers unlimited payroll runs, automatic tax filing, and built-in HR tools at an affordable flat rate. OnPay is consistently rated as one of the best value payroll solutions for small businesses and supports a wide range of industries including restaurants, farms, and nonprofits.
Paychex
Paychex is a comprehensive payroll and HR services provider with decades of experience serving businesses of all sizes. It offers payroll processing, tax compliance, benefits administration, and HR support through both software and managed services. Paychex is a reliable choice for businesses that want a proven, full-service payroll partner.
Pros
- ✓Excellent value — flat monthly pricing with no per-run fees
- ✓Supports multiple pay schedules and unlimited payroll runs
- ✓Strong industry-specific features for restaurants, farms, and nonprofits
- ✓US-based customer support included on all plans
Cons
- ✗US-only — no international payroll support
- ✗Mobile app is less polished than competitors
- ✗Limited advanced HR features compared to full HRIS platforms
Pros
- ✓Highly reliable payroll processing with strong compliance track record
- ✓Scalable from small businesses to large enterprises
- ✓Dedicated HR advisors available for guidance
- ✓Strong time and attendance integrations
Cons
- ✗Interface feels dated compared to modern HR tools
- ✗Customer support can be slow to resolve complex issues
- ✗Pricing can be opaque with various add-on fees
OnPay vs Paychex: Side by Side
| Factor | OnPay | Paychex |
|---|---|---|
| User Rating | N/A | N/A |
| Category | Payroll Software | Payroll Software |
| Pricing Model | Paid | Paid |
| Starting Price | $40/mo + $6/person | $39/mo + $5/employee |
| Best For | Small businesses wanting affordable, full-service payroll with no hidden fees | Small to large businesses needing reliable payroll |
| Our Pick | — | — |
OnPay Features
- ✓Unlimited payroll runs
- ✓automatic tax filing
- ✓direct deposit
- ✓employee self-service
- ✓HR tools
- ✓benefits administration
- ✓PTO management
- ✓integrations
Paychex Features
- ✓Payroll processing
- ✓tax filing
- ✓benefits
- ✓HR administration
- ✓time tracking
Pricing Comparison
Our Take
Choose OnPay if small businesses wanting affordable, full-service payroll with no hidden fees. Choose Paychex if small to large businesses needing reliable payroll.
Best For
Small businesses wanting affordable, full-service payroll with no hidden fees
Best For
Small to large businesses needing reliable payroll
How OnPay and Paychex Are Similar
- •Both are Payroll Software platforms designed for business teams
- •Both offer web-based access with no software installation required
- •Both provide customer support and onboarding resources
- •Both integrate with popular third-party business tools
- •Both offer a trial or demo to evaluate before purchasing
Also Consider
If neither OnPay nor Paychex is the right fit, Multiplier is worth evaluating.
Multiplier
Startups and SMBs hiring internationally on a budget
From $40/contractor/mo
Frequently Asked Questions
What is the difference between OnPay and Paychex?
OnPay is best for small businesses wanting affordable, full-service payroll with no hidden fees. Paychex is best for small to large businesses needing reliable payroll.
Which is better, OnPay or Paychex?
Choose OnPay if small businesses wanting affordable, full-service payroll with no hidden fees. Choose Paychex if small to large businesses needing reliable payroll.
How much does OnPay cost?
OnPay starts at $40/mo + $6/person. Pricing model: Paid.
How much does Paychex cost?
Paychex starts at $39/mo + $5/employee. Pricing model: Paid.
Who should use OnPay?
Small businesses wanting affordable, full-service payroll with no hidden fees
Who should use Paychex?
Small to large businesses needing reliable payroll