OnPay vs Justworks

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.

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Justworks

Justworks is a Professional Employer Organization (PEO) that gives small businesses access to Fortune 500-level benefits and simplified payroll. By co-employing your team, Justworks handles compliance, payroll taxes, and benefits administration. It is ideal for small businesses that want premium benefits without an in-house HR team.

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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

• ✓Access to high-quality health, dental, and vision benefits typically reserved for large companies
• ✓Simple flat-rate pricing with no hidden fees
• ✓Excellent customer support with fast response times
• ✓Handles all compliance and payroll tax filings

Cons

• ✗More expensive than software-only alternatives due to PEO model
• ✗Only available for US-based employees
• ✗Less flexible than standalone HR software for customization

Best For

Small businesses wanting affordable, full-service payroll with no hidden fees

Best For

Small businesses wanting Fortune 500 benefits