Gusto wins for small businesses (2–50 employees) — simpler UI, transparent pricing ($46/month + $6/employee), excellent benefits management, and setup that takes hours not weeks. ADP wins for larger organizations (50+ employees) that need multi-state compliance complexity, custom reporting, or enterprise HR integrations. Most San Diego SMBs are over-buying with ADP.
Gusto made payroll approachable. ADP made it enterprise-grade. Here is the honest difference for small and mid-sized businesses.
| Feature | Gusto | ADP |
|---|---|---|
| Starting price | $46/mo + $6/employee | Custom quote (often $150+/mo) |
| Full-service payroll | Yes — all 50 states | Yes — all 50 states |
| HR tools | Built-in (offer letters, PTO, docs) | Available (add-on cost) |
| Benefits admin | Health, dental, vision, 401k | Full suite (enterprise pricing) |
| Time tracking | Basic included, upgrade for more | Robust (add-on) |
| Onboarding | Digital, self-serve | Guided, more manual |
| Integrations | QuickBooks, Xero, Slack, etc. | Broad but complex setup |
| Mobile app | Good | Good |
| Customer support | Chat + email, good for SMB | Dedicated rep (higher tiers) |
| Compliance tools | Good for most SMBs | Best-in-class for complex needs |
| Tier | Gusto | ADP |
|---|---|---|
| Simple (contractors) | $6/contractor/mo | Custom |
| Core (employees) | $46/mo + $6/employee | ~$150+/mo + per employee |
| Complete (HR+) | $80/mo + $12/employee | Custom |
| Enterprise | Concierge pricing | Enterprise contract |
Gusto wins for small businesses under 100 employees — cleaner UX, transparent pricing, and built-in HR tools make it the obvious choice. ADP wins when you need multi-state compliance complexity, union payroll, or deep HRIS integration at enterprise scale. If you're under 50 employees and not running a complex multi-state operation, Gusto is almost certainly the right call.