ADP Run vs Paychex Flex: Full Comparison (2026)
Pricing, features, scores, and a clear verdict on which one is right for you.
The bottom line
ADP Run positions itself as "enterprise-grade payroll and hr for small business" while Paychex Flex goes after "full-service payroll and hr with dedicated support" — so the right pick depends on which problem you're actually solving. ADP Run (founded 1949) has had more time to build out its ecosystem and integrations, while Paychex Flex (1971) tends to move faster on modern UX and newer workflows.
At a glance
| ADP Run | Paychex Flex | |
|---|---|---|
| Our score | 74/100 | 72/100 |
| Starting price | $62/mo | $39/mo |
| Free tier | No | No |
| Best for | Enterprise-grade payroll and HR for small business | Full-service payroll and HR with dedicated support |
Pricing comparison
ADP Run
Pricing verified 2026-04-02
Paychex Flex
Pricing verified 2026-04-02
Calculate your cost
Feature comparison
core
| Feature | ADP Run | Paychex Flex |
|---|---|---|
| Payroll | Yes | Yes |
| Tax filing | Yes | Yes |
| Benefits admin | Yes | Yes |
| Onboarding | Yes | Select+ |
| Time tracking | Enhanced+ | Select+ |
advanced
| Feature | ADP Run | Paychex Flex |
|---|---|---|
| Garnishments | Yes | Yes |
| Workers comp | Yes | Yes |
| Background checks | Enhanced+ | No |
| SUI management | Enhanced+ | No |
| Dedicated specialist | No | Select+ |
| Retirement plans | No | Yes |
integrations
| Feature | ADP Run | Paychex Flex |
|---|---|---|
| QuickBooks | Yes | Yes |
| Xero | Yes | Yes |
| Time & attendance | Yes | Yes |
| 401k providers | Yes | No |
| Point of sale | No | Yes |
Ratings breakdown
What the data tells us
Key capabilities you'd miss
Choosing ADP Run means going without Dedicated specialist, Retirement plans, Point of sale (which Paychex Flex offers). Choosing Paychex Flex means losing Background checks, SUI management, 401k providers. These are the features that typically drive the final decision — check whether your workflow depends on any of them before committing.
What company size tells you
ADP Run (50,000+ employees) has the engineering bench to ship features across many fronts but may iterate slower on individual requests. Paychex Flex (15,000+ employees) typically ships faster on its core product but may lag on peripheral features. Consider which matters more for your roadmap.
Choose ADP Run if...
- You're ready to invest from $62/mo
- You value powerful features over simplicity
- You need enterprise-grade capabilities
Choose Paychex Flex if...
- You're ready to invest from $39/mo
- You value powerful features over simplicity
- You need enterprise-grade capabilities
Frequently asked questions
Is ADP Run or Paychex Flex better?
ADP Run scores 74/100 compared to Paychex Flex's 72/100 on VendorVS. However, the best choice depends on your needs — ADP Run excels at ease of use (6/10) while Paychex Flex scores 6/10.
How much does ADP Run cost compared to Paychex Flex?
ADP Run starts at $62/mo. Paychex Flex starts at $39/mo. Paychex Flex is the more affordable option.
Does ADP Run or Paychex Flex have a free plan?
Neither ADP Run nor Paychex Flex offers a free tier. ADP Run starts at $62/mo and Paychex Flex at $39/mo.
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