OnPay is the stronger choice when the deciding factor is day-to-day payroll software workflow fit, while ADP has the clearer case when pricing shape, deployment control, or rollout risk matters more. For software teams, the practical decision is not feature count; it is which product better supports teams comparing workflow fit, pricing, and operational control without forcing a costly migration six months later.
Quick comparison
| Feature | ADP | OnPay |
|---|---|---|
| Starting price | Free | $40/mo |
| Free plan | No | No |
| Open source | No | No |
| Self-hostable | No | No |
| G2 rating | Not listed | Not listed |
| Best for | teams evaluating managed payroll software through sales | payroll software teams starting around $40/month |
| Starting price | Pricing not publicly listed — requires demo or sales contact. | Paid plans start at $40/month. |
| Free plan | No | No |
| Open source | No | No |
| Self-hostable | No | No |
| Deployment model | saas | saas |
| Best for | teams evaluating managed payroll software through sales | payroll software teams starting around $40/month |
| Primary risk | Budget is harder to predict because pricing is not publicly listed. | Paid tiers may become expensive as seats, usage, integrations, or governance needs grow. |
Core workflow fit
Winner: OnPay. For core workflow fit, OnPay is the safer default because its catalog profile fits the way teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. ADP is positioned as payroll and hr for any size business, while OnPay is positioned as simple payroll for small business; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for the workflow the category is supposed to support, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. ADP can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan.
Ease of adoption
Winner: ADP. For ease of adoption, ADP is the safer default because its catalog profile fits the way teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. ADP is positioned as payroll and hr for any size business, while OnPay is positioned as simple payroll for small business; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for the workflow the category is supposed to support, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. OnPay can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan. Adoption also depends on who touches the system every week. A tool that is powerful for admins but slow for contributors creates shadow spreadsheets, skipped updates, and cleanup meetings. In this pair, ADP has the clearer adoption story for teams that want less training friction.
Reporting and visibility
Winner: ADP. For reporting and visibility, ADP is the safer default because its catalog profile fits the way teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. ADP is positioned as payroll and hr for any size business, while OnPay is positioned as simple payroll for small business; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for the workflow the category is supposed to support, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. OnPay can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan. Governance is where hidden costs show up. Compare permission boundaries, audit needs, export options, SSO expectations, and whether the deployment model matches your security review.
Integrations and automation
Winner: OnPay. For integrations and automation, OnPay is the safer default because its catalog profile fits the way teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. ADP is positioned as payroll and hr for any size business, while OnPay is positioned as simple payroll for small business; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for the workflow the category is supposed to support, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. ADP can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan.
Admin and governance
Winner: OnPay. For admin and governance, OnPay is the safer default because its catalog profile fits the way teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. ADP is positioned as payroll and hr for any size business, while OnPay is positioned as simple payroll for small business; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for the workflow the category is supposed to support, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. ADP can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan.
Cost at scale
Winner: ADP. For cost at scale, ADP is the safer default because its catalog profile fits the way teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. ADP is positioned as payroll and hr for any size business, while OnPay is positioned as simple payroll for small business; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for the workflow the category is supposed to support, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. OnPay can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan. Cost should be modeled over twelve months, not from the first plan label. Include seats, usage, storage, integrations, onboarding, and the time spent recreating automations.
Pricing deep-dive
ADP
- Free plan: not listed publicly.
- Entry paid tier: pricing not publicly listed — requires demo or sales contact.
- Pricing model: paid; license is proprietary; deployment type is saas.
OnPay
- Free plan: not listed publicly.
- Entry paid tier: starts at $40/month according to the catalog.
- Pricing model: paid; license is proprietary; deployment type is saas.
Pricing verdict: Neither product has a clean universal pricing win from catalog data alone. ADP is cataloged as: Free plan: not listed publicly. Entry paid tier: pricing not publicly listed — requires demo or sales contact. Pricing model: paid; license is proprietary; deployment type is saas. OnPay is cataloged as: Free plan: not listed publicly. Entry paid tier: starts at $40/month according to the catalog. Pricing model: paid; license is proprietary; deployment type is saas. Build the comparison around the plan that supports your real production workflow, not the cheapest plan each vendor advertises.
How to migrate from ADP to OnPay
What real users say
ADP: ADP users usually praise the parts that match its positioning as payroll and hr for any size business. The recurring criticism is predictable: once teams push it beyond that core use case, they run into plan limits, integration gaps, admin overhead, or migration work that was not obvious during evaluation.
OnPay: OnPay users usually praise the parts that match its positioning as simple payroll for small business. Complaints tend to cluster around pricing clarity, onboarding effort, reporting flexibility, or the amount of manual process needed to keep the system accurate over time.
Sources: Pattern synthesized from catalog data, vendor positioning, public pricing availability, and common review themes; verify current review excerpts before quoting users directly.
Final verdict
Choose ADP if...
- Choose ADP if your team needs payroll and hr for any size business and that positioning matches the work people will do every week.
- Choose ADP if its pricing model, deployment type, and governance profile are easier to approve than forcing OnPay into the same workflow.
- Choose ADP if migration risk is lower because your current data model, integrations, or team habits already resemble its default setup.
Choose OnPay if...
- Choose OnPay if your team needs simple payroll for small business and would otherwise customize ADP heavily to fit.
- Choose OnPay if it gives software teams a clearer path for the workflow being compared without adding admin work after launch.
- Choose OnPay if its free plan, paid entry point, open-source status, or managed service model better fits your procurement constraints.
Consider neither if: Consider neither if you need a fundamentally different payroll software model: open-source control when both are managed, managed support when both require ownership, or a narrower specialist tool for one workflow. In that case, review the broader category page and adjacent comparisons before committing.