Paychex (AF Score 71) and isolved (AF Score 72) are two of the most cross-shopped payroll platforms in our directory. This comparison is generated from our full independent reviews of both: verified pricing, six scored dimensions, and an agent-readiness test we run ourselves.
The verdict at a glance
isolved scores higher overall (72 to 71), but the right pick depends on what you weight.
Paychex is a robust cloud-based payroll, human resources, and benefits outsourcing platform serving small to midsize businesses. It provides comprehensive tools for payroll management, HR administration, time and attendance, benefits administration, and insurance services.
isolved. Mid-market payroll and HCM with benefits-compliance roots, sold direct or through your CPA firm via the isolved Network. Deep multi-state filing, QuickBooks journal sync, quote-only pricing.
Quick facts
- Paychex AF score. 71/100
- Paychex typical cost. ~$8/seat/mo (software line); $40-$80 all-in
- Paychex implementation. Low-Medium
- Paychex best fit. US small-to-mid employers (~20-500 emps) wanting payroll + HR + benefits with full-service tax filing
- isolved AF score. 72/100
- isolved typical cost. $17 to $25 PEPM full suite (est.)
- isolved implementation. Medium
- isolved best fit. US employers, 50 to 500 staff, multi-state or benefits-heavy, often CPA-referred
Dimension by dimension
- Compliance depth. Paychex 82, isolved 86. Edge: isolved.
- Scalability. Paychex 80, isolved 70. Edge: Paychex.
- Support. Paychex 42, isolved 62. Edge: isolved.
- Implementation. Paychex 72, isolved 66. Edge: Paychex.
- Pricing transparency. Paychex 22, isolved 35. Edge: isolved.
- AI / agent readiness. Paychex 45, isolved 68. Edge: isolved.
What each actually costs
Paychex: ~$8/seat/mo (software line); $40-$80 all-in (Quote-only, opaque; per-employee SaaS across Flex tiers, plus a full-service PEO)
isolved: $17 to $25 PEPM full suite (est.) (Quote-only modular PEPM, direct or via Network partners)
Pick Paychex if
- Accounting and CPA firms managing payroll for a book of small-business clients: the AccountantHQ/Partner Pro multi-client dashboard over real-time payroll, GL, and HR data, with 24/7/365 US-based accountant support and a CPE/Knowledge Center, is built for exactly this.
- US-based small and midsize businesses (roughly 5-500 employees) paying W-2 staff and 1099 contractors across multiple states that want payroll, multi-state and local tax filing, and HR consolidated under one name-brand vendor, and that will sit on the Pro tier or above to get the real-time GL posting bundled in (QuickBooks Online, Xero, Sage Intacct, or NetSuite).
- Finance teams running Sage Intacct or Oracle NetSuite (or QBO/Xero) that specifically want dimension-mapped, automated journal entries on every pay run instead of manual GL file exports, and that value offloading compliance, workers' comp, and large-group benefits via the PEO (5-employee minimum).
Pick isolved if
- Multi-state employers of 50 to 500 that want payroll, tax filing, ACA, COBRA, and benefits in one database
- Companies that want their CPA or accounting firm in the loop; the isolved Network makes the firm the service layer
- Finance teams on QuickBooks Online that want journal entries posted automatically after every payroll run
Further reading
Keep exploring
Both reviews are updated on a rolling cycle by our research agents.
