What does a PEO mean for the client's books?

Under a co-employment arrangement the PEO files payroll taxes under its own EIN, so the client will not have the payroll tax filings a standalone employer would. Payroll cost usually arrives as a consolidated invoice covering wages, taxes, benefits, and the service fee, which the firm then splits across the correct expense accounts rather than posting from a conventional payroll register.

Does Justworks integrate with QuickBooks and Xero?

Yes. General ledger integrations post payroll journals to QuickBooks Online, Xero, and NetSuite, with mapping so wages, taxes, and benefits land in the right accounts. Firms generally set the mapping up once at onboarding, since the consolidated invoice is otherwise tedious to allocate each cycle.

How does it compare to Gusto?

Gusto is a payroll platform, so the client stays the employer of record and keeps its own tax filings. Justworks is a PEO, taking on co-employment and providing access to large-group benefits rates. Clients wanting cheaper payroll usually pick Gusto; clients where health insurance cost or compliance risk is the binding constraint pick the PEO.

When should a client leave a PEO?

Typically when headcount grows enough to obtain competitive group insurance directly, since the per-employee fee scales while the benefits advantage narrows. Firms should plan the exit around a plan year boundary, as unwinding co-employment mid-year creates split tax filings and complicates year-end reporting.

Justworks

HR Payroll

Website: justworks.com

Justworks at a glance

Best for: US small businesses wanting group-rate benefits
Pricing model: Per employee per month, tiered by service level
Deployment: Cloud, with iOS and Android apps
Regions: United States
Key integrations: QuickBooks Online, Xero, NetSuite, Greenhouse

Last reviewed July 2026. Pricing and features change frequently — confirm current details with the vendor.

Justworks is a professional employer organization that bundles payroll, benefits, compliance, and HR administration for small US businesses. Under the co-employment model, it becomes the employer of record for tax and benefits purposes, which is what gives client companies access to health insurance, 401(k), dental, vision, and commuter benefits at large-group rates they could not obtain on their own headcount.

How accounting firms use it

Firms usually meet the platform through a client already on it rather than by recommending it. The practical work is reconciliation: because the PEO files payroll taxes under its own EIN, the client’s books show a consolidated service invoice instead of a conventional payroll register, and the firm allocates that invoice across wages, employer taxes, benefits, and fees.

Setting up the general ledger integration at onboarding is what makes this manageable. Once mapping is configured, journals post automatically each cycle rather than requiring manual splitting from a PDF invoice.

Key features

Payroll runs handle salaried and hourly staff, contractors, off-cycle payments, and multi-state employees, with tax calculation and filing handled by the PEO. Benefits administration covers enrolment, life event changes, and carrier communication. Compliance support spans employment law guidance, workers’ compensation, and state registration — the area small clients most often underestimate when hiring across state lines.

Reporting gives firms the wage, tax, and benefits detail needed for financial reporting, year-end work, and workers’ compensation audits.

Who it’s best for

Small US businesses, typically under 100 employees, where benefits quality is a hiring constraint or where multi-state employment creates compliance exposure the client cannot manage internally.

The model does not suit everyone. Clients that mainly want cheap, reliable payroll are usually better on Gusto or Patriot Payroll, which cost less and keep the client as employer of record. TriNet is the closest direct PEO comparison, with a larger enterprise footprint.

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Justworks FAQ

What does a PEO mean for the client's books?: Under a co-employment arrangement the PEO files payroll taxes under its own EIN, so the client will not have the payroll tax filings a standalone employer would. Payroll cost usually arrives as a consolidated invoice covering wages, taxes, benefits, and the service fee, which the firm then splits across the correct expense accounts rather than posting from a conventional payroll register.
Does Justworks integrate with QuickBooks and Xero?: Yes. General ledger integrations post payroll journals to QuickBooks Online, Xero, and NetSuite, with mapping so wages, taxes, and benefits land in the right accounts. Firms generally set the mapping up once at onboarding, since the consolidated invoice is otherwise tedious to allocate each cycle.
How does it compare to Gusto?: Gusto is a payroll platform, so the client stays the employer of record and keeps its own tax filings. Justworks is a PEO, taking on co-employment and providing access to large-group benefits rates. Clients wanting cheaper payroll usually pick Gusto; clients where health insurance cost or compliance risk is the binding constraint pick the PEO.
When should a client leave a PEO?: Typically when headcount grows enough to obtain competitive group insurance directly, since the per-employee fee scales while the benefits advantage narrows. Firms should plan the exit around a plan year boundary, as unwinding co-employment mid-year creates split tax filings and complicates year-end reporting.

Justworks Alternatives

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Justworks at a glance

How accounting firms use it

Key features

Who it’s best for

Justworks FAQ

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