No. Gusto is payroll and HR software — it is not a Professional Employer Organization. Gusto processes payroll and offers basic HR tools, but does not enter into a co-employment arrangement. You remain the sole employer of record for all employees. A PEO like Justworks takes on shared employment responsibilities, including liability for federal employment taxes and access to large-group benefit pools.

Why is Justworks so much more expensive than Gusto?

Justworks costs more because it provides fundamentally more. As a CPEO-certified PEO, Justworks takes on co-employment liability, provides access to large-group health insurance rates that a small business cannot access independently, and includes dedicated HR compliance support. Gusto provides software tools only. The price difference reflects the service model difference.

At what size should I switch from Gusto to a PEO like Justworks?

Most businesses find that a PEO becomes cost-effective in the 10 to 25 employee range. Below that, co-employment overhead and minimum fees may outweigh the benefits. Once you have 10 or more employees, the savings on health insurance alone often offset the PEO cost — and HR compliance support becomes more valuable as employment risk grows. Many businesses start on Gusto and migrate to a PEO at this inflection point.

Can I use Gusto as a stepping stone before moving to a PEO?

Yes, and many businesses do exactly that. Gusto is a reasonable solution for very early-stage companies that need simple payroll. As headcount grows and the business needs better benefits access, dedicated HR support, and more robust compliance infrastructure, a PEO like Justworks is the natural next step. The migration process involves new employment paperwork but is manageable with PEO support.

Justworks vs Gusto (2026): PEO vs Payroll Software | PEO Authority

Justworks

Full-service PEO with co-employment and benefits access

IRS CPEO CertifiedEst. 2012

Gusto

Payroll and HR software for small businesses

Est. 2011

Our Pick: Justworks|

Justworks and Gusto are not direct competitors — they serve different needs at different stages of business.

Side-by-Side Comparison

Feature

Justworks

Gusto

Service Type

Full-service PEO

Payroll and HR software

IRS CPEO Certified

Yes

Co-employment

Yes — shared employer liability

No — you remain sole employer

Pricing Model

Flat rate — $59 to $99 PEPM

$40 base plus $6-12 per employee

Health Insurance Access

Large-group rates — real savings

Limited small-group market access

HR Compliance Support

Full HR compliance included

Basic — limited compliance guidance

Workers Comp

Included in co-employment

Not included — arrange separately

Best For

1 to 500 employees

1 to 100 employees

HR Support

Dedicated HR support team

Limited — help docs and chat

Setup Complexity

Moderate — co-employment paperwork

Simple — very fast setup

Justworks Overview

Justworks

New York, NY · Est. 2012

CPEO ✓

Best For

SMBs wanting a true PEO co-employment arrangement with strong health benefits

Pricing

$59 to $99 per employee per month (flat rate)

Strengths

✓True PEO co-employment — employer liability is shared

✓IRS CPEO certified for maximum tax protection

✓Access to large-group health insurance rates

✓Transparent flat-rate pricing

Considerations

−More expensive than payroll-only software

−Co-employment model is not necessary for every business

View full Justworks profile

Gusto Overview

Gusto

San Francisco, CA · Est. 2011

Best For

Very small businesses needing simple, affordable payroll and basic HR tools

Pricing

$40 per month base plus $6 to $12 per employee per month

Strengths

✓Very affordable starting price

✓Easy to use — minimal setup required

✓Solid payroll, contractor payments, and basic benefits

✓Good fit for freelancers and very small teams

Considerations

−Not a PEO — no co-employment, no shared employer liability

−Not IRS CPEO certified

−Limited HR compliance support compared to a full PEO

−Health insurance access is more limited than a PEO pool

Our Verdict

✦Our Pick: Justworks

Justworks and Gusto are not direct competitors — they serve different needs at different stages of business. Gusto is payroll and HR software. Justworks is a full-service PEO that takes on co-employment, HR compliance, and benefits access as a genuine business partner. For a solo operator or very small business with simple payroll needs and a limited budget, Gusto is a reasonable starting point. Once you have 10 or more employees and want real benefits access, shared employer liability, and dedicated HR support, Justworks delivers substantially more value.

Choose Justworks if...

Choose Justworks if you have 10 or more employees, want access to competitive health insurance, need HR compliance support, and are ready for a true PEO co-employment arrangement.

Choose Gusto if...

Choose Gusto if you are very early-stage (under 10 employees), have simple payroll needs, and are not yet ready for the costs or structure of a full PEO.

Frequently Asked Questions

Editorial Independence

This comparison is editorially independent. Featured placements elsewhere on PEO Authority are paid visibility — they do not influence comparison verdicts or analysis. All information is based on publicly available data and IRS CPEO certification records.

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