PEO vs EOR vs Payroll Software: Which Does Your Business Need?

When small businesses start hiring, three options come up again and again: payroll software, a professional employer organisation (PEO) and an employer of record (EOR). They sound similar and some vendors offer all three, but they solve different problems and are priced very differently. Choosing the wrong one can mean overpaying for services you do not need — or missing compliance obligations you did not know you had.

Payroll software

Payroll software calculates pay, withholds taxes, files payroll tax returns and pays employees and contractors. You remain the sole employer: you hold the legal entity, register with tax authorities, choose benefits providers and own compliance. Full-service providers such as Gusto, OnPay and ADP RUN automate tax filing and year-end forms.

• Typical pricing: a monthly base fee plus a per-employee fee
• Best for: businesses hiring in countries where they already have an entity
• You keep: full control over benefits, policies and employment contracts

Professional employer organisation (PEO)

A PEO co-employs your staff. You direct the work; the PEO becomes the employer for tax and benefits purposes, runs payroll, provides access to group health and other benefits, and supports HR compliance. Because a PEO pools many small businesses, it can often offer benefits that a small employer could not negotiate alone. Justworks is a well-known example.

• Typical pricing: a per-employee monthly fee that is higher than payroll-only
• Best for: US businesses that want better benefits and outsourced HR compliance
• Trade-off: less control over benefits plans and some policies

Employer of record (EOR)

An EOR legally employs a worker on your behalf in a country where you have no entity. The EOR issues a compliant local contract, runs local payroll, pays taxes and provides mandatory benefits, while the worker does your work day to day. Deel and Rippling both offer EOR services.

• Typical pricing: a per-employee monthly fee, often several hundred dollars
• Best for: hiring a few people in countries where setting up an entity is not yet worthwhile
• Trade-off: the highest cost per head, but far cheaper and faster than opening a subsidiary

Side-by-side comparison

• Who is the legal employer? Payroll software: you. PEO: shared (co-employment). EOR: the EOR.
• Do you need a local entity? Payroll software: yes. PEO: yes (in its country). EOR: no.
• Benefits: Payroll software: you choose providers. PEO: access to the PEO's group plans. EOR: local statutory and offered benefits.
• Cost per employee: Payroll software: lowest. PEO: medium. EOR: highest.
• Control: Payroll software: most. PEO: shared. EOR: least.

How to decide

1. Hiring only where you have an entity and happy to source benefits yourself → payroll software.
2. Hiring in the US and wanting larger-company benefits and HR support → PEO.
3. Hiring one or a few people in a new country → EOR.
4. Paying freelancers abroad → a contractor payments platform (often from EOR vendors).
5. Planning a large team in a new country → compare EOR costs with setting up an entity.

Cost example

For ten US employees, full-service payroll software might cost roughly $100–200 per month in software fees. A PEO might cost several hundred to over a thousand dollars per month, depending on services, but can save money on benefits premiums. Employing one person abroad through an EOR often costs around $600 per month in fees on top of salary and statutory costs. Use our payroll cost calculator to estimate the fully loaded cost of your team.

Switching between models

Businesses often move between models as they grow: from payroll software to a PEO when benefits become important, from a PEO back to payroll software when they can negotiate benefits directly, or from an EOR to their own entity once headcount in a country justifies it. Plan transitions at quarter or year boundaries and confirm how employment contracts and benefits transfer.

Frequently asked questions

Is a PEO worth it for a small business?

It can be if better benefits or HR compliance support matter and the PEO's fees are offset by lower benefits premiums or saved admin time.

Can I use an EOR for a contractor?

An EOR employs people; for genuine contractors, a contractor management platform is usually more appropriate and cheaper.

Which is cheapest?

Payroll software has the lowest fees; PEOs cost more; EORs cost the most per person but avoid setting up an entity.

Can I switch from a PEO to payroll software later?

Yes. Plan the move at a quarter or year end and arrange replacement benefits before leaving the PEO.