EOR vs PEO vs Contractor: What Does a UK Startup Actually Need?

The time has come: you are ready to scale abroad. Maybe you have found the perfect engineer in Poland, a developer in India or a sales lead in the United States. 

But as soon as you start researching how to hire them, you run into a wall of acronyms: EOR, PEO, IR35. So what do these actually mean for you?

In today’s article, we’ll break down what’s behind all the key terms to help you choose the right setup and start building your global team with confidence.

The difference between EORs, PEOs and Contractors

Each option brings something different to the table. Let’s start with a quick visual overview before unpacking them properly.

Key question	EOR	PEO	Contractor solutions
What problem does it solve?	Hiring employees abroad without an entity	Managing HR once you already have an entity	Flexible access to independent talent
Who is the legal employer?	EOR	Your company	No employer
What is it best for?	First international hires	Scaling local HR operations	Short-term or specialist work
Who runs payroll?	EOR	PEO	Contractor invoices you
Who handles taxes?	EOR	PEO	Contractor handles own taxes
Who is responsible for compliance?	EOR	Shared	Contractor
What is the main risk?	Cost of scaling over time	It requires an existing entity	Misclassification
How fast is it to hire internationally?	Fast	Medium	Fastest

EORs: outsourced employment

An Employer of Record (EOR) is a third-party provider that hires employees on your behalf in another country. Here is how it works:

• The EOR becomes the legal employer
• The startup manages the employee’s day-to-day work
• The EOR takes care of payroll, taxes and compliance in the local country

In other words, you get to hire the person you want without opening a local entity first. This model is especially useful for UK startups making their first international hires and wanting to avoid the admin that comes with setting up abroad.

Want to learn more? Check our guide on how to hire in the UK using an EOR. 

PEOs: HR and payroll support

A Professional Employer Organisation (PEO) helps you manage HR and payroll through a shared setup with your company. In this model:

• The startup is the legal employer
• The PEO handles payroll, HR admin and compliance support
• Responsibilities are shared between the company and the PEO

Unlike EOR, a PEO is used when you already have a local legal entity in place. It is more about taking the admin off your plate than acting as the employer.

Providers like Native Teams offer PEO services in multiple countries, so if you already have a legal entity in one of them, you can plug into their support there.

Contractor solutions: independent work arrangements

A contractor setup is all about independence and flexibility. Contractors are self-employed professionals who provide services to a company without being its employees. This means that:

• The contractor usually runs their own business (if self-employed)
• They invoice the company for the work they complete
• They are responsible for their own taxes and filings
• There is no traditional employment contract but there is a contractor agreement

In the UK, classification can get more complex. The term “contractor” is often used loosely, but in practice there are important legal distinctions between self-employed individuals, workers and employees. The key difference usually comes down to how much control the company has over the work and how the working relationship looks in practice.

This is where IR35 comes in. This UK tax legislation checks whether a contractor is genuinely self-employed or, in practice, working like an employee for tax purposes. This is especially relevant in the gig economy, where the line between contractor and employee can blur easily.

Because of this complexity, many companies use structured platforms to handle contractor payments, invoicing and compliance. This helps reduce risk and cuts down the admin that comes with working with contractors, especially across different countries.

Cost comparison: the “hidden” fees

Cost is usually one of the first aspects companies focus on, but the monthly fee is only part of the story. Depending on the setup you choose, extra costs can also creep up due to compliance issues, administrative work or challenges when scaling internationally. Let’s compare them depending on the different hiring models we have discussed:

Cost factor	EOR	PEO	Contractor solutions
Initial cost	Low-medium	Medium	High
Compliance risk	Lower	Medium	Higher
Admin workload	Lower	Medium	Can increase quickly
Entity required	No	Yes	No
Long-term scalability	More structured	Better for established operations	Can become harder to manage

As teams grow, companies usually start caring less about the cheapest option and more about what keeps things simple, compliant and scalable.

Which hiring model fits your stage?

There is no fixed path when it comes to hiring models. Startups mix and match them depending on their stage, location and hiring needs. Let’s take a closer look at what each option is best suited for.

EOR 

This setup works best when:

• You are making your first international hires
• You are testing new markets without committing to a local entity
• You need to hire quickly in different countries
• You are not ready to set up a local HR or legal infrastructure

It can become less efficient when headcount grows significantly in one single country. At that point, companies often reassess whether it makes sense to establish their own local entity instead.

Want to see what this looks like in practice? Check out our report on how Maince scaled its international workforce with Native Teams.

PEO

These are typically used when:

• You already have a local entity in place
• You are building or scaling a team in a specific country
• Your want to reduce HR and payroll workload as you grow
• You are operating in a more established, long-term setup

They are less useful if you need a fully outsourced employment solution or if you do not yet have a local entity.

Contractor solutions 

This is a great option when:

• You are in early-stage mode
• You are hiring for short-term, project-based or flexible work
• You are still testing roles, markets or product direction
• You need to move quickly without building a structure yet

The main issue appears when contractors start operating like employees, which can lead to misclassification and fines.

Final considerations

There is no single best hiring model, only the one that fits where you are right now. Contractors for early flexibility, EOR for first international hires and PEO once operations mature in individual countries.

The key is not choosing the best model in theory, but understanding what each one can do for your specific needs. In practice, that usually means removing the biggest bottleneck, whether that is speed, compliance or scaling capacity.