PEO vs EOR for US Startups Hiring in the UK

For a US startup hiring its first employee in the UK, the practical question is usually not “PEO or EOR?” It is: do we hire through a UK Employer of Record now, or establish our own UK company and employ people directly?

That distinction matters because the US-style PEO model does not translate neatly into the UK. A PEO normally supports a business that already has its own employing entity. If your startup has no UK entity, an EOR is usually the relevant option because the EOR becomes the legal employer in the UK.

This guide explains how that structure works, what it should cover, the benefits and constraints, the real UK costs to model, how equity is affected and when setting up a UK Ltd company becomes the better decision.

PEO vs EOR in the UK: the simple answer

An Employer of Record employs the individual through its UK entity. The EOR issues the UK employment contract, runs PAYE payroll, makes the required deductions, administers pension enrolment and handles local employment administration. Your startup still directs the employee’s day-to-day work, objectives and performance.

A PEO or outsourced HR/payroll provider normally supports your own UK entity. Your company remains the legal employer and retains the associated responsibilities. Some global vendors use “international PEO” as a broad marketing term, so founders should always ask one direct question: which legal entity will appear as the employer on the UK contract?

• No UK entity: compare UK EOR providers.
• Existing UK entity: consider direct employment supported by payroll, HR or a PEO-style service.
• Committed long-term UK operation: compare the cost and control of a UK Ltd company against continuing with an EOR.

Even providers make this geographical distinction. Deel, for example, describes EOR as the option for hiring internationally without an entity, while its PEO service is specifically for US co-employment. That is why an American PEO comparison is not the right starting point for a UK launch.

What should a UK EOR actually handle?

A credible UK EOR should provide much more than international payroll. Its responsibilities should include:

• A locally compliant UK employment contract.
• PAYE payroll and payments to HMRC.
• Employer and employee National Insurance administration.
• Workplace pension assessment, enrolment and contributions.
• Statutory holiday, sick pay and family-leave administration.
• Benefits administration.
• Right-to-work checks and compliant onboarding.
• Employment changes, performance processes and termination support.
• Required employer insurance and employment records.

UK employees have local statutory rights regardless of where the parent company is based. For example, most full-time workers are entitled to at least 5.6 weeks of paid annual leave. The UK employer must also operate PAYE, meet workplace-pension duties and comply with local rules on sick pay, family leave, discrimination and dismissal.

The EOR should administer those obligations, but your startup still needs to manage the person properly. An EOR cannot repair an unclear role, weak management or a US employment policy copied into a UK contract without local adaptation.

The benefits for a US startup entering the UK

Faster access to UK talent

An EOR allows a startup to hire before its UK subsidiary, payroll and employment infrastructure are ready. That can be valuable when the business has identified a strong UK country leader, salesperson or engineer and does not want entity setup to delay the hire.

A lower-commitment way to test the market

The company can make its first one or two hires, test UK demand and learn how the local talent market works before committing to a permanent operation.

Local employment administration

The EOR should translate the offer into a compliant UK contract and administer payroll, pension and statutory obligations. This reduces the risk of a US founder unknowingly applying American employment assumptions in the UK.

A bridge to a UK Ltd company

An EOR does not need to be permanent. It can support the first phase, followed by a planned transfer to the startup’s own UK entity once the team and commercial opportunity justify it.

The constraints founders need to understand

The EOR is the legal employer

Your startup directs the work, but the employee is legally employed by another company. Contract changes, benefits, disciplinary steps and termination processes may need EOR involvement. That can feel less direct than employing the person through your own company.

The monthly fee increases with every hire

EOR fees are normally charged per employee, so the cost scales linearly with headcount. Entity, payroll and accountancy costs also increase, but not in the same way. This is why an EOR can be efficient for two people and expensive for ten.

Benefits may be standardised

Some providers offer fixed benefit packages or limited flexibility. Check private medical cover, pension contribution options, life assurance and any differences between your US and UK teams before making offers.

Immigration support is not automatic

Do not assume every EOR can sponsor every candidate. If a hire needs a UK visa, confirm whether the provider has the appropriate sponsor capability, whether the role is eligible and what additional costs and timescales apply.

An EOR does not eliminate UK tax questions

A US company can still create a UK permanent-establishment risk depending on what its UK employees do. HMRC states that a non-resident company may have a UK permanent establishment through a fixed place of business or an agent who habitually exercises authority to do business on its behalf. Senior commercial hires who negotiate or conclude contracts deserve particular attention. HMRC’s guidance explains the core tests.

The EOR solves the employment mechanism; it does not replace UK-US tax advice.

What does employing someone in the UK actually cost?

Budget in pounds because the employee’s salary, UK payroll liabilities, pension and benefits will all be based in GBP. If a global EOR invoices the US parent in dollars, ask it to show the underlying UK employment costs and foreign-exchange margin separately.

Your budget should include:

• Gross salary in GBP.
• Employer National Insurance. For the 2026/27 tax year, the standard employer rate is 15% above the relevant secondary threshold. HMRC publishes the current thresholds and rates.
• Workplace pension. The statutory employer minimum is generally 3% of qualifying earnings, although competitive startup packages may be higher. The Pensions Regulator provides the current rules.
• Benefits. Private medical insurance, life assurance and enhanced pension or family leave may be important for senior hires.
• EOR fee. Obtain this as a fixed GBP figure per employee per month.
• Deposits and pre-funding. Some providers require payroll funding in advance or hold a deposit.
• Foreign-exchange costs. Check the conversion rate and any transfer margin.
• Onboarding, offboarding and immigration charges. Confirm which are included.

For comparison, if an EOR quoted £500 per employee per month, the service fee alone would be £6,000 a year for one employee, £30,000 for five and £60,000 for ten. Those figures are illustrative—not a market promise—but they show why founders should model the structure again as headcount grows.

When does a UK Ltd company make more sense?

There is no legal headcount at which a US startup must leave an EOR. The decision is commercial and operational.

UK plan	Likely starting point
One or two hires while testing the market	EOR normally provides the simplest route
Three to five hires with uncertain long-term plans	Use an EOR, but model entity costs and a future transfer
Five or more planned hires over 12–18 months	Run a formal EOR-versus-entity comparison
Country leader, office, local contracts or established revenue	Consider a UK entity earlier, regardless of headcount
Seven to ten permanent employees	A UK Ltd company will often offer stronger economics and control

This is a planning guide, not a statutory threshold. A startup may establish a company with two employees because the UK is strategically important. Another may retain an EOR longer because headcount remains uncertain.

Registering a UK company is not, by itself, the expensive part. Companies House currently charges £100 for online incorporation and says registration is usually completed within 24 hours. Becoming ready to employ people takes more work: company governance, a registered address, banking, Corporation Tax, PAYE, payroll, pension arrangements, employers’ liability insurance, accounting support, employment contracts and ongoing filings.

A direct UK employer must register with HMRC and set up PAYE. GOV.UK also highlights pension duties and employers’ liability insurance as core steps when taking on staff. The official employer checklist is available here.

How should equity work for UK EOR employees?

US startups can award options or other equity to UK-based employees, but the structure and tax treatment should be reviewed before the offer is made.

The US parent may grant the equity while the EOR handles employment and payroll. However, the provider needs to understand any UK withholding and reporting obligations, and the documents must clearly explain the award. Do not simply copy the US option language into the UK offer.

EMI is a UK tax-advantaged option scheme with specific company and employee eligibility requirements. An employee hired through an independent EOR may not satisfy the same conditions as someone employed by the qualifying company or a qualifying group company. HMRC sets out the EMI framework.

Ask the provider and your UK tax adviser:

• Can the EOR administer payroll reporting connected with the award?
• Are options, RSUs or another structure more appropriate?
• Who is responsible for employer National Insurance if it arises?
• What happens to the award when the employee transfers to your UK company?
• How will the equity be explained alongside salary and UK benefits?

Which UK EOR providers should US startups consider?

A sensible shortlist can include Deel, Remote, Oyster, Rippling, G-P and Pebl. The important point is not the length of the country list; it is the quality of the provider’s actual UK employment operation.

Ask each vendor the same questions:

• Do you employ UK staff through your own UK entity or a partner?
• What is the complete monthly cost in GBP?
• Which benefits are included and which can be customised?
• What deposits or payroll pre-funding are required?
• What foreign-exchange margin applies?
• Can you support UK immigration where necessary?
• How are equity reporting and payroll withholding handled?
• What support is available during performance or termination processes?
• What are the costs and steps for transferring employees to our future UK Ltd company?
• Who carries accrued holiday and continuity-of-employment liabilities during that transfer?

Use the same employee profile, salary and benefits assumptions for every quote. That gives you a meaningful comparison rather than six different sales presentations.

How Dataworks helps US startups hire in the UK

Dataworks helps US AI, data, developer-tooling and software startups build UK teams. We can advise on the roles to hire first, realistic UK salaries and benefits, candidate availability, location strategy and how an EOR arrangement is likely to be received by the market.

We are not a legal, tax or EOR provider. Our role is to make sure the employment structure supports the actual hiring plan. If you expect one employee, the right answer may be different from a business planning a London office and eight-person GTM team.

For more detail on the candidate market, read our guide to London’s AI talent market. If you are planning your first UK hires, speak to Dataworks about the sequence, salaries and available talent.

The bottom line

For a US startup without a UK entity, an EOR is normally the relevant route. A US-style PEO is not a substitute for a UK legal employer.

Use an EOR when speed and flexibility matter, but understand the limits: recurring per-employee fees, less direct control, benefit constraints, equity administration and tax questions that sit outside the employment contract.

Once the UK team is likely to reach five or more employees and remain for 12–18 months, compare the full cost of establishing a UK Ltd company. At seven to ten permanent employees—or earlier if you are opening an office, employing a country leader or signing UK contracts—the case for your own entity often becomes stronger.