Cross-Border Payroll for International Employers

As international mobility becomes an embedded feature of business operations — not an exceptional circumstance — managing payroll across borders has become one of the most operationally complex and compliance-sensitive challenges for international employers. The risks are significant: inadvertent permanent establishment, unexpected tax registrations, unfunded social security liabilities, and employee disaffection when net pay is unexpected. This guide sets out the key principles and available structures for UK employers with overseas employees.

The Fundamental Principle: Each Jurisdiction Has Its Own Rules

The most important thing to understand about international payroll is that there is no single global framework. Every country has its own income tax withholding requirements, social security systems, payroll registration obligations, and employment law — and many have local compliance obligations that apply from the first day an employee works in the country, regardless of what the employment contract says or where the employer is incorporated.

A UK company that employs a software developer working remotely from Portugal, a sales manager based in Dubai, and a compliance officer in Singapore is operating three separate payroll compliance regimes simultaneously. It cannot simply pay them in GBP to their overseas bank accounts and assume UK PAYE covers the obligation. In most cases, it does not.

UK PAYE for Overseas Employees: When Does It Apply?

UK PAYE applies to employment income where the employee is:

• UK resident and working for a UK or overseas employer; or
• Non-UK resident but working in the UK for a UK employer.

If an employee is not UK resident and is not working in the UK, there is generally no UK PAYE obligation. The employer's tax withholding obligation is governed by the country where the employee works, not the employer's country of incorporation.

However, there are complications:

• Short-term UK visitors: an employee who visits the UK to work for even a few days may trigger UK PAYE withholding obligations, subject to treaty relief (the 183-day rule under most double tax treaties provides relief, but it must be claimed, not assumed).
• Business trips vs working: HMRC distinguishes between attendance at a UK office for business purposes and working in the UK. The distinction can be blurry.
• Director of a UK company: a non-resident director of a UK company receiving director's fees may have a UK tax liability on those fees even if they never visit the UK.

Social Security for International Employees

Social security (national insurance in the UK) is governed by a separate set of bilateral treaties — the social security conventions — that are distinct from double tax treaties.

For employees working in EU/EEA countries, the UK's post-Brexit social security coordination framework means that, in most cases, an employee should be subject to social security in the country where they work, not the UK. An A1 certificate (for EU assignments) or an equivalent certificate under bilateral agreements (for the US, Australia, Japan, and others with bilateral treaties) can certify which country's social security regime applies and prevent double contributions.

For countries without a bilateral social security agreement, the employee may face contributions in both the UK and the host country simultaneously — a potentially significant cost for both employer and employee.

Employer of Record (EOR): The Practical Solution

For most businesses with employees in jurisdictions where they do not have a local legal entity, an Employer of Record (EOR) service is the most practical compliance solution.

An EOR acts as the legal employer of your employees in the target country. It:

• Registers for payroll taxes and social security in the local jurisdiction.
• Runs compliant local payroll (income tax withholding, social security deductions).
• Issues employment contracts compliant with local employment law.
• Administers statutory benefits (annual leave entitlements, sick leave, parental leave).
• Manages termination in compliance with local law (which may be very different from UK employment law).

The employer pays the EOR a per-employee service fee (typically $300–$1,000 per employee per month depending on the country and service level) and funds the gross employment cost including the EOR's employer social security contributions.

Leading EOR providers include Deel, Remote, Rippling, Papaya Global, and Velocity Global. They differ in technology quality, country coverage, local HR expertise, and pricing structure. For one or two employees in a single country, the EOR route is almost always preferable to setting up a local entity; for ten or more employees in a country over the medium term, the entity route may become more cost-effective.

Important: the EOR is the legal employer for employment law purposes. Employment disputes, unfair dismissal claims, and redundancy obligations are managed by the EOR but ultimately flow back to the client business financially. Ensure the EOR agreement clearly defines liability allocation.

IR35 and Overseas Contractors

IR35 — the off-payroll working rules — applies to contractors who provide services through an intermediary (typically a personal service company, or PSC) but would, absent that structure, be employed by the end client.

For an overseas contractor providing services to a UK company:

• If the contractor operates through a PSC and IR35 applies, the UK company (as a medium or large business) must determine whether the engagement falls inside IR35 and operate PAYE accordingly.
• The location of the contractor is not determinative. What matters is the nature of the engagement: direction, control, substitution rights, integration into the business.
• An overseas contractor working remotely for a UK business through a PSC on an ongoing, integrated basis is at risk of IR35 applying.

The practical consequence: many UK businesses have switched overseas contractors from PSC engagements to direct contractor arrangements (outside IR35 if genuinely self-employed) or to EOR employment arrangements to remove the uncertainty.

Shadow Payroll

Where a UK employee is seconded to a foreign subsidiary or affiliate — or a foreign employee is seconded to the UK — a shadow payroll may be required. A shadow payroll runs alongside the primary payroll to ensure that the employee's income is correctly reported and tax withheld in the host country, while the primary payroll continues to run in the home country.

This is common in large corporations with significant secondment programmes. It requires close coordination between the home-country payroll team, the host-country payroll team, and the employee's personal tax advisers to ensure:

• Tax is withheld in the correct jurisdiction.
• Employer and employee social security contributions are made in the correct jurisdiction.
• Benefits (company car, private health insurance, housing allowance) are correctly valued and reported in the host country.
• The employee's overall tax position is managed through a tax equalisation arrangement (where the employer ensures the employee pays no more or less tax than they would have at home — common for long-term secondees) or a tax protection arrangement.

Banking for International Payroll

The banking implications of international payroll are often underestimated:

• Employees typically want to be paid in local currency to a local bank account. A UK employer paying in GBP to an overseas employee's GBP account forces the employee to bear FX conversion costs and risk — poor for staff satisfaction.
• EOR providers handle local currency payroll as part of their service.
• For direct international payroll, a multi-currency payment solution (such as Wise Business, Airwallex, or Convera) can process payroll in multiple currencies from a single platform at near-mid-market rates, significantly more efficiently than running payments through a high-street bank.
• Employers should also consider FX hedging for payroll: if you have a predictable monthly payroll in EUR or AED, forward contracts can lock in the sterling cost in advance, removing volatility from the payroll budget.

Key Risks to Manage

Permanent establishment risk: if employees in an overseas country have authority to conclude contracts on behalf of the UK company, or if the company has a fixed place of business there, the company may have created a permanent establishment — triggering corporate tax obligations in that jurisdiction. Legal and tax advice should be taken before hiring in any new country, not after.

Employment classification: some countries distinguish sharply between employees and contractors, with significant penalties for misclassification. In France, Spain, and many Latin American jurisdictions, engaging workers as "freelancers" who are economically dependent on a single client is routinely reclassified as employment.

Termination risk: UK employers accustomed to short UK notice periods and reasonable redundancy costs can be surprised by the extended notice periods, mandatory severance, and reinstatement remedies available in some jurisdictions. France, Germany, Spain, and many Gulf countries impose materially more employee-protective termination rules than UK law.

Note: international payroll and employment law is complex and changes frequently. Rules described in this guide reflect the general position as of mid-2026. Always take local legal and tax advice before engaging employees in any new jurisdiction.

How Global Investments Can Help

For businesses expanding internationally, understanding the local payroll, employment, and banking obligations for any employees based in a new market is an important early step.

Global Investments can connect you with specialist employment lawyers, payroll providers, and EOR services in markets around the world. We can also advise on multi-currency payment structures for international payroll. Contact us to discuss your expansion plans.