Shadow Payroll Services in the UK

Keeping your internationally mobile employees compliant in the UK

When employees are sent on assignment to the UK, they may continue to be paid from the home-country payroll system. However, UK law still requires employers to calculate, withhold, and report tax through the PAYE (Pay As You Earn) system.

This is where a shadow payroll comes in. It allows employers to meet UK tax and social security obligations while the employee continues to be paid through the home-country payroll.

What is a Shadow Payroll?

A shadow payroll is a second payroll run in the host country, in this case the UK, with the sole purpose of ensuring compliance with local tax and reporting requirements.

  • It operates in parallel to the home-country payroll, which remains responsible for paying the employee.
  • The shadow payroll reports the portion of salary and benefits attributable to UK workdays.
  • No additional salary is paid to the employee — the shadow payroll is purely a compliance mechanism.

 

Employing internationally mobile staff often creates situations where tax and/or social security withholding is required in a country where you do not have your usual payroll. A UK shadow payroll bridges this gap, ensuring HMRC receives the correct PAYE and National Insurance deductions.

Shadow Payroll in a Nutshell

  • Purpose: to calculate and pay over the appropriate UK tax and NIC withholdings.
  • Operation: run alongside the home payroll, but netted to zero for payment purposes.
  • Scope: covers income and benefits related to UK duties, even if the employee remains on home payroll.

 

We can advise on how to establish and run a UK shadow payroll, and we work with your payroll teams to ensure the necessary transfer of salary and benefits data between home and host locations. This ensures accurate shadow payroll calculations and compliant submissions.

When is a Shadow Payroll Required?

A UK shadow payroll is typically required when:

  • Trailing payments such as bonuses or equity awards relate to UK duties.
  • Employees are on assignment in the UK but remain on home-country payroll.
  • UK PAYE and NIC liabilities arise due to UK workdays.
  • Frequent business travellers or cross-border commuters trigger UK withholding obligations.

Shadow Payroll and UK Tax Returns

In addition to shadow payroll reporting, most assignees will also need to file a UK Self Assessment income tax return. This reconciles their UK tax position and applies treaty reliefs where relevant. Employers usually arrange this on behalf of assignees as part of the global mobility support package.

At Türner & Co, we provide a complete service package:

  • Shadow payroll compliance and reporting.
  • UK tax return preparation for assignees.

 
Read more on our Inbound Employees Working Temporarily in the UK page.

Our UK Shadow Payroll Services

  • Set-up and registration with HMRC.
  • Ongoing monthly shadow payroll processing under PAYE.
  • Application of treaty reliefs and NIC rules.
  • Management of trailing payments (bonuses, allowances, equity).
  • Year-end compliance – P60s, P11Ds, PSA submissions.
  • Integration with tax equalisation policies.
  • Support for data transfer between home and host payroll teams.
  • Tax return services for assignees, completing the compliance cycle.

Why Shadow Payroll Matters

Operating a shadow payroll is a legal requirement in the UK. Without one, employers risk:

  • HMRC penalties and interest.
  • Double taxation for employees.
  • Social security compliance failures.
  • Employee dissatisfaction and reputational issues.

 
By outsourcing your UK shadow payroll to us, you gain peace of mind that your reporting is accurate, compliant, and aligned with your global mobility policies.

FAQs

Contact Our Experts

Sarah English

Senior Manager

Sarah is our Head of Direct Taxes and advises on both corporate and personal tax matters, including capital gains tax. She specialises in international tax, helping clients determine whether the UK has taxing rights — and if so, to what extent. Whether it’s assessing if a company or individual is UK tax resident under domestic law, or applying double tax treaties to resolve dual residency questions, Sarah guides clients through complex cross-border issues with clarity.

Sarah also advises overseas businesses on whether they have a UK permanent establishment for corporation tax purposes and supports individuals with a wide range of UK income tax matters — from non-resident landlords to those newly tax resident in the UK — helping them stay compliant and pay the right amount of tax.

Jack Waller-Smith

Jack is an Assistant Manager in our payroll team and plays a key role in the day-to-day running of our monthly payrolls. He works closely with clients to gather all the information needed each month and makes sure salary calculations are accurate, and payslips are delivered on time. He also prepares and submits monthly reports to HMRC and ensures pension contributions are reported to the relevant pension scheme on time. By helping clients stay compliant with the UK’s workplace pension rules and payroll reporting requirements, Jack ensures everything runs smoothly and employees are paid accurately and on schedule.