In-house Expatriate & Employment Tax Assistant

Are you looking to build a career in tax within a dynamic, global environment?

Then look no further than this exciting opportunity to this highly regarded international mobility and employment tax team.

The role is based in London and requires 50% of your time to be spent in the office.

This is a great opportunity to gain hands-on experience supporting employees working across borders, advising on international assignments, remote working arrangements and UK employment tax matters.

You’ll work alongside experienced specialists, develop valuable technical expertise and play a key role in delivering a seamless experience for internationally mobile employees.

What you’ll be doing

• Supporting the delivery of employment tax and expatriate tax compliance services for internationally mobile employees.
• Acting as a day-to-day contact for UK tax compliance queries, helping employees understand tax returns, PAYE coding notices and payroll-related matters.
• Monitoring and managing assignment processes, ensuring information requests and documentation are received and processed efficiently.
• Attending employee tax briefings and coordinating follow‑up actions, including managing HMRC-related submissions.
• Maintaining global tax payment and refund schedules, ensuring accurate and up‑to‑date records.
• Assisting with assignment cost projections and researching tax implications across multiple jurisdictions.
• Reviewing cross‑border remote working requests, identifying potential employment tax risks and compliance requirements.
• Collaborating with HR, payroll, finance and external advisers to deliver an efficient and professional service.
• Supporting UK payroll and employment tax compliance activities, developing practical knowledge of HMRC processes and regulations.
• Leveraging technology and AI tools, including Microsoft Copilot, to enhance reporting, document preparation and process efficiency.
• Helping manage Short‑Term Business Visitor reporting requirements, including employee communications, information gathering and HMRC submissions.

To succeed, you’ll ideally have

• Previous experience in a UK expatriate tax experience gained in a professional services environment.
• Strong communication and relationship‑building skills.
• Excellent organisational skills and the ability to manage multiple priorities.
• A high level of accuracy and attention to detail.
• Confidence using Microsoft Office applications, particularly Excel.
• A professional, collaborative and client‑focused approach.

Individuals who are part‑way through their exams will be supported to complete these.

In return, you’ll benefit from

• Exposure to complex international tax and mobility matters.
• Structured training and ongoing professional development.
• Opportunities to work with colleagues and stakeholders across multiple countries.
• A collaborative, inclusive and high‑performing culture.
• Flexible working arrangements designed to support work‑life balance.
• Access to innovative technology and AI tools that enhance the way we work.
• Long‑term career progression within a globally respected organisation.

Please note our advertisements use PQE/salary levels purely as a guide.

However, we are happy to consider applications from all candidates who are able to demonstrate the skills necessary to fulfil the role.

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