Employer Compliance For International Secondments

Stay Compliant When Moving Talent Across Borders

Whether you're a UK employer seconding employees overseas or an overseas employer posting staff to the UK, GTC ensure compliance across tax and payroll with HMRC.

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Please complete and submit the form to receive an estimated fee quotation for employer tax services.

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TAX SERVICES

EMPLOYER COMPLIANCE

Whether you're a UK employer seconding staff overseas or a global company assigning employees to the UK, international secondments come with complex tax, payroll, and legal responsibilities. 



At Global Tax Consulting, we specialise in supporting globally mobile workforces — helping you avoid penalties, reduce tax risks, and stay fully compliant in every jurisdiction.

UK Payroll Services
Shadow Payroll Services
Social Security
Business Visitor Reporting
Assignment Policies
Benefits Reporting
PAYE Compliance

We ensure secondees working in the UK are correctly taxed under PAYE rules, including Modified PAYE (Appendix 6) arrangements for tax-equalised employees, keeping payroll accurate and HMRC-compliant.

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Appendix 6 Compliance

Our shadow payroll solutions meet UK tax reporting obligations without changing home-country payroll, ensuring accurate withholding, reporting, and compliance for inbound secondees on international assignments.

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A1 & CoC Certificates

We help employers secure A1 certificates or equivalent CoC coverage, avoiding dual social security contributions while ensuring secondees maintain home-country benefits throughout their international posting.

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Short Term Business Visitor Reporting

We manage Appendix 4 compliance for business visitors to the UK, ensuring accurate day tracking, reporting, and minimising exposure to unexpected tax liabilities or penalties.

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Tax Equalisation

We design fair, transparent tax-equalisation and assignment policies that maintain financial neutrality for secondees, supporting consistent treatment across jurisdictions and reducing employee concerns over tax costs.

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P11Ds & PSAs

We handle annual P11D and PAYE Settlement Agreement submissions, ensuring all taxable benefits — from housing to relocation costs — are correctly reported to HMRC.

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KEY POINTS

CROSS BORDER ASSIGNMENTS

Our expert tax planning can help you reduce or legally eliminate UK tax exposure using a variety of advanced strategies, including:

Tax Equalisation

Make your employee tax-neutral by having them pay only what they would owe at home — no more, no less.
Tax Protection
Let your employee keep the upside if the host country has lower tax — while protecting them from paying more than at home.
Secure Social Security Coverage Early

Coordinate early to apply for social security exemption documents in the host country to ensure the employee is liable to home country social security only.
Operate Payroll & Withholding Correctly
Even if employees remain on a home payroll, local tax laws may require host country payroll reporting — known as shadow payroll or split payroll.
WHY GTC

UK CROSS BORDER SPECIALISTS

We are a team of experienced and qualified tax advisors committed to helping individuals navigate the complexities of the UK tax system.

International tax experts

We specialise in cross-border UK tax advice, serving expats, nomads, and mobile professionals in 50+ countries.

Highly rated

100+ 5* reviews across Google and Trust Pilot. GTC is trusted by individuals worldwide to deliver reliable UK tax support.

Transparent fee structure

We fix fees before commencing work — you’ll always know what you’re paying for and payment is due upon delivery of services.

User friendly portal

Our online portal makes managing your UK tax affairs easy— securely upload documents, sign forms and message your tax advisor.

THE REAL STORY
trusted by clients worldwide
We help ensure your UK tax affairs are compliant and optimized no matter where you are in the world.
FAQS

EMPLOYER COMPLIANCE

What is a secondment for UK tax purposes?
Do I need to operate PAYE for a foreign employee working in the UK?
What is an A1 certificate and why do I need one?
What is shadow payroll?
How long can an employee be seconded before UK tax or social security applies?
WORK WITH GTC

GET SECONDMENT READY

Whether you're a UK employer seconding staff abroad or a foreign employer assigning staff to the UK, we provide full-service compliance — from PAYE and shadow payroll to A1s, and secondment structuring.
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