New Guidance for Employers on Short-term Business Visitors in the UK
 

HM Revenue & Customs (HMRC) has published new compliance guidance for employers on Short-Term Business Visitors (STBVs), titled Guidelines for Compliance (GfC19). The publication consolidates HMRC's regulatory expectations regarding Pay As Your Earn (PAYE), National Insurance contributions (NICs) treatment of overseas employees who visit the UK temporarily for work.

While the guidance introduces no change in statutory law or policy, it provides HMRC's most comprehensive statement of good practice for operational governance for managing cross-border STBV compliance.

Key Area Covered in HMRC Guidance (GfC19)

• EP Appendix 4 and EP Appendix 8 Arrangements: Detailed criteria for EP Appendix 4 (applicable to employees resident in countries with a UK Double Taxation Agreement/DTA) and EP Appendix 8 arrangements (for employees who do not qualify for Appendix 4). The guidance offers practical examples to help employers determine eligibility and resolves common misapplications.
• UK Day-Counting Rules & The 60-Day Rule: Clarification on how UK workdays and presence days are counted for treaty purposes, alongside strict operational criteria for relying on the 60-day rule.
• The Economic Employer Test: Guidance and practical scenarios illustrating when a UK entity is deemed an "economic employer", particularly regarding management control, risk, and cross-border cost recharges.
• Double Taxation Treaties: Guidance on reviewing individual tax treaties carefully, noting that the applicability of treaty provisions may depend on conditions beyond the standard 183-day presence test.
• National Insurance Contributions (NICs): Rules on assessing NIC liabilities separately from PAYE, based on bilateral social security agreements or UK domestic legislation where reciprocal agreements do not exist.
• Common PAYE and NIC Errors: A breakdown of frequent misunderstandings regarding PAYE withholding, double tax treaties, and social security for inbound mobile workers, including HMRC's register of commonly identified audit errors.
• Record Keeping & Audit Trail Expectation: HMRC's explicit documentation standards, requiring retained evidence of UK workdays, travel logs, remuneration allocations, bonuses, expense reimbursements, share awards, and formal NIC determinations.

What Should Employers Do Now?

Employers with internationally mobile workforces should review their internal STBV processes to confirm that:

• Visitor Tracking Systems: Effective, centralized tracking arrangements are in place to monitor overseas employee travel and UK workdays in real time.
• Treaty Relief Claims: Claims under double tax treaties are backed by documented technical analysis and verified tax residency certificates.
• Economic Employer Assessments: Formal assessments are documented, especially where employment costs or management fees are recharged to UK entities.
• Decoupled NIC Reviews: National Insurance reviews are conducted independently from PAYE and double tax treaty assessments.
• Audit-Ready Records: Complete records, travel evidence, and certificates of coverage are retained to substantiate positions taken under review.