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Permanent Establishment and Company Residence in Thailand

A company’s place of incorporation is important but not the entire cross-border tax analysis. A UK company directed or operated from Thailand may need advice on residence, treaty status, permanent establishment and the attribution of profit to Thai activity.

Updated 4 September 2026 General information

Company residence and permanent establishment differ

ConceptQuestionPossible consequence
UK incorporationWas the company incorporated in the UK?Normally places the company within UK residence rules, subject to treaty provisions.
Central management and controlWhere are the highest-level decisions actually made?Can affect residence analysis under UK case law and treaty interaction.
Thai permanent establishmentDoes the enterprise have a sufficient fixed place, agent or business activity in Thailand?Thailand may tax profit attributable to that presence.
Thai domestic taxable activityDoes Thai law impose registration or tax even without treaty PE?Domestic filing may arise, with the treaty considered as a limitation where available.
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Central management and control

HMRC guidance looks to where the company’s real business is carried on at the highest level. Formal board location is evidence, but it is not decisive if directors elsewhere merely approve decisions already made by a controlling person in Thailand.

Map who decides strategy, major contracts, borrowing, budgets, appointments and distributions. Governance changes should be real, commercially workable and consistently followed.

Permanent-establishment indicators

Treaty analysis can include a fixed place through which business is carried on and circumstances in which a person habitually exercises authority connected with contracts. The exact convention wording, as modified, must be applied to the facts.

A home office is not automatically a permanent establishment, but regular company use, permanence, customer meetings, staff and the business’s requirement that the location be available can increase risk.

Repeated services and sector-specific rules also need review.

  • Dedicated Thai premises
  • Local employees or dependent representatives
  • Habitual negotiation or conclusion of contracts
  • Inventory or operational equipment
  • Regular customer delivery in Thailand
  • Management functions exercised from Thailand

Profit attribution and compliance

If a permanent establishment exists, the issue is not necessarily taxation of every company profit in Thailand. An appropriate amount may need to be attributed to the functions, assets and risks connected with the Thai presence.

This requires accounting records and a functional analysis. Corporation Tax already paid in the UK does not remove the need to register or file in Thailand, although treaty and domestic credit relief may affect double taxation.

Practical risk controls

Do not manufacture minutes or restrict a director on paper while allowing the same person to run everything in practice. Tax authorities can examine correspondence, approvals, banking access, negotiations and operational conduct.

Review the position before taking Thai premises, giving local signing authority, employing staff or shifting material management functions. Those events can change the analysis even when the legal entities remain unchanged.

Frequently asked questions

Does working from my Thai home create a permanent establishment?

Not automatically, but it can contribute to one depending on permanence, the company’s use of the location, the activities performed, contract authority and the treaty. Review the complete facts.

Can board meetings in the UK prevent Thai tax?

Meeting location is relevant evidence but not conclusive. The record must reflect where real strategic decisions are made and who has effective authority throughout the year.

Would Thailand tax all of the UK company’s profits?

A permanent-establishment analysis normally includes attributing profit to the relevant presence, while a company-residence conclusion can be broader. The result depends on domestic law, treaty status and the company’s functions and risks.