A recent update to the Organisation for Economic Co-operation and Development’s tax commentary is drawing attention in Thailand as businesses and professionals reassess how remote work arrangements could affect their tax obligations.

The revisions relate to interpretations of the OECD Model Tax Convention, a widely used framework that guides how countries allocate taxing rights when individuals or businesses operate across borders.

Although the commentary itself does not change domestic law, it influences how tax authorities interpret existing treaties and international tax principles.

For Thailand, the growing prevalence of remote work has introduced new questions about where income should be taxed when employees perform duties in one jurisdiction while working for companies based in another.

The OECD’s updated guidance offers additional clarification on issues such as permanent establishment risks, employer obligations and the taxation of cross-border employment income.

One area of particular focus involves the concept of a “permanent establishment,” which determines whether a company has sufficient presence in a foreign country to become subject to local corporate tax.

Under certain circumstances, if employees regularly perform work from Thailand for a foreign employer, authorities could determine that the employer has established a taxable presence in the country.

The updated commentary suggests that occasional or temporary remote work generally does not create such a presence.

However, more permanent arrangements—particularly when employees carry out core business activities from another jurisdiction—could trigger additional tax considerations.

The guidance also addresses how employment income should be taxed when workers spend time in multiple jurisdictions.

Under many tax treaties, income earned by an employee is typically taxed in the country where the work is physically performed, although exceptions can apply depending on the length of stay and the structure of the employment relationship.

For Thailand, which has increasingly attracted foreign professionals through long-term visas and remote-work programs, the interpretation of these rules may become more significant.

Multinational companies employing staff who live and work in Thailand while serving overseas operations may need to review their tax compliance strategies.

Legal and tax specialists say the updated commentary underscores the importance of documenting employment arrangements clearly, including where duties are performed and which entity exercises control over the work.

They note that while the OECD commentary does not automatically change Thailand’s domestic tax regulations, it can influence how authorities interpret bilateral tax treaties and assess cross-border employment situations.

As remote work continues to expand globally, experts expect further discussions between governments, businesses and international organizations about how to adapt tax frameworks to modern working patterns while ensuring clarity and fairness in cross-border taxation.