The most common misunderstanding we meet on Samui is not about tax or ownership. It is about the Hotel Act.

Under the Hotel Act B.E. 2547 (2004), accommodation let for periods shorter than 30 days is, as a general rule, a hotel business and requires a licence. That applies whether the property is a condominium unit, a townhouse or a six-bedroom sea-view villa, and whether it is booked through a platform or directly. A rental agreement calling itself a "monthly lease" does not change what actually happened if guests stay four nights.

Why owners get caught out

Three assumptions do most of the damage.

"The platform handles it." Booking platforms are marketplaces, not licensing authorities. Compliance sits with the owner and the operator.

"Everyone here does it." Widespread practice is not a defence, and enforcement is not uniform over time. Periods of tolerance are followed by periods of inspection, usually after a complaint from neighbours, a competing operator or a juristic person.

"We rent through a company, so it is fine." This is the assumption currently under most pressure. Through 2026, Thai authorities have run repeated operations against nominee structures in tourist provinces. In August 2026, officials reported around 60 suspected illegal nominee companies on Koh Samui in one operation — the seventh in a series — and the Interior Ministry has ordered wider scrutiny in Surat Thani covering land holdings, hotels, businesses and foreign workers.

The legitimate routes

There are workable structures, and they are not exotic:

  • Obtain a hotel licence. Feasible for purpose-built properties that meet building, safety and zoning requirements. Small properties may fall under the lighter non-hotel accommodation regime, subject to conditions.
  • Let for 30 days or more. Longer minimum stays fall outside the Hotel Act's short-stay rule. This changes the yield model, not the legality.
  • Operate under a licensed operator. Placing a villa into a licensed hotel or serviced-residence operation transfers the regulatory burden to a party equipped to carry it.

What we would check on any property

Licence status and expiry. Building permit and actual use. Zoning. Fire and safety compliance. The ownership structure and whether it can withstand a nominee review. Who is contractually responsible if the property is ordered to stop trading.

None of this is a reason not to invest on Samui. It is a reason to underwrite the compliance position before, not after, the first booking.

This is general information, not legal advice. Structures should be reviewed with a licensed Thai lawyer.

Sources: Hotel Act B.E. 2547; Bangkok Post reporting on Koh Samui nominee operations, August 2026; Khaosod English on Interior Ministry directives in Surat Thani, August 2026.