European commercial engagement, in outline.

The one thing to understand first

Thailand restricts foreign participation in a long schedule of business activities under its foreign business legislation, and a company is treated as foreign by reference to its shareholding rather than by where its directors live or where its money came from. That schedule covers a great deal of the service economy, and it is the frame within which every structuring conversation happens. The practical consequence is that the answer to whether you can own a hundred per cent of a Thai company depends almost entirely on what that company is going to do, and any adviser who gives you a general answer before asking that question is not advising you.

Manufacturing and export-oriented activity are broadly the most open. Many services, retail and trading activities are restricted. Some sectors are closed outright. Between those poles sit exemption and promotion routes, and the whole art of establishing here as a European is identifying which route your actual business fits and building the entity to match, rather than incorporating first and discovering the restriction afterwards. We see the reverse order regularly and it is expensive to unwind.

The Treaty of Amity does not apply to you

This point deserves its own section because it causes more wasted effort among European clients than any other single misunderstanding. The Treaty of Amity and Economic Relations between Thailand and the United States permits United States nationals and United States majority-owned companies to hold majority or full ownership of Thai companies in most sectors, with certain exceptions, and to be treated broadly as Thai for those purposes. It is a bilateral treaty with the United States. It applies to American nationals and American companies only.

It does not apply to British, German, French, Italian, Dutch, Swiss, Nordic or any other European nationals or companies. There is no European equivalent. A European principal who reads about the Treaty of Amity in a Bangkok business article, or who is told by a promoter that a similar arrangement exists for Europeans, is being misled. The routes available to Europeans are different, they are perfectly workable, and they are the ones set out below. If an adviser suggests you can access Amity treatment through an American shareholder, a nominee or a layered holding structure, stop the conversation and take independent Thai legal advice, because the ways in which that can go wrong are serious.

The routes that do apply

The most substantial is promotion by the Board of Investment. The Board maintains a list of promoted activities, weighted towards manufacturing, technology, research and development, digital services, targeted industries and regional headquarters functions, and promotion can bring foreign ownership permission in activities where it would otherwise be restricted, alongside tax and non-tax incentives, land holding rights for the promoted activity and streamlined visa and work permit handling for foreign staff. Promotion is applied for, assessed and conditional, and it obliges you to actually do the promoted thing to the promised standard. For a serious European operation with real investment behind it, this is usually the right conversation to have first.

Beyond it: a foreign business licence, applied for where the activity is restricted but a licence may be granted, which is discretionary and slow; the industrial estate authority route for manufacturers locating within designated estates, with its own permissions; a Thai majority company where the activity permits it and the Thai shareholding is genuine and commercially real, which is a legitimate and widely used structure and is entirely different from a nominee arrangement; a representative office or branch of the European parent, which is limited in what it may do and specifically may not earn revenue in the case of a representative office; and, for those testing the market, a distribution or agency relationship with an established Thai partner, which defers the structuring question entirely.

Capital, work permits and the ratio nobody mentions

Two operational realities catch small European operations by surprise. The first is registered capital: minimum capital requirements apply to foreign-operated businesses and to the issue of work permits, and the capital must be genuinely paid in and evidenced, not merely stated on a document. The second is the employment ratio: work permits for foreign staff are linked to the employment of Thai nationals and to the company's registered capital, so a two-person European consultancy that intends to operate here with two foreign directors and no Thai staff will discover that the permits do not follow. Plan the Thai headcount as part of the structure rather than as an afterthought.

A work permit and a visa are separate instruments and both are required to work here lawfully. The visa gives you permission to be in the country; the work permit gives you permission to work, for a named employer, in a described role, at a stated place of work. Working on a tourist entry or a visa exemption is not lawful regardless of where the client or the payment sits, and the definition of work in Thai practice is broader than most Europeans assume. Digital and remote-working categories have been introduced in recent years and they have their own conditions; check the specific category rather than assuming that working online for a foreign employer sits outside the framework.

The chambers, and who to actually call

Thailand's European chambers of commerce are unusually useful and are the cheapest good advice available. The German-Thai, British, Franco-Thai, Italian-Thai, Netherlands-Thai, Nordic and Swiss-Thai chambers all maintain a presence in Bangkok, most have decades of institutional memory, and several coordinate through a joint European body. They run sector groups, they know which government relationships matter for which industries, and they can tell you which advisers their members have actually used successfully rather than which advisers advertise. For a principal at the exploratory stage, a month of chamber meetings is worth more than a month of desk research.

Alongside them, your own embassy's commercial section, the Board of Investment's own advisory service, which is free and substantive, and a Thai corporate law firm instructed by you rather than introduced by the counterparty. On accounting and tax, engage a Thai firm early, because Thai statutory accounting, audit and filing obligations are real, the deadlines are fixed, and a company that has been filing casually for two years is a problem to fix rather than an inconvenience.

Where our guides take over

This article is deliberately an outline for a European reader and nothing more. Asia Global Partners publishes a full business series covering company formation and the practical mechanics of registration, Board of Investment promotion in detail, foreign business licensing, work permits and the visa categories that accompany them, employment and Thai labour obligations, and the corporate banking relationship, which is frequently the slowest part of the whole exercise for a foreign-owned entity. Those guides go where this one stops.

What belongs here is only the European framing: the Treaty of Amity is not yours, the schedule of restricted activities is the frame for everything, the Board of Investment is usually the first serious conversation, capital and Thai headcount are structural rather than incidental, and independent Thai legal and accounting advice is not optional. Nothing in this article is legal, tax or investment advice, and no part of it should be relied on in place of a qualified adviser instructed by you and acting for you.

Foreign business rules, capital thresholds, promoted activity lists and work permit ratios change and are applied with discretion. Verify the current position with the Board of Investment, the Department of Business Development at the Ministry of Commerce, and the Ministry of Labour, and take advice from a Thai corporate lawyer and a Thai accountant instructed directly by you.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.