The Foreign Business Act, properly explained.

Why owners misunderstand the Act

The Foreign Business Act B.E. 2542 is usually summarised in a single sentence at a dinner table: foreigners cannot own more than forty nine percent of a Thai company. That sentence is wrong in three directions at once. It is wrong because the restriction attaches to activities rather than to companies in general. It is wrong because a majority foreign holding is perfectly lawful in a great many businesses. And it is wrong because, where an activity is restricted, satisfying the shareholding percentage on paper does not by itself put a company outside the Act.

The consequences of the misunderstanding are predictable. Owners who did not need a Thai majority took one anyway, and inherited a nominee problem they never had any commercial reason to create. Owners who did need one arranged it artificially, believing the percentage was the whole of the law. Reading the Act properly, in outline, is the cheapest hour a foreign owner can spend.

What counts as a foreigner

The Act defines a foreigner more broadly than most owners assume. It covers a natural person who is not of Thai nationality, and a juristic person that is not registered in Thailand. It also covers a juristic person that is registered in Thailand where half or more of its shares are held by persons falling in either of those first two categories. Partnerships whose managing partner or manager is a foreigner are treated the same way.

Two practical points follow. First, the test looks through corporate layers: a Thai registered company whose shares are held by an offshore holding company is measured by reference to that holding company's status, so stacking entities does not resolve the question. Second, the threshold is half or more, which is why the familiar forty nine and fifty one split exists at all. A company that is fifty percent foreign owned is a foreigner for these purposes.

The three lists, in general terms

Where a business is a foreigner within that definition, the Act then asks what it wants to do. Activities are grouped into three annexed lists, each with a different consequence.

The third list is where most private clients find themselves, because it captures a wide range of ordinary service activities. It is also the only one of the three with a realistic permission route. Certain treaty and promotion regimes sit alongside the lists rather than inside them: a company promoted by the Board of Investment, or registered under the Treaty of Amity, may operate with majority or full foreign ownership in activities that would otherwise require a licence, subject to the terms of the promotion or the treaty.

Classification is not obvious from a business plan. Two companies describing themselves in the same words can fall on different sides of a list depending on what they actually do, who they contract with, and where value is created. This is one of the points at which reading a website is not a substitute for an opinion from Thai counsel on your specific facts.

Why the shareholding test is not the whole test

Suppose the activity is restricted and the register shows fifty one percent Thai ownership. The company is not a foreigner on the face of the Act. That is where many owners stopped reading, and it is where Section 36 begins. Section 36 makes it an offence for a Thai national or Thai entity to hold shares on behalf of a foreigner so as to enable that foreigner to operate a restricted business, and it makes it an offence for the foreigner to allow or participate in that arrangement.

In other words, the Act contains both a formal test and an anti avoidance provision, and the second exists precisely because the first can be satisfied artificially. The penalty under Section 36 is imprisonment not exceeding three years, a fine of 100,000 to 1,000,000 baht, or both, and it applies to the Thai shareholder as well as to the foreign principal. Related consequences reported in practice include false statement offences under the Penal Code where declarations to the registrar did not reflect the facts, dissolution of the company by court order, and compulsory disposal of land held through such an arrangement.

The practical importance of this in 2026 is that the formal test and the substantive test are now examined together. From 1 January 2026 the Department of Business Development has required proof of source of funds on incorporation, with registrars verifying that each Thai shareholder has genuine financial capacity for the capital declared. From 1 April 2026 those checks were reported to extend to amendment filings, which brings existing companies into view through ordinary housekeeping. Both should be treated as the reported position at the date of this article and confirmed with the Department before you file.

Capital, licences and the practical thresholds

The Act carries minimum capital requirements for foreign operators, and higher minimums where a licence is required for a listed activity. Separately, and often confused with them, the work permit regime imposes its own thresholds: registered capital in the order of two million baht for each foreign work permit, and a ratio commonly applied at four Thai employees for each foreign employee, with relief available to companies promoted by the Board of Investment. The two regimes are distinct, they are administered by different authorities, and satisfying one says nothing about the other.

A Foreign Business Licence application for a third list activity is a substantive process, not a registration. It is considered by the Foreign Business Committee and granted at official discretion, with weight given to the benefit to the Thai economy, technology or knowledge transfer, and the effect on Thai competitors. Applications take months rather than weeks and are not granted merely because the applicant would find compliance inconvenient otherwise.

Where the Act meets land and property

A separate statute governs land, and it is important not to blur them. Under the Land Code, foreigners generally may not own land. Section 96 bis is the only route to direct individual foreign land ownership and requires a substantial qualifying investment, commonly described as forty million baht, together with residential use and ministerial approval. It is restrictive enough that in practice it is rarely a usable option, and it should be described that way rather than offered as a solution.

The lawful routes that actually work for private clients are different. A foreigner may hold a condominium unit in freehold within the building's forty nine percent foreign quota, provided the purchase funds are remitted from abroad in foreign currency and evidenced by the bank through the foreign exchange transaction record. Beyond that there are registered leases, subject to a statutory maximum of thirty years per registered term, together with usufruct, superficies and the right of habitation. Promises of a thirty year lease renewed twice are weaker than buyers are usually told, because only the current registered term has certain effect. A company formed for the sole purpose of holding a home for a foreign owner is not a property solution; it is the Foreign Business Act problem in a different suit of clothes.

Where professional advice is essential

There are four points at which general reading stops being useful. The first is classification: whether your actual activity falls within a list, and which one. The second is the assessment of an existing structure, where the analysis depends on documents and money flows rather than on descriptions. The third is choosing between the compliant routes, because the right answer depends on the activity, the capital, the nationality of the owners and the timescale. The fourth is any situation where an owner believes they may already be exposed, in which case the only sound guidance is to instruct qualified Thai counsel immediately and to be complete with them, including about the documents that are uncomfortable to hand over.

Asia Global Partners is a private office rather than a law firm and gives no legal or tax advice. Its role is to convene the right Thai counsel and accountants, coordinate them, and stay accountable for the process from the first review to the outcome. Owners whose home country also taxes or reports on foreign holdings should bring their advisers at home into the same conversation, because the two sets of obligations interact and neither adviser can see the whole picture alone.

This article is general information about the Foreign Business Act and related Thai law as at August 2026. It is not legal advice and does not address your own facts. Asia Global Partners is a private office, not a law firm. Instruct qualified Thai counsel independently before acting, verify current licensing and filing requirements with the Department of Business Development, verify land questions with the Land Department, and verify promotion questions with the Board of Investment.

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.