If you have researched doing business in Thailand as a foreigner, you will have encountered the Foreign Business Act. This guide explains the FBA clearly, covers when an FBL is required, how to apply for one, what the alternatives are, and what happens if you operate without the correct authorisation.
What the Foreign Business Act Is
The Foreign Business Act (FBA) of 1999 (B.E. 2542) is the primary legislation governing what business activities foreign-majority companies can conduct in Thailand. It creates a list-based system: certain activities are reserved for Thai nationals, others require special approval, and others require a Foreign Business License. Activities not on any of the FBA's lists are open to foreign-majority ownership without restriction. Understanding the FBA is fundamental to structuring a foreign-owned business in Thailand correctly.
The Three Lists
List 1: Absolutely prohibited to foreigners
These activities are reserved exclusively for Thai nationals. No licence, approval, or exemption changes this. List 1 includes: Thai print newspaper and TV/radio broadcasting, rice farming, animal husbandry, forestry and timber from natural forests, fishing in Thai territorial waters, extraction of Thai herbs, trading Thai antiques or national treasures, manufacturing Buddha images and monk bowls, and land trading. If your business falls in List 1, it is not accessible to a foreign-majority company under any circumstances.
List 2: Requires Cabinet approval
Foreign participation permitted but only with explicit Cabinet of Ministers approval. Covers sectors related to national security, environment, or cultural heritage. Includes: manufacturing firearms, domestic transportation, Thai antique trading under certain conditions. Cabinet approval is rare in practice and the process is lengthy. Very few individual foreign entrepreneurs operate in List 2 sectors.
List 3: Requires a Foreign Business License
Open to foreign participation but requires an FBL from the Department of Business Development. List 3 includes: accounting services, legal services, architectural and engineering services, construction, advertising, hotel businesses (excluding hotel management), guided tour businesses, retail and wholesale trading below specified capital thresholds, and "other service businesses." The "other service businesses" category is broad and has been interpreted to cover many general service activities. Foreign entrepreneurs whose business provides any service in Thailand should check carefully whether their activity falls within restricted categories.
What Counts as "Foreigner" Under the FBA
An individual is foreign if they are a non-Thai national, regardless of residence. A company is foreign if more than 49% of its shares are held by non-Thai nationals or foreign-incorporated entities. This applies to indirect ownership: if a foreign-majority company owns shares in a Thai company, that shareholding is treated as foreign. This is why the standard 49% foreign / 51% Thai structure keeps the company below the majority-foreign threshold, meaning FBA restrictions do not technically apply.
When You Need a Foreign Business License
You need an FBL when: (1) your company is foreign under the FBA definition (more than 49% foreign ownership), AND (2) your intended business activity falls within List 3. If your company has Thai shareholders holding 51% or more, the company is treated as Thai for FBA purposes and you do not need an FBL for List 3 activities. This is the primary reason for the 49/51 structure.
How to Apply
FBLs are issued by the Foreign Business Committee at the Department of Business Development (DBD) under the Ministry of Commerce. Required documents: application form (Bor.Khor.1), company registration documents, detailed description of business activities, business plan showing investment and economic benefit to Thailand, financial statements or projections, and shareholder/director identity documents.
Timeline: Statutory 60 days from a complete application. Including preparation, a realistic total timeline is 3-6 months. A qualified Thai lawyer preparing the application is not optional for a serious FBL application.
Alternatives to the FBL
Thai majority structure (51% Thai / 49% foreign)
The most common approach. The company is treated as Thai for FBA purposes, avoiding the need for an FBL for List 3 activities. Thai shareholders must be genuine under the January 2026 DBD rules, with bank statements and fund transfer evidence demonstrating real financial participation. Nominee shareholders remain illegal with serious consequences.
BOI promotion
A BOI-promoted company in a qualifying activity category receives an FBA exemption for its approved activities, allowing full foreign ownership without an FBL. Requires qualifying business type and 3-6 month application process. See the BOI guide.
Treaty of Amity (US citizens only)
US nationals can apply for Treaty of Amity certification, providing the right to own a majority or all of a Thai company in most sectors otherwise restricted by the FBA, without needing an FBL. See the Treaty of Amity guide.
What Happens Without a Licence
Operating a foreign-majority company in a List 3 sector without a valid FBL is an offence under the FBA. Penalties for individuals: fines up to 1 million THB and imprisonment up to three years. For companies: fines up to 1 million THB plus daily fines for ongoing violations. Authorities can order the company to cease the illegal activity.