2BOI Promoted Company

BOI-promoted companies are the gold standard for investors seeking full ownership and maximum incentives. The Board of Investment promotes specific sectors — technology, digital services, advanced manufacturing, healthcare, clean energy, EEC industries and more. Approved companies can be 100% foreign-owned and receive corporate income tax exemptions of up to 13 years, import-duty exemptions, and streamlined visa and work-permit processing. Approval typically takes 6–12 months.

Key sectors: EV manufacturing, digital economy, medical devices, smart electronics, data centres, aerospace, biotechnology and advanced agriculture.

3Foreign Business Licence (FBL)

For List 3 activities not covered by BOI or a treaty, investors can apply for a Foreign Business Licence from the DBD. In theory it grants 100% foreign ownership; in practice, approval rates are low for small ventures. The DBD assesses each application on economic necessity, knowledge transfer and Thai employment. The process is document-heavy and takes 6–12 months; some categories require ฿100M paid-up capital. Where eligible, BOI is usually preferred.

4US–Thailand Treaty of Amity (1966)

The Treaty of Amity and Economic Relations (1966) grants US citizens and US-majority-owned companies national treatment in Thailand — letting them operate most businesses on the same basis as Thai nationals, bypassing the FBA entirely. A Foreign Business Certificate (not an FBL) is obtained from the DBD. It's one of the most powerful structures available — but limited to US nationals, or companies where US nationals own 50%+ of shares.

5Bilateral Treaties — TAFTA (Australia) & JTEPA (Japan)

Thailand's trade agreements with Australia and Japan grant their nationals preferential ownership beyond standard FBA limits. Under TAFTA, Australian investors can hold 60–100% equity across 18 designated service sectors. Under JTEPA, Japanese investors are permitted 50–100% ownership across 15 recognised service sectors. Eligibility must be verified carefully — not every activity qualifies.

6Representative Office (RO)

A Representative Office lets a foreign company establish a non-commercial presence without revenue-generating activity — ideal for exploring the market, research or procurement before launching. As of 2026 an RO needs no FBL, but it cannot sell, sign contracts or earn income in Thailand. Minimum remitted capital is ฿3M; it is fully funded by the parent and pays no corporate income tax (though it must keep proper accounts).

7Branch Office

A Branch Office lets a foreign company conduct revenue-generating activity while remaining an extension of the foreign parent — not a separate legal entity. Unlike an RO, it can sign contracts and earn income, but it requires an FBL and minimum remitted capital of ฿3M. The parent company bears unlimited liability for the branch's obligations, which is why most investors prefer a Thai limited company for liability protection.

≡Quick comparison — all 7 structures

• Thai JV (49/51): 49% foreign · fast · earns income · low complexity.

• BOI Company: 100% foreign · moderate speed · earns income · medium complexity.

• FBL Company: 100% foreign · slow · earns income · high complexity.

• Treaty of Amity (US): 100% foreign · fast–moderate · earns income · low–medium complexity.

• TAFTA / JTEPA (AUS / JP): 60–100% foreign · moderate · earns income · medium complexity.

• Representative Office: 100% foreign · fast · no income · low complexity.

• Branch Office: 100% foreign · slow · earns income · high complexity.

→How to choose — a decision framework

• 1. Check your sector against the FBA lists. List 1 (prohibited), List 2 (Cabinet approval), List 3 (FBL needed) or outside all lists (open)? This is the starting point.

• 2. Check your nationality for treaty eligibility. US national → Treaty of Amity is likely best. Australian → check TAFTA. Japanese → check JTEPA. Others → BOI or Thai JV.

• 3. Does your business qualify for BOI? If it's on the promoted-activities list, BOI is usually optimal — 100% ownership plus tax incentives. Apply before forming the company.

• 4. If none of the above — consider a Thai JV. A genuine 49/51 with a trustworthy partner is the fastest practical route; invest in a well-drafted shareholder agreement with veto and dispute-resolution clauses.

• 5. Engage a qualified Thai corporate lawyer — not a formation agent — before committing. The DBD's 2026 documentation rules make proper legal advice more important than ever.

⚠Nominee shareholders — the most dangerous shortcut

✦Summary

Thailand offers a wider range of legal structures for foreign ownership than many investors realise — from a straightforward Thai JV to full BOI-promoted 100% ownership. The key is matching the right structure to your sector, nationality, scale and risk tolerance. The 2026 FBA reforms and DBD digitisation have made the legitimate pathways clearer and more accessible, while making illegitimate shortcuts far more dangerous.

Every structure works legally when implemented correctly. The ones that fail are built on nominee arrangements, undisclosed control mechanisms, or poorly documented Thai shareholder contributions. In 2026 the cost of getting it wrong is higher than ever — and the cost of getting it right is simply the price of good legal advice.