BOI Thailand 2026: 100% Foreign Ownership and Up to 8 Years Tax Free

An investor from abroad brought a rehabilitation center project to Phuket worth roughly 40 million THB. He registered the company before even arriving in Thailand, with Thai partners in the shareholder structure and the business activity listed broadly as 'provision of other services.' When it came time to file with the BOI, it turned out that no category on the current list matched that wording, and restructuring the company cost more than starting from scratch would have.

This is not an isolated case. The BOI (Board of Investment) gives foreign investors something an ordinary Thai company cannot: 100% foreign ownership, corporate income tax exemption for 3 to 8 years depending on the project category, exemption from import duties on machinery, and the right for the company to own land tied to the promoted project.

The entry threshold is lower than most assume. Minimum investment for most categories is 1 million THB, excluding land value and working capital. But not every business qualifies: the activity must appear on the approved list, and the debt-to-equity ratio cannot exceed 3:1.

In January 2026, the BOI announced an updated incentive package: additional benefits for expanding existing projects, for relocating production while simultaneously establishing an International Business Center, and for adopting advanced technology, particularly in automotive and EV manufacturing. The same announcement introduced Thailand FastPass, an accelerated approval mechanism currently aimed at large-scale projects.

Worth noting for global buyers: as of 17 June 2026, Thailand's Land Department and Department of Business Development began cross-checking beneficial ownership and actual business activity of companies holding land, tightening scrutiny on nominee structures used by foreign buyers.

Quick Answer

• 100% foreign ownership with no Thai nominee shareholders, plus a Foreign Business Certificate.

• Corporate tax exemption from 3 to 8 years: Group A4 gets 3 years, A3 gets 5 years, A1 and A2 get 8 years; for A2 the exemption is capped at 100% of investment value, for A1 there is no cap.

• Up to 3 additional years of merit-based incentives (R&D spend, staff training, local suppliers), capped at 13 years total.

• Zero import duty on machinery and equipment, and on raw materials for export-oriented manufacturing.

• Right to own land for the promoted activity under Section 27 of the Investment Promotion Act. If the promotion is revoked, the land must be sold within one year.

• Minimum 1 million THB investment excluding land and working capital, with debt-to-equity no higher than 3:1.

Key Facts

• Applications are submitted online via the e-Investment Promotion system, with a BOI interview typically scheduled within 10 working days of filing.

• Review timelines depend on project size: projects up to 200 million THB (excluding land and working capital) take 40 working days, 200 to 2,000 million THB take 60 working days at subcommittee level, and above 2,000 million THB take 90 working days with Board-level approval.

• Once approved, investors have 1 month to accept the promotion and 6 months to register the company and submit documents for the certificate.

• The project must launch and report full operational status within 36 months of certificate issuance.

• Priority sectors for 2026 include electric vehicles and components, advanced electronics and medical devices, biotech and pharmaceutical manufacturing, medical and wellness tourism, sustainable and eco-tourism, high-tech food processing, digital services and data centers, and renewable energy and efficiency.

• Visas and work permits for foreign staff at promoted companies are handled through the One Start One Stop Investment Center in Bangkok (Chamchuri Square), bypassing the standard queue at the Department of Employment.

• Most manufacturing categories require a minimum value-added of 20% of revenue; electronics, agricultural processing, and select categories have a lower threshold.

What the BOI Does Not Cover

Some expectations need correcting here. Buying a condo for rental income, flipping units, or running short-term villa rentals is not BOI territory. Residential development is not on the list of promoted activities, and no clever structuring changes that.

Hotels are technically listed, but with a high investment threshold and strict requirements on property category and location. A 12-room boutique hotel is unlikely to qualify. The exact subcategory and current threshold should be checked against the active BOI list, which is periodically revised.

The second disappointment concerns the headline benefit. The tax exemption is only worth as much profit as you actually generate during the exempt period. A project that turns profitable in year five will only use, at best, a third of an eight-year window. Meanwhile, promoted company status carries annual costs: audits, compliance reporting, and monitoring of the declared parameters.

Our view: if your project is under 10 million THB and falls outside the priority sectors, BOI probably isn't the right tool. A properly structured Thai company with genuine partners, or a separate license, will often solve the problem faster and cheaper. The exception is when your business genuinely needs to own land or hire a significant number of foreign specialists, in which case BOI can be worthwhile even on a modest budget.

How to Start: Step by Step

1. Find your exact category on the BOI list. Don't describe your business in your own words. Match it to a precise subcategory (A1-A4 or B) and note its requirements: minimum investment, technology conditions, staffing requirements.

2. Calculate whether you actually need the exemption. Build an 8-year financial model and see how much tax you would realistically save. If the saving is under roughly 3-4 million THB over the whole period, weigh it against the cost of the structure and annual compliance.

3. Do not register the company before filing. The BOI reviews a project proposal, not an existing legal entity. The company gets registered after approval, structured around the confirmed parameters and without Thai nominees.

4. Align your capital structure. Registered capital must cover at least a quarter of total investment, and debt-to-equity cannot exceed 3:1. Sources of financing need to be documented.

5. Prepare the technical package. Technology description, equipment and its cost, production process, projected value-added, and key staff qualifications. This section determines whether you land in A3 with tax benefits or in Group B without them.

6. Submit via e-Investment Promotion and prepare for the interview. Expect questions about the numbers in your model, not your pitch deck. Mismatches between the application and interview answers are the main reason for follow-up requests.

7. Accept the promotion within a month and meet the deadlines. Company registration and certificate application: 6 months. Project launch: 36 months. A missed deadline means the approval is revoked.

8. Plan a trip around the interview and OSOS visit. Some procedures in Bangkok require the director's physical presence, and it's far more practical to book accommodation near Chamchuri Square, where the investor service center operates, than to cross the city during rush hour.

FAQ

How much does it cost to get BOI approval in Thailand?

The government filing fee is modest. The main costs are preparing project documentation, the financial model, and legal support. Market estimates put turnkey support for a small project at several hundred thousand THB, more for manufacturing projects. Budget separately for the mandatory registered capital.

Can I get BOI promotion for a hotel or wellness center?

Medical centers, rehabilitation facilities, and health and wellness projects have realistic chances, especially when combining leisure with licensed medical services or sustainability features. For a standard hotel, the investment threshold is high and most private projects don't clear it.

Does BOI let me own land outright?

Yes, but only for the approved purpose. A promoted company can own land necessary for its approved activity, within the approved scope. This is not a license to buy land for resale, and if the promotion is revoked, the land must be sold within one year.

How long does the BOI decision take?

Officially, 40 to 90 working days depending on investment size. In practice, timelines stretch if the BOI requests additional documents. The Thailand FastPass mechanism, launched in 2026, aims to speed up approvals, but currently targets larger projects.

What is Thailand FastPass?

An accelerated support process guiding investors through all required approvals, not just BOI. It was announced in January 2026 as part of an updated support package.

Do I need a Thai partner for BOI?

No. Part of the point of BOI promotion is enabling ownership without Thai shareholders: the company can be 100% foreign-owned and receives a Foreign Business Certificate.

How many foreign employees can a promoted company hire?

The quota is set individually upon project approval, based on its nature and investment size. Visas and work permits are processed through the streamlined route at the investor service center.

Are there alternatives to BOI for 100% foreign ownership?

Yes: the Foreign Business License for certain activities, the International Business Center structure for service and management functions within a group, and sector-specific licenses. US citizens also have the Treaty of Amity, though it does not extend to most other nationalities.

What most often kills a BOI application?

Choosing the wrong activity category, registering a company beforehand with an unsuitable structure, and a financial model that doesn't align with the declared investment. Roughly three-quarters of issues originate before filing, not during review.

The most practical step today is to pull up the current BOI list of promoted activities and honestly find the line item matching your project. If there isn't one, don't force your business description to fit a category, look for another route to 100% foreign ownership. If there is one, don't register anything until after you file.

Source: Dzen (Kalinka Thailand)

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