How to Set Up a BOI-Promoted Company in Thailand: The 2026 Guide

If you're a foreign founder building a tech, manufacturing, or knowledge-based business in Thailand, BOI promotion is almost always the right structural choice. It grants you 100% foreign ownership, up to 13 years of corporate income tax exemption, simplified visa and work permit channels for your team, and even land ownership rights. But the application is detailed, and one wrong submission can cost months.

This guide walks through what BOI is, who qualifies, what benefits you actually get, and the step-by-step process — written from the perspective of a firm that handles BOI applications every week.

Quick answer: BOI promotion is a Thai government incentive program designed to attract foreign investment in priority industries. Approval typically takes 40–90 business days. The most valuable benefits are 100% foreign ownership and CIT exemption.

What is BOI Promotion?

The Board of Investment (BOI) is the Thai government agency under the Office of the Prime Minister responsible for attracting and facilitating foreign direct investment. Established in 1966 under the Investment Promotion Act, the BOI offers a package of fiscal and non-fiscal incentives to companies operating in industries Thailand wants to grow — technology, advanced manufacturing, biotechnology, digital services, and more.

Unlike a normal Thai Limited Company (which by default requires 51% Thai shareholding), a BOI-promoted entity can be 100% foreign-owned. This single fact is why BOI is the preferred route for most international investors.

Who Qualifies for BOI Promotion?

BOI promotion is activity-based. Your company qualifies if your business activity falls within one of the eight broad categories on the BOI's promotional list:

• Agriculture, food & biotechnology
• Medical industry
• Machinery and vehicles
• Electrical and electronic appliances
• Metals, materials & chemicals
• Public utilities and basic services
• Digital industries (software development, data centers, e-commerce platforms)
• Creative industries and high value-added services

For most foreign founders we work with, the relevant categories are Digital Industries (software, SaaS, fintech, AI, data analytics) and Creative & High Value-Added Services (regional headquarters, international business centers, R&D activities).

Common BOI-Eligible Activities for Foreign Founders

• Software development (including SaaS, mobile apps, AI/ML products)
• Digital services platforms
• International Business Center (IBC)
• Trade and Investment Support Office (TISO)
• Research and development (R&D)
• Data centers and cloud infrastructure
• Electronic design
• E-commerce platforms (with conditions)

What Benefits Do You Actually Get?

BOI benefits split into two categories: tax-based incentives and non-tax-based incentives. The exact package depends on your activity classification.

Tax-Based Incentives

• Corporate Income Tax (CIT) exemption for 3 to 13 years, depending on activity
• Import duty exemption on machinery and raw materials
• 50% reduction on CIT for an additional 5 years (in some categories)
• Double deduction on transportation, electricity, and water costs
• 25% deduction on installation or construction costs of facilities

Non-Tax Incentives (Often More Valuable)

• 100% foreign ownership — no Thai shareholders required
• Right to own land for the promoted activity
• Simplified visa and work permit via BOI's One Stop Service Center
• Permission to bring in foreign experts and skilled labor
• Right to remit foreign currency abroad without restriction

Capital and Investment Requirements

BOI sets minimum investment thresholds depending on activity. The general baseline is THB 1 million in investment capital (excluding cost of land and working capital), but knowledge-intensive activities can have lower thresholds, while heavy industry can require significantly more.

Importantly, BOI evaluates the substance of your investment — not just the registered capital number. Expect to demonstrate:

• A debt-to-equity ratio of no more than 3:1
• A clear three-year financial projection
• Genuine operational presence (office, equipment, staff)
• Compliance with environmental and labor standards

The 7-Step Application Process

1. Pre-application strategy session. Before drafting anything, we benchmark your business activity against the BOI promotional list and confirm which category and incentive package applies. This is where most DIY applicants lose months — choosing the wrong activity code.
2. Business plan preparation. BOI requires a detailed business plan covering market analysis, financial projections (3 years), technology transfer plans, and employment forecasts. We draft this in BOI-compliant English.
3. Application filing. Submission via the BOI e-Submission System with all supporting documents — including shareholder details, capital evidence, and project economics.
4. Panel interview. The BOI committee invites the applicant to present the project. We prepare and accompany you to this meeting. This is typically 60–90 minutes.
5. Approval and acceptance. Upon approval, BOI issues an Approval Letter. You then have 6 months to formally accept the promotion and incorporate the company.
6. Company incorporation and certificate issuance. Register the Thai Limited Company under the BOI structure. Once incorporated and shareholders capital injected, BOI issues the Promotion Certificate.
7. Operational launch. Apply for visas and work permits via BOI's One Stop Service Center, register for tax IDs, open the corporate bank account, and begin operations.

Realistic Timeline

From first strategy call to receiving your Promotion Certificate: typically 90–120 calendar days. From Promotion Certificate to fully operational (visas, bank, tax IDs): another 30–45 days.

Common Mistakes That Get BOI Applications Rejected

In our experience, the four most common reasons applications are delayed or rejected are all preventable:

• Wrong activity classification. Picking a category that sounds close but doesn't match BOI's strict definition. Always validate before filing.
• Weak financial projections. Numbers that don't reconcile with capital, hiring plan, or revenue assumptions raise red flags.
• Insufficient substance. Applications where the business looks like a paper structure with no real plan to operate locally.
• Missing supporting documents. Foreign-language documents not translated and notarized, or shareholder evidence not properly certified.

Is BOI Right for Your Business?

BOI is excellent if: (a) your activity is clearly on the promotional list, (b) you plan to operate substantively in Thailand for 5+ years, (c) you want 100% foreign ownership, and (d) you need to bring in foreign staff under simplified channels.

BOI is not the right choice if: you only need a small representative presence, your activity isn't promoted, or you need to begin trading in less than 60 days. In those cases, a Treaty of Amity company (for US citizens) or a standard Thai Limited Company is usually faster.

What Happens After You're Promoted

BOI status is not a one-time achievement. Promoted companies must:

• File annual operating reports (Form F PA POR 1) with BOI
• Maintain compliant accounting records separating BOI vs. non-BOI activity (where applicable)
• Submit annual financial statements to both BOI and the Department of Business Development
• Track and report on foreign-vs-Thai employee ratios as conditioned in the certificate
• Renew the Foreign Business Certificate as required

Failure to comply can result in withdrawal of promotion benefits — including retroactive CIT assessment. For most promoted clients, we manage all ongoing reporting under our monthly accounting retainer.

Next Step: Find Out If You Qualify

Every BOI application begins with a single question: does your activity qualify? Send us a short description of what your company will do in Thailand — we'll come back within 48 hours with a clear yes/no, the relevant category, and the likely incentive package.