Summary: A practical guide to BOI incentives—what you can get (tax holidays up to 13 years, ownership/land/visa benefits), common pitfalls, and a clear 8-step application process with timelines.
What is the Thailand Board of Investment (BOI)?
The Thailand Board of Investment (BOI) is a government agency that promotes both foreign and Thai investment by granting selected projects tax and non-tax incentives. BOI promotion is selective: only projects that meet current criteria in targeted sectors—such as technology, advanced manufacturing, green energy, and high-value services—qualify.
Overview of BOI Incentives
The BOI offers tax and non-tax benefits to eligible projects. For many foreign investors, the decisive advantage is a legal route to up to 100% foreign ownership for the promoted project (outside the standard 49% cap under the Foreign Business Act).
Tax incentives (activity-dependent)
- Corporate income tax (CIT) exemption — up to 13 years at top tiers
- Import duty relief — machinery; raw materials used for R&D or export
- Additional deductions — e.g., transport, electricity, water; certain construction/installation add-ons where applicable
Non-tax incentives (project scope)
- Up to 100% foreign ownership for the promoted project
- Land ownership for approved business use (and limited residential where allowed)
- Streamlined visas/work permits via BOI systems (e.g., e-Expert, One-Stop)
- Other facilitation measures (e.g., repatriation of foreign currency funds)
Decoding the Incentive Framework: The A/B Grouping System
BOI classifies promoted activities into Group A (tax incentives) and Group B (non-tax incentives). The A-tier determines the CIT holiday; B receives non-tax and import-duty benefits.
Group A (A1+, A1, A2, A3, A4) — CIT exemptions
- A1+: 10–13 years, no cap (frontier/targeted technologies).
- A1: 8 years, no cap.
- A2: 8 years, capped at 100% of investment.
- A3: 5 years, capped.
- A4: 3 years, capped.
Group B — no CIT exemption
Eligible for key non-tax incentives and import-duty relief (e.g., machinery; raw materials for R&D/export).
All BOI-promoted projects can access core non-tax incentives (foreign ownership for the promoted project, land for project use, BOI visa/work-permit facilitation).
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Other Incentives Offered by the BOI
In addition to the main incentives, the BOI offers extra benefits for projects that focus on research and development (R&D), training, and technology transfer. These merit-based incentives can offer extended tax exemptions and other benefits, depending on the level of investment.
Competitiveness Enhancement
- Support for R&D and advanced technology training.
- Incentives for local supplier development and product design.
- Financial benefits for IP licensing and partnerships with academic institutions.
Area-Based Incentives
Special benefits are provided for businesses in key economic areas, such as:
- Eastern Economic Corridor (EEC) and Special Economic Zones (SEZ).
- Provinces with low income or specific development needs.
- Industrial estates and technology parks.
Agenda-Based Incentives
These incentives are focused on:
- Economic recovery, smart industries, and business relocation.
- Support for skilled professionals and key industries like automotive.
Land Ownership and Employment Rules
The regulations surrounding land ownership and foreign employment are complex and subject to important updates. While BOI promotion offers significant advantages in both areas, it is crucial to be aware of the latest requirements.
- Land Ownership for BOI-Promoted Companies: One of the most powerful advantages of BOI promotion is the rare privilege for a foreign-owned company to own land for its business operations, bypassing Thailand’s strict restrictions. The regulations governing this privilege are detailed and have recently been updated with important new restrictions for certain industries. For a complete analysis of the current regulations, please see our detailed guide on BOI land ownership.
- New Rules for Hiring Foreign Employees: The BOI has introduced significant new regulations regarding the employment of foreign nationals. These include a mandatory Thai-to-foreign employee ratio for larger manufacturing companies and new minimum salary thresholds for foreign professionals based on their roles and qualifications. For a full breakdown of these critical changes, please refer to our specialized article on the new BOI employment rules.
Supported Industries
BOI promotes investment across a range of industries, organized into four main divisions, with 10 key industry categories within them.
The four divisions are:
- Agriculture, Food, Biotechnology, and Medical Industries
- Machinery, Automotive, Electrical Appliances, and Electronics
- Metal, Material, Chemical and Petrochemical Industries, and Public Utilities
- Digital, Creative Industries, and High-Value Services
These divisions are responsible for promoting the following 10 key industry sections (categories):
- Agriculture, Food, and Biotechnology
- Medical Industry
- Machinery and Vehicles Industry
- Electrical Appliances and Electronics industry
- Metal and Material Industry
- Chemical and Petrochemical Industry
- Public Utilities
- Digital Industry
- Creative Industry
- High-Value Services
Each category contains specific eligible activities that must meet certain criteria, such as minimum investment requirements or contributions to the Thai economy. For a complete list, visit the BOI’s official website or download their Investment Promotion Guide.
Is BOI Right for You? Common Pitfalls to Avoid
While the benefits are significant, the BOI process is rigorous. It’s not the right fit for every business. Here are key considerations and common mistakes to avoid:
- Ineligible Business Activity: The most common reason for rejection is applying for an activity not on the BOI’s list. Thoroughly check the latest list of eligible activities before starting.
- Underestimating Compliance: BOI promotion comes with strict reporting and compliance obligations, such as semi-annual progress reports. Smaller businesses should weigh if the benefits justify this administrative overhead.
- Poorly Prepared Application: Your application must be detailed, professional, and supported by a solid business plan with financial projections. Vague or incomplete submissions are quickly flagged.
- Ignoring Minimum Investment: Most BOI-promoted activities require a minimum investment of 1 million THB (excluding the cost of land and working capital). Ensure your project meets this threshold.
Step-by-Step Guide to BOI Promotion Application
The BOI promotion process consists of several stages — from assessing eligibility to post-approval compliance. The overview below reflects both official procedure and practical implementation.
Step 1: Feasibility and Eligibility Review
Check whether your business activity qualifies for BOI promotion under the current list of eligible activities and notifications. Evaluate whether potential benefits justify the compliance obligations — especially for smaller or service-based projects. Early professional guidance helps avoid ineligible activities and ensures your project meets BOI criteria before applying.
Step 2: Application Submission
Submit your application through the BOI e-Investment Promotion System. Required details include:
- Project overview and investment capital
- Technology and production process
- Staffing plan (Thai and foreign employees)
- Training and technology transfer
- Production, sales, and financial projections
Note: Certain categories — such as business transfers, performance improvement, or social/local development projects — must still be submitted in paper at the BOI Head Office.
Step 3: Project Presentation and Evaluation
Within approximately 10 working days from submission, BOI schedules a presentation (interview) to review your model, technology, and investment plan. Additional documents may be requested.
Evaluation timelines after submission of complete documents:
- Up to 200 million THB: 40 working days
- 200 million – 2 billion THB: 60 working days
- Over 2 billion THB: 90 working days
Step 4: BOI Resolution and Acceptance
Once approved, BOI notifies applicants within 7 days of the decision.
You must accept the promotion resolution within one month by submitting the Promotion Acceptance Form via the online system. Failure to do so automatically voids the approval.
Step 5: Company Registration
After acceptance, register the company within six months.
Foreign investors must remit the registered capital from abroad before or shortly after incorporation and provide official proof to BOI (typically the Foreign Exchange Transaction Form (FETF), bank credit advice, or equivalent). Core corporate documents include the company registration certificate, shareholder list, and articles of association.
Step 6: Promotion Certificate Application and Issuance
Once the company is registered, apply for the Promotion Certificate through the BOI online system.
The certificate is typically issued within 10 working days after submission of complete documents and sets out the project’s conditions, benefits, and implementation timeline.
Step 7: Visa and Work Permit Arrangements
Register in the e-Expert System to employ foreign specialists and apply for visas and work permits via the BOI One-Stop Service Center. This is generally faster than applying directly through the Ministry of Labour or the Immigration Bureau.
Step 8: Post-Approval Compliance and Reporting
After receiving the promotion certificate, the company must comply with BOI monitoring requirements, including:
- Semi-annual progress reports (every February and July) via the e-Monitoring System
- Commencement of full operations within 36 months from the promotion certificate date (extensions may be granted by BOI upon request made before the deadline)
- Compliance with applicable standards (e.g., ISO, environmental)
Non-compliance may result in suspension or revocation of BOI incentives.
Completing these steps accurately helps ensure smooth approval, timely certificate issuance, and continued access to BOI benefits.
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