As 2025 unfolds, the Thailand Board of Investment (BOI) continues to shape Thailand’s foreign investment landscape through a dynamic incentive framework. For foreign companies assessing where and how to invest — whether in high-tech manufacturing, EVs, biotech, or creative industries — understanding the current top incentives is critical. Below is a breakdown of the most valuable BOI incentives that foreign companies are leveraging this year, along with key changes and strategic considerations.
Core BOI Incentive Structure in 2025
Activity Groups (A1+ → B) & Tax-Holiday Durations
The BOI classifies eligible business activities into groups — from A1+ (frontier and targeted technologies) down to A4 — with corresponding corporate income tax (CIT) exemption periods.
| BOI Group | Typical CIT Exemption Period* | Applies To |
|---|---|---|
| A1+ | 10–13 years (without exemption cap) | Frontier and targeted high-technology activities |
| A1 | 8 years (without exemption cap) | Advanced manufacturing, high-value services |
| A2 | 8 years (capped at 100% of investment) | Selected promoted activities |
| A3 | 5 years (capped) | Mid-tier eligible promoted activities |
| A4 | 3 years (capped) | Entry-level promoted activities |
| Group B | Non-tax incentives and import-duty benefits | Promoted sectors not eligible for CIT holiday |
* Some projects may receive merit-based CIT extensions depending on location, investment value, or special criteria (see below).
Beyond tax holidays, BOI also provides import-duty exemptions or reductions on machinery and raw materials (for both export and domestic sale, depending on activity), and non-tax incentives such as corporate structuring flexibility, fast-track work permits, long-term visas, and in some cases, land-use privileges.
Merit-Based & Location-Based Additional Incentives
To encourage investment in strategic sectors and provinces, the BOI offers stackable merit-based incentives. Key advantages in 2025 include:
- Decentralisation Merit: Locating operations in one of the 20 targeted provinces may grant up to 3 additional years of CIT exemption, typically subject to a total maximum of 13 years.
- Utility & Infrastructure Cost Benefits: For 10 years from the project’s first revenue date, BOI allows a double deduction of transportation, electricity, and water-supply expenses. Investors may also deduct 25% of facility installation or construction costs in addition to standard depreciation.
- R&D and Human Resource Development (HRD): Innovation, training, or local supplier development may qualify for enhanced tax relief. For certain R&D-intensive projects, BOI may approve deductions of up to 300% of eligible expenses.
- Industrial Estate / Zone Benefit: Projects located inside promoted industrial zones may receive 1 additional year of CIT exemption, although total CIT holidays generally cannot exceed 8 years unless classified under A1+ (where up to 13 years remains possible).
Top 2025 Target Industries for Foreign Investors
BOI incentives in 2025 are strongly aligned with global investment and economic trends. Foreign investors are prioritising:
- Electric Vehicles (EVs) & Auto Parts: Continued support for EV assembly, battery manufacturing, charging technology, and components covering combustion, hybrid, and electric vehicle supply chains. Joint ventures between foreign and Thai companies in auto parts continue to receive priority support.
- BCG Economy & Biotechnology: Incentives for sustainable agriculture, bioplastics, future food, environmental technology, and biotech innovations. Many activities qualify for long CIT holidays (often 10–13 years under A1+ classification).
- High-Value & Advanced Manufacturing: Energy-efficient, automated, and high-precision manufacturing continues to be prioritised under A1+/A1 incentive tiers.
- R&D and Innovation-Driven Projects: Generous merit-based incentives remain available even for non-traditional manufacturing models, provided strong long-term value is demonstrated.
- Creative & International Services: Tourism, cultural ventures, events, entertainment, and international service businesses continue to benefit from BOI’s non-tax incentive framework.
Key BOI Policy Updates Effective From 2025
Foreign investors should pay special attention to recent regulatory changes and upcoming restrictions:
- Land Ownership Privilege Restrictions (from 1 September 2025): Newly promoted foreign BOI companies in specific sectors (metals, chemicals, plastics, etc.) will no longer automatically receive land ownership rights. Eligibility will instead depend on strong BOI promotion history and high-value investment track records.
- Stricter Foreign Personnel Requirements (from June 2025): Promotion certificates issued from June 2025 require increased prioritisation of Thai staffing, knowledge transfer, and local talent development for foreign expert and technician roles.
- Global Minimum Corporate Taxation Trends: Investors using long tax-holiday models should now incorporate international tax coordination and global compliance into their investment structuring strategy.
- Priority on Long-Term Impact: The BOI is increasingly emphasising sustainability, innovation, R&D, human-capital development, and domestic supply-chain strengthening over low-cost assembly models.
Strategic Recommendations for BOI Applicants
- Align your project with the correct BOI group — high-tech or BCG-focused investments gain the longest tax-holiday advantages.
- Stack merit-based benefits — utilities, R&D, provinces, and infrastructure incentives can be combined when well-justified.
- Prepare for land and staffing compliance if operating in newly restricted sectors.
- Structure for long-term value — BOI now strongly rewards measurable national economic impact.
- Engage early and prepare documentation — especially for R&D and operational cost deduction approvals.
What 2025 Means for Foreign BOI Investors
The BOI remains one of Thailand’s most strategic enablers for foreign direct investment. Thailand is positioning itself as a hub for high-technology production, sustainable industry, EV ecosystems, and BCG innovation — offering foreign investors a powerful mix of tax and operational advantages.
However, new 2025 policy directions highlight a more balanced approach: foreign investment is now paired with stronger local workforce development, sustainability requirements, and national economic impact expectations. Companies that invest with long-term vision, measurable value creation, and domestic collaboration will have the highest probability of approval and sustained success.
