Résumé Thailand EV policy changes in 2026 introduce stricter local production requirements, updated EV 3.5 rules, and new battery localisation standards. Despite tighter compliance, Thailand continues to offer attractive BOI incentives and EEC investment opportunities, making it a leading destination for foreign EV manufacturers looking to establish long-term production in Southeast Asia.
Introduction :
Thailand’s electric vehicle (EV) sector has grown rapidly and is now an important part of the national economy, attracting interest from major manufacturers worldwide. Investment commitments under the EV 3.0 and EV 3.5 schemes have surpassed THB 137 billion, reinforcing Thailand’s role as a regional hub for EV production.
For foreign investors, the key issue is not market potential, but regulatory change. The Thailand EV policy changes introduced in late 2025 and implemented through 2026 have completely changed the operating environment. Under the EV 3.5 framework, manufacturers must now produce two vehicles locally for every one imported in 2026, rising to three-to-one in 2027.
Points clés
- Thailand’s 2026 EV policy shifts focus from imports to local production and supply chain development, with stricter compliance requirements.
- Manufacturers must meet a 1:2 production-to-import ratio, rising to 1:3 in 2027, or risk losing incentives.
- Export credits (1.5x) and extended deadlines provide flexibility in meeting production targets.
- Battery localisation rules now limit imported battery components to 10%, pushing domestic manufacturing.
- The EEC and BOI incentives remain central, offering tax benefits, foreign ownership, and support for EV and battery projects.
What Changed in Thailand’s EV Policy for 2026?
The Thailand EV policy changes approved by the National EV Policy Board in late 2025 introduced a wide range of changes to how incentives are awarded and the introduction of new mandatory requirements.
The four key developments that have been introduced for 2026 include:
1. Production-to-import ratio tightened
Manufacturers operating under the new EV 3.5 Thailand policy must now comply with a 1:2 production ratio in 2026. This means for every imported EV, two must be produced domestically. This requirement will be increased to 1:3 by 2027 .
2. Export credit introduced
To help manage supply pressures, certain EV export incentives for Thailand were introduced. Under this policy, each EV that is exported counts as 1.5 units toward a manufacturer’s local production targets.
In practice, this means that for every vehicle exported, manufacturers receive additional credit when meeting their production obligations under the incentive scheme. This reduces the pressure to sell all vehicles domestically and gives more flexibility in balancing supply and demand.
This makes exports more valuable and encourages companies to use Thailand as a base for producing EVs for international markets.
3. Registration deadlines extended
The government has also extended registration deadlines to give manufacturers more time to align production with compliance requirements.
In this context, “registration” refers to the process of formally recording a vehicle with the relevant Thai authorities, including completing compliance checks and issuing registration documents. This is the stage at which a vehicle is officially recognised and counted toward a manufacturer’s production obligations under the incentive scheme.
Under the updated timelines, EV 3.5 deadlines extend further, with registrations permitted until January 2028. In practical terms, this gives manufacturers additional time to meet production targets, manage inventory, and complete registrations without falling out of compliance.
These extensions provide greater operational flexibility, particularly for companies scaling up production or adjusting to changes in demand.
4. Battery localisation rule tightened
From 1 January 2026, imported battery cells can account for no more than 10% of an EV’s factory price if manufacturers want those vehicles to qualify for local incentives .
Updates to hybrid vehicle tax rules
Thailand has also adjusted excise tax rates for hybrid vehicles. While Battery Electric Vehicles (BEVs) remain taxed at a preferential 2%, hybrid vehicles now fall within a structured tax range.
The framework distinguishes between Plug-in Hybrid Electric Vehicles (PHEVs), standard Hybrids (HEVs), and Mild Hybrids (MHEVs), with rates based on electric driving capacity and carbon emissions.
- Plug-in Hybrid Electric Vehicles (PHEV): Rates are tied to electric-only driving range, with a 5% duty applied to vehicles capable of 80 km or more per charge, and a 10% duty for those with a range under 80 km.
- Standard (HEV) and Mild (MHEV) Hybrids: Taxes are determined by emissions, as outlined in the table below.
| Hybrid Category | CO2CO_2CO2 Emissions | Excise Tax Rate |
| HEV | Not exceeding 100 g/km | 6% |
| HEV | 100 g/km – 120 g/km | 9% |
| MHEV | Not exceeding 100 g/km | 10% |
| MHEV | 100 g/km – 120 g/km | 12% |
These adjustments incentivize the production and adoption of vehicles with higher electric ranges and lower carbon footprints, helping align Thailand’s automotive industry with global sustainability targets.
Who is affected?
Manufacturers that imported vehicles under EV incentive schemes may now be required to either commence local production or exit the programme by repaying the tax benefits received, including applicable penalties. This reflects a shift from initial market entry support toward a stronger focus on local production and compliance.
BOI Incentives for EV Manufacturers and Battery Makers
The BOI EV incentives on offer have made Thailand one of the most competitive frameworks in ASEAN for electric vehicle manufacturing and battery production. The BOI has designed the incentives to attract long-term industrial investment, with a clear focus on high-value activities such as battery cell manufacturing, advanced component production, and supply chain localisation.
For foreign investors, these BOI EV incentives offer other significant advantages beyond standard tax reductions. The BOI offers 100% foreign ownership, land ownership rights and reduced requirements for supporting visa and work permit applications for foreign investors.
For eligible projects, obtaining a BOI promotion allows foreign manufacturers to enter the Thai market with fewer limitations and greater operational control.
As well as the general incentives offered by the BOI, there are additional or enhanced benefits available for projects who are involved in the EV industry, for example:
- Battery cell manufacturing: 8-year corporate income tax exemption
- Battery modules: up to 8 years (capped)
- Battery packs: up to 5 years
- Charging infrastructure: 5-year CIT exemption for qualifying projects
These incentives are designed to move the industry beyond basic assembly into advanced battery manufacturing in Thailand.
Additional investment incentives
In an effort to further accelerate the industrial modernisation and strengthen supply chain localisation within Thailand’s EV and battery sectors, the BOI offers the following additional incentives.
90% Import Duty Reduction on Raw Materials
Manufacturers who undertake battery cell or module production under BOI-promoted activities, including high-energy-density battery manufacturing, may benefit from a 90% reduction on import duties for essential raw materials that are not available domestically. This incentive is granted on an annual basis and can be renewed for up to five years.
Automation, Sustainability, and Productivity Upgrades
Under the “Smart and Sustainable Industry” measure, companies investing in automation, robotics, and digital infrastructure can access a 3-year corporate income tax exemption, capped at up to 100% of the investment value, excluding land and working capital. In addition, import duty exemptions on machinery used for these upgrades is also available.
Localisation Programmes and Joint Venture Incentives
Thailand has introduced targeted measures to strengthen domestic supply chains through collaboration between foreign investors and Thai partners. For automotive parts manufacturing projects, forming a joint venture with a Thai partner holding at least 20% equity can unlock an additional 3-year corporate income tax exemption.
The Thai partner must be at least 60% Thai-owned and have a minimum of three years’ experience in the automotive or auto-parts sector. These measures are designed to integrate local suppliers into global EV supply chains while facilitating technology transfer alongside foreign investment.
Workforce requirements
The Thailand Board of Investment has updated its rules so that foreign investment better supports Thailand’s wider economic goals. For investors, this means setting up a business that helps create local jobs, develop skills, and share technology, while still benefiting from the full range of BOI EV incentives.
For a company to maintain its BOI-promoted status, large companies are now required to follow clear staffing requirements. These are designed to balance hiring local employees with bringing in foreign expertise where needed.
- 70% Local Workforce: Large firms (companies with 100+ employees) are required to maintain at least 70% of their total workforce as Thai nationals. Exemptions are available to such companies who are involved in the service sectors (IT, consulting), temp roles, high-tech projects.
- Foreign Employee Thresholds: While foreign specialists are permitted, they must meet minimum salary thresholds to qualify for non-immigrant visas and work permits under the BOI’s “smart visa” or investment-related channels.
- Highly Specialized Roles: Exceptions are granted for roles requiring specific technical expertise unavailable in the local labor market. Companies must provide documentation justifying these hires to the BOI to receive work permit approval.
Why the Eastern Economic Corridor Is Where EV Investment Lives
The Eastern Economic Corridor (EEC) is a key part of Thailand’s Thailand 4.0 strategy, covering Rayong, Chonburi, and Chachoengsao. The EEC has been designed to build upon the region’s long-standing role as an industrial hub and is now being developed into a centre for advanced industries and innovation.
With strong government support and a clear, well developed framework, the EEC offers an attractive environment for both local and foreign investors to set up and grow operations.
The EEC focuses on next-generation sectors such as electric vehicles, intelligent electronics, advanced agriculture and biotechnology, medical and high-value tourism, and digital industries. These areas have been specifically chosen as focus areas for future economic growth.
To attract investment, the Thailand Board of Investment (BOI) offers incentives for qualifying projects in the EEC, including 100% foreign ownership, corporate tax exemptions of up to 15 years, import duty exemptions, and a reduced personal income tax rate of 17%. Additional support is available for research and development through the Eastern Economic Corridor of Innovation (EECi).
The Eastern Economic corridor EV ecosystem is the centre of Thailand’s EV industry. Nearly all major investments are concentrated in Rayong and Chonburi.
Why the EEC matters
The Eastern Economic Corridor also offers the following significant advantages for EV related businesses:
- Direct access to Laem Chabang deep-sea port
- Established automotive supply chains
- Dedicated industrial estates under Industrial Estate Authority of Thailand
- Infrastructure built specifically for large-scale manufacturing
Illustrative scenario:
A European Tier-1 supplier considering EV manufacturing in Thailand could set up their base in Rayong, obtain a BOI promotion, secure land through IEAT, and supply nearby OEMs such as BYD or MG, particularly where manufacturers are sourcing more parts locally.
In practice, how the project is structured will directly affect how quickly it progresses. Our Bangkok-based team works closely with companies across the EEC, advising on EV manufacturing in Thailand projects to help keep timelines realistic and avoid delays that can significantly extend setup periods.
Real Opportunities For EV Businesses in 2026
The Thailand EV policy 2026 framework has moved beyond early incentives and is now focused more on actual production and local supply chains. This shift is starting to highlight clear gaps in the market, especially in areas where local capacity still cannot meet demand. For investors, this points to more defined opportunities in parts of the supply chain that support localisation, improve cost efficiency, and strengthen long-term growth.
1. Battery cell manufacturing
Thailand still lacks large-scale domestic battery cell production. BOI incentives offer an 8-year CIT exemption, making this the highest-value opportunity in the supply chain.
2. Charging infrastructure
Around 70% of EV charging stations are concentrated in Bangkok. Regional expansion remains underdeveloped, particularly along highways and secondary cities.
3. EV components and Tier-1 supply
Local content requirements under the EV 3.5 Thailand framework are pushing manufacturers to source more parts within the country rather than relying on imports. In simple terms, automakers need to use a higher percentage of locally produced components to qualify for incentives and remain competitive in the market.
This is creating strong demand for Tier-1 suppliers, which are companies that supply directly to vehicle manufacturers. These suppliers typically produce key components such as battery systems, power electronics, drivetrains, and other high-value parts used in EV production.
For investors, this opens up a clear opportunity. Component manufacturers that set up local operations can benefit from BOI incentives, while also securing long-term demand from OEMs looking to meet localisation requirements. In practice, this means more stable supply agreements, closer integration with production facilities, and a stronger position within Thailand’s growing EV manufacturing ecosystem.
4. Hybrid manufacturing
Recent changes to tax structures have made hybrid vehicles more commercially viable again in Thailand. This has reopened the door for manufacturers that are not yet ready to move fully into battery electric vehicle (BEV) production but still want to participate in the shift toward electrification.
In practical terms, hybrid manufacturing offers a transitional step. It allows companies to adapt existing production lines, manage costs more gradually, and build local supply chains without committing immediately to full EV platforms.
For investors, this creates a more flexible entry point into EV manufacturing in Thailand. Hybrid projects can still benefit from targeted incentives and strong market demand, while giving manufacturers time to scale up capabilities and align with longer-term EV strategies.
Each of these opportunities requires a different legal structure, potential BOI category, and application process. For a project-specific assessment, you can schedule a consultation with Lex Nova Partners to map your entry strategy.
Practical Legal Setup for an EV Project in Thailand
Setting up an EV operation involves five structured stages.
Stage 1: Eligibility Check (1 week)
A business feasibility study helps assess whether a project is suitable for BOI promotion and the likelihood of approval.
As part of this process, our BOI specialists liaise directly with the relevant BOI officer to confirm eligibility, verify that the activity is still eligible for promotion, and identify the key conditions and requirements for companies. This provides clear, practical guidance before any formal application is submitted.
Selecting the correct BOI category at the outset is highly important. It is not uncommon for applications to proceed to the interview stage before being rejected due to incorrect category choice, requiring the process to be restarted and causing avoidable delays.
A feasibility study reduces this risk and helps streamline the application process. Lex Nova’s BOI team can assist with a structured feasibility assessment and initial eligibility review.
Stage 2: BOI application preparation (3 weeks)
The BOI application process requires detailed and well-structured information aligned with the specific business activity being proposed.
Applicants must submit key information including project details, capital structure, hiring plans (both Thai and foreign staff), and a list of assets such as machinery, software, and equipment. Supporting evidence of existing clients or business prospects is also important to demonstrate commercial viability.
A three-year business plan is a central part of the application. This plan is used by the BOI to assess the project and determine minimum investment requirements, so it must be realistic and commercially valid. While the plan is not strictly binding, any significant deviation from the approved activity may raise issues during compliance reviews.
In practice, the application forms can be technical and sometimes unclear, particularly for non-industrial activities. Despite this, all sections must be completed accurately, as the information is interconnected and may affect other parts of the application.
Additional supporting documents typically include a detailed employee plan, asset breakdown, appendices with operational details, and a presentation explaining the business model and target clients.
A well-prepared application should present clear, consistent financials, a credible business model, and evidence of market demand. The BOI places significant weight on the applicant’s ability to operate successfully in Thailand, particularly where there is an established parent company or proven track record.
Given the level of detail involved, careful preparation is essential. Incomplete or inconsistent information can lead to multiple rounds of queries from the BOI and delay the process, which typically takes around one month for initial review, depending on the complexity of the project.
Stage 4: BOI application submission and interview (3–4 months)
After the BOI application is submitted and accepted, the applicant will be invited to present the project to the BOI officer. This meeting is held online via Zoom, lasts around one hour, and requires a structured presentation explaining the business, operations, target market, and the value the project will bring to Thailand.
The presentation is a highly important part of the process. It gives the BOI officer a clear understanding of the project, which is important as they will later present it to the BOI Committee. In most cases, the applicant presents for up to 30 minutes, followed by questions from the officer.
In practice, the interview often leads to adjustments. The BOI may request changes to the scope of activities, and having experienced advisors involved allows these updates to be handled quickly and aligned with BOI expectations.
A well-prepared presentation can significantly improve the approval process. If the project is clearly explained and supported by consistent information, approval can move forward with limited follow-up. If not, the application may face multiple rounds of questions and delays.
Following the interview, the BOI officer submits the project for approval. Timelines vary depending on the investment size, currently taking around 6 to 8 months, and may be longer if additional approvals are required.
Once approved, the applicant has 30 days to accept the BOI terms. After acceptance, there is a six-month period to establish the company and meet the investment requirements, with extensions available if needed.
Careful preparation at both the application and presentation stages helps avoid delays and supports a smoother approval process.
Stage 5: Corporate setup (8 weeks)
Once BOI approval has been granted, the applicant has six months to register the company and meet the minimum investment requirement. To achieve this, the following steps should be completed.
Company setup and structure
A Thai limited company needs to be registered with at least two individual shareholders, one or more directors, and registered capital aligned with BOI requirements. While companies are initially registered with individual shareholders, shares can later be transferred to a foreign parent company.
Bank account and capital transfer
A corporate bank account must be opened to receive the investment funds. If the project has foreign shareholders, their portion of the capital must be transferred to Thailand from abroad in foreign currency, clearly stating it is for investment purposes. Once the capital has arrived in Thailand a Foreign Exchange Transaction (FET) form must be obtained from the bank.
Any incorrectly labelled or unclear transfers may be rejected and delay the process.
BOI certificate application
Once the capital is in place, the company applies for the BOI promotion certificate by submitting corporate documents and proof of funds. This usually takes around one month.
Post-registration compliance
The company must register for VAT (in most cases) and with the Social Security Office before hiring employees. Hiring foreign staff under BOI benefits can only proceed after the BOI certificate is issued.
Foreign Business Certificate (FBC)
If the activity falls under restricted categories, a Foreign Business Certificate is required before operations can begin. Without it, the company cannot legally operate or issue invoices, even if BOI promotion has been granted.
Immigration and workforce
Even if a company has obtained a BOI promotion, every foreign employee in Thailand needs to obtain the correct Visa and Work Permit. It is important to note that companies promoted by the BOI are not subject to the same requirements as other company structures. For example, BOI promoted companies are not restricted by the same mandatory capital and minimum Thai staff requirements.
Pour pouvoir embaucher du personnel étranger, l'entreprise doit s'enregistrer auprès du système « Guichet unique pour les visas et les permis de travail » (anciennement connu sous le nom de système E-Expert). L'enregistrement sur ce système permettra à l'entreprise de soumettre de futures demandes de travailleurs étrangers.
After a post has been submitted, opened, and accepted through the Single Window for Visas & Work Permits system, the applicant may apply for their visa and a work permit at the BOI Thailand Investment and Expat Services Center (TIESC).
Lex Nova Partners : votre partenaire pour les demandes auprès du BOI
Les demandes auprès du BOI ne se limitent pas à remplir un formulaire ; elles nécessitent une planification et une préparation minutieuses afin de garantir que le projet réponde aux exigences et aux critères du BOI.
A successful application often depends on understanding how policies are applied in practice, not only how they are written. Lex Nova’s team offers extensive experience and familiarity with BOI procedures, and actively monitors BOI incentives news so clients can benefit from new opportunities as soon as they arise.
Suivi en temps réel des politiques du BOI
Notre équipe se tient informée de toutes les dernières actualités et évolutions en suivant en permanence les mises à jour des politiques du BOI et les dernières réglementations du BOI, directement à partir de sources en langue thaïe.
Notre équipe examine les annonces officielles dès leur publication, assure la coordination avec les responsables du BOI et ses contacts dans le secteur, et traduit les modifications réglementaires complexes en conseils pratiques en anglais.
Expertise bilingue anglais-français
Lex Nova propose un accompagnement juridique bilingue en anglais, en thaï et en français, permettant aux clients d’aborder des questions juridiques et commerciales complexes dans une langue qui leur est familière. Les clients bénéficient ainsi d’un accompagnement documentaire clair, réduisant les malentendus souvent liés à une communication reposant uniquement sur la traduction.
Intégration de services complets
En tant que cabinet d’avocats offrant une gamme complète de services à Bangkok, nous accompagnons nos clients dans le cadre de leur promotion auprès du BOI, de la création de leur société, des formalités relatives aux visas et aux permis de travail, de la structuration fiscale ainsi que de la conformité continue, le tout dans le cadre d’une stratégie cohérente.
Cette approche permet d’éviter les retards et les incohérences qui peuvent survenir lorsque plusieurs conseillers interviennent sur un même projet. Pour en savoir plus sur nos services, rendez-vous ici : https://lexnovapartners.com/expertise/
Frequently Asked Questions (FAQ)
What changed in Thailand’s EV policy for 2026?
The 2026 EV framework shifts from import incentives to local production and supply chain development. Manufacturers must now produce 2 EVs locally for every 1 imported (1:2 ratio), with exported vehicles counting at a 1.5x credit toward this requirement. Deadlines to meet production targets have been extended to give investors more flexibility, while new rules, including limits on imported battery components, are designed to promote more local sourcing.
What is the EV 3.5 scheme and who qualifies?
EV 3.5 is Thailand’s current incentive programme. It applies to manufacturers investing in local production and meeting localisation and compliance requirements.
What is the production-to-import ratio for EV manufacturers in Thailand in 2026?
1:2. Manufacturers must produce two vehicles locally for every imported unit, rising to 1:3 in 2027.
Can foreign EV manufacturers own land in the Eastern Economic Corridor?
Yes. Foreign ownership is permitted within IEAT industrial estates within the EEC area or through BOI promotion structures.
How long does BOI approval take for an EV manufacturing project?
Currently, around 8 months. Complex projects may take longer depending on technical scope and documentation.
Does Thailand still subsidise hybrid vehicles after 2026?
Yes, but differently. Hybrid vehicles now benefit from revised excise tax rates rather than direct subsidies.
What is the corporate income tax exemption for EV battery cell production?
8 years. This applies to projects that include full battery cell manufacturing processes.
Nos réflexions
Le Thailand EV policy changes implemented in 2026 is expected to lead to a more structured and developed EV ecosystem. The framework is more restrictive to foreign investors due to localisation requirements, higher production obligations, and tighter compliance conditions, but still highly favourable for serious investors, particularly in battery manufacturing, supply chains, and EEC-based production.
At Lex Nova Partners, our Bangkok-based team handles corporate, tax, employment, immigration, and regulatory matters together under one coordinated workflow. We regularly support SME and foreign investors in Thailand, with bilingual English and French support available throughout the transaction process.
Before signing anything or paying a deposit, it is often advisable to obtain legal and tax structuring advice first. To discuss starting your business in Thailand, contact our team at +66 (0)6 5527 6323 or [email protected], or visit our office at Ocean Tower 2, 14th Floor, Sukhumvit 19, Bangkok. You can also schedule a 30-minute structuring call through the Lex Nova Partners contact page.
Veuillez noter que cet article est fourni à titre d'information uniquement et ne constitue pas un avis juridique.
