BOI Promotion & Company Setup in Rayong (EEC)
EV, battery, petrochemical and advanced-manufacturing BOI applications across Map Ta Phut Industrial Estate, WHA Eastern Seaboard, Amata City Rayong and the EECi innovation zone.
Rayong: the EV and petrochemical core of the EEC
Rayong sits at the heart of Thailand's Eastern Economic Corridor and concentrates the country's largest chemical, automotive and energy clusters. The province hosts both heavy industry on the Map Ta Phut coast and clean-tech R&D inland at the EECi campus in Wang Chan Valley.
For BOI applicants, Rayong is the default location for EV manufacturing, battery production, advanced materials and any project relying on chemical feedstocks. It is also one of the most BOI-active provinces, with a long history of Japanese, Chinese, Korean and European tier-1 suppliers.
Belaws prepares Rayong-located BOI applications for foreign investors across the full sector range — from EV and battery makers selecting between WHA and Amata City to specialty chemicals producers locating inside Map Ta Phut.
Six key BOI clusters in Rayong
Each Rayong estate serves a specific industrial profile. Picking the right address matters for BOI category fit, downstream permits and operating costs.
Map Ta Phut Industrial Estate
IEAT-managed petrochemical and heavy industry estate on the Rayong coast. Home to PTTGC, IRPC and the bulk of Thailand's chemical industry. Deep-water port included.
WHA Eastern Seaboard Industrial Estate
Multi-tenant private estate spanning Rayong and Chonburi boundaries. Strong automotive and electronics presence; widely used for tier-1 supplier BOI applications.
Amata City Rayong
Sister estate to Amata City Chonburi. Auto components, consumer goods, food processing and general manufacturing tenants. Service-rich operating environment.
EECi — Wang Chan Valley
Eastern Economic Corridor of Innovation. R&D campus dedicated to biotechnology, biorefining, robotics and aerospace pilot projects with BOI super-deduction privileges.
Hemaraj Eastern Seaboard
Another major private industrial estate cluster, with broad sector coverage and direct access to Highway 331 and the eastern seaboard logistics corridor.
U-Tapao Aerotropolis (Ban Chang)
Around U-Tapao international airport, the EEC plan designates an aerotropolis zone for aviation MRO, aerospace components and air-cargo logistics BOI activities.
Which BOI category fits a Rayong project?
These four clusters cover most of the BOI activity approved in Rayong over the past five years.
Electric vehicles & batteries
EV assembly, battery cell and pack production, EV components, charging infrastructure — currently among the BOI's most active priority categories.
Petrochemicals & specialty chemicals
Downstream chemicals, performance polymers, fine and specialty chemistry — typically anchored at Map Ta Phut and feeder estates.
Intelligent electronics & automotive
Tier-1 suppliers, ECU and sensor manufacturers, electronics for the automotive supply chain — concentrated around WHA and Amata City.
Biotech, biorefining & aerospace pilots
EECi-resident projects across biotech, advanced materials, robotics, aerospace components and other R&D-heavy activities.
How to qualify for BOI promotion in Rayong
An EEC-located application follows the BOI's standard six-step path with extra attention to site fit.
- Activity checkIdentify the right BOI activity code and any EEC-priority tier. For Rayong, EV, batteries, robotics and biorefining have their own enhanced sub-categories.
- Site selectionChoose between IEAT-managed estates (Map Ta Phut) and private estates (WHA, Amata City, Hemaraj) based on sector fit and permit envelope.
- Application filingCompile and file the project, financials, technology transfer plan and capital structure through the e-BOI portal.
- BOI pitchPresent the project to the BOI committee in Bangkok. Rayong EV and battery projects routinely include detailed supply-chain commitments.
- Approval & companyReceive the approval letter, incorporate the promoted entity, open the bank account and transfer the paid-up capital.
- FBC & operationsForeign Business Certificate, BOI visas, work permits, machinery import schedule and the first BOI annual report.
BOI mistakes to avoid for Rayong projects
Do
- Match your activity to a current EEC-priority sub-category — these change with BOI announcements
- Compare IEAT vs private estates before committing to a lease
- Plan the machinery import schedule alongside the BOI application
- Pre-discuss labour ratio expectations with the BOI for your activity
- Coordinate with the BOI's Rayong One-Stop branch for routine post-approval interactions
- Document your technology transfer commitment in detail — committees ask for specifics
Don't
- Sign a Map Ta Phut lease before checking BOI category fit
- Assume Rayong's EEC location automatically grants the highest CIT exemption tier
- Overlook environmental impact requirements for petrochemical projects
- Mix two unrelated activities in one application — split them or request two BOI certs
- Promise EV cell volumes that your capital cannot fund
- Skip the FBC step after BOI approval — required for foreign-majority operations
Why Rayong concentrates so much BOI activity
Rayong's combination of deep-water petrochemical infrastructure, established automotive supply chain and EECi R&D campus is unique in Thailand. The province hosts a disproportionate share of BOI-promoted projects, particularly in the EV, battery and chemicals sectors.
From Bangkok, Rayong is around 185 km by Motorway 7. Most BOI committee meetings are held at the BOI head office in Bangkok, with site visits arranged separately when needed.
Belaws BOI coverage across Rayong
We support BOI applicants based anywhere in the province. Each sub-area has its own sector profile and estate mix.
Our five BOI services for Rayong projects
Eligibility & EEC tier mapping
Written assessment within three business days covering activity fit, applicable EEC enhancements and capital structure recommendations.
Application preparation & filing
Document compilation, BOI form completion, technology transfer narrative, financial projections and e-BOI submission.
BOI pitch preparation
Mock pitch sessions, briefing on your activity's typical committee questions and attendance at the BOI meeting in Bangkok.
Promoted company setup
Incorporation of the BOI entity, capital structuring, corporate bank account opening and registered capital transfer assistance.
Post-approval & operations
Foreign Business Certificate, machinery import schedule, BOI visas and work permits, BOI annual reporting.
Our four-step BOI process
- Eligibility assessmentThree business days for a written assessment covering BOI category fit and EEC enhancements.
- Application preparation & filingOne to two weeks to prepare and submit the file through e-BOI.
- BOI pitchOne to two weeks after filing, you present the project to the BOI committee in Bangkok.
- Approval & company registrationAbout three weeks to register the promoted company; two more for the Foreign Business Certificate.
Location
Continue across the EEC
Explore the rest of the Belaws EEC silo or jump back to the EEC overview.
FAQ
Can an EV battery manufacturer qualify for BOI in Rayong?
Yes — battery cell, pack and component manufacturing are among the BOI's actively promoted EEC-priority categories. Rayong is the most common location for these projects because of existing infrastructure at WHA, Amata City and adjacent estates.
What's the difference between Map Ta Phut and a private estate like WHA?
Map Ta Phut is managed by the IEAT (a state agency) and oriented to heavy industry with deep-water port access. Private estates like WHA, Amata City and Hemaraj offer broader sector mixes, service-rich environments and quicker tenant onboarding. BOI eligibility doesn't depend on the estate type — your activity does.
Does EECi inside Rayong get extra BOI privileges?
Yes. EECi-resident R&D projects can access BOI super-deduction incentives for research expenditure on top of standard activity-based privileges, subject to BOI approval and EECi-specific eligibility.
How long is the full BOI process for a Rayong project?
Roughly eight to twelve weeks end to end on a complete file: three days for eligibility, one to two weeks for filing, one to two weeks until the BOI pitch and around three weeks for promoted company registration, plus two weeks for the Foreign Business Certificate.
What is the minimum capital for a BOI in Rayong?
From THB 1,000,000 for most promoted activities. Higher minimums apply to several EEC-priority categories. The exact figure depends on the BOI sub-category and is confirmed during the eligibility assessment.
Can a foreign-owned EV company own land in Rayong?
BOI promotion grants permission to own land for the promoted activity, which is an exception to Thailand's foreign land ownership rules. The right activates once the BOI certificate is issued, not at application.
Do BOI visas cover engineers based at the Rayong site?
Yes — BOI's One-Stop Service Centre handles visas and work permits under a streamlined regime for BOI-promoted companies, with relaxed criteria for foreign staff. The ratio between foreign and Thai employees depends on the activity.
Is the U-Tapao aerotropolis active for BOI applications?
Yes. Aviation MRO, aerospace components and air-cargo logistics activities can apply for BOI promotion under the U-Tapao aerotropolis framework, with site eligibility determined by the EEC office.
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