BOI Work Permit (Section 24/25) via Single Window Sec.24/25 WP

Fast-track work permit + Non-B visa for foreign experts in BOI-promoted companies — issued via BOI One Stop Service (OSS) in 3 hours.

Who

Foreign technicians, experts, and executives of BOI-promoted companies

Gov Fee

WP fee THB 3,000/year; visa fee THB 500–10,000 per type

Timeline

Single-day issuance at OSS Chamchuri Square (BOI HQ)

Authority

BOI One Stop Service

Legal Basis

Investment Promotion Act Sec. 24, 25; Foreign Working Act B.E. 2551

Eligibility

Company has BOI promotion
Foreign quota approved (ม.25)
Position description filed

Required Documents

Promotion cert
Position approval (F WP 01)
Foreigner passport + degree
Photo 4x6cm

Procedure

Apply for position approval
Submit WP request at OSS
Receive WP + visa stamp same day
Annual extension

Fee Structure

Service covers position approval drafting, OSS representation, and bundled visa change (TR → Non-B).

Cross-Border Notes

Degree certificates from abroad require notarization + Apostille/MFA legalization + MoJ Thai translation.

Related Services

ILC provides the full chain — application filing, BOI sub-committee representation, OSS, MoJ-certified translation, MFA legalization, Apostille (from 2025), and annual F PM PA 01 reporting.

Post-Service Policy

If a document is rejected due to a defect in our translation or certification, we redo and resubmit at no extra service fee (government fees excluded). This is service responsibility, not a guarantee of BOI / DBD / Immigration discretion.

In-Depth Guide: BOI Work Permit (Section 24/25) via Single Window (Sec.24/25 WP)

BOI Work Permit (Section 24/25) via Single Window is delivered under ILC's Board of Investment (BOI) Promotion — 2025 Strategy practice, combining MoJ-certified translation, MFA legalization, embassy liaison, and Thai government filing under one project manager. Every case is handled by a NAATI-accredited translator, a Thai Notarial Services Attorney, and a dedicated case coordinator.

BOI promotion is Thailand's flagship investment-incentive regime, offering 3–13 years of corporate income tax exemption, import duty relief, 100% foreign ownership, land-ownership rights, and OSOS work-permit fast-tracking. The 2023–2027 strategy prioritises seven target industries: Bio-Circular-Green (BCG), Digital, Advanced Manufacturing, Creative Industries, Vehicles of the Future, Medical & Wellness, and Defence. ILC prepares BOI Category 5 (Digital) and Category 7 (High-Value Services) applications end-to-end, including feasibility, capital plan, technology transfer scoring, and personal-income-tax reduction filings. BOI's 2024 platform overhaul introduced the e-Investment Promotion system, cutting typical approval times from 90 to 40 working days for qualifying digital and services projects.

Why choose ILC for BOI Work Permit (Section 24/25) via Single Window

With more than 15 years of practice, ILC covers every embassy in Bangkok and both MFA offices (Chaengwattana and Chiang Mai). We operate a two-tier QA review and refund the service fee if a document is rejected due to a defect in our translation or certification — government fees and officer discretion excluded.

How BOI Work Permit (Section 24/25) via Single Window is Processed

The workflow below reflects current 2025–2026 practice with the relevant Thai authority and factors in queue seasonality, translation dependencies, and cross-agency handoffs.

1) Pre-submission consultation
Meet with BOI officer to confirm eligibility and shape the promoted activity code.
2) Application preparation
Business plan, financial projections, technology description and employment plan drafted in BOI templates.
3) e-Investment submission
File through the new online platform; expect an initial completeness check within 5 working days.
4) BOI subcommittee review
Technical review by industry subcommittee; average 30–45 working days for Category 5 projects.
5) Approval and acceptance
Promotion certificate issued; company has 6 months to accept and comply with capital and workforce commitments.
6) Post-approval compliance
Annual reporting, machinery import filings, and personal income tax reduction filings.

Documents & Requirements for BOI Work Permit (Section 24/25) via Single Window

The checklist below covers standard files. Complex or corporate matters can add supplementary certificates, board resolutions, or notarised affidavits; ILC brief these during the intake call.

Business plan matching BOI activity code
Financial projections 3-year
Shareholder and technology background
Employment plan (foreign vs Thai)
Machinery and investment list
Environmental impact declaration if applicable

Real-World Use Cases: BOI Work Permit (Section 24/25) via Single Window

Real-world scenarios where clients rely on this service every month, spanning individual, family, and corporate mandates.

SaaS startup

Category 5.10 with 8-year CIT exemption and 100% foreign ownership.

EV assembly plant

Category 4 with 8+3 year CIT exemption and machinery duty waiver.

Medical wellness resort

Category 7 with 3-year CIT exemption and land-ownership right.

Regional HQ (IHQ)

Corporate income tax on offshore income at 10% for 15 years.

Alternative Paths for BOI Work Permit (Section 24/25) via Single Window

Three delivery paths are usually available. We select the option that balances cost, deadline pressure, and destination-authority preferences.

Option	Pros	Cons
BOI A1+ (technology, R&D)	13-year CIT exemption, 100% foreign ownership	Requires R&D expense benchmarking and IP transfer plan
BOI A3 (advanced services)	8-year CIT exemption	Employment and capital thresholds apply
Non-promoted structure	Faster to set up, no ongoing reporting	No tax exemption, foreign ownership capped

FAQs about BOI Work Permit (Section 24/25) via Single Window

คำถามที่พบบ่อย

Is BOI still open to services companies?

Yes. Category 5 (Digital) and Category 7 (High-Value Services) remain highly active in 2025 with fast-track review.

Do BOI companies pay VAT?

Yes. VAT is unaffected by BOI; only corporate income tax on promoted revenue is exempt.

Can we hire foreigners under BOI?

Yes and without the 4:1 ratio. OSOS issues work permits in 5 working days.

Can BOI status be lost?

Yes if promotion conditions (capital, employment, technology) are not maintained; ILC handles annual compliance.

Local Expert Insight

Expert perspective: BOI Work Permit (Section 24/25) via Single Window

“The BOI Work Permit (Section 24/25) via Single Window files we see most often are ones the applicant filed themselves and got rejected for an outdated template or a passport-name mismatch — that's why we audit every document before touching translation.”

กองบรรณาธิการ ILC

Legal Documentation Editorial Team

Cost ladder

Service tier	Fee range
เอกสารเดี่ยว / Single doc	1,500 – 2,500 THB
แปล + Notary / Translation + Notary	2,500 – 4,500 THB
MFA legalization	3,500 – 5,500 THB
Embassy chain / สถานทูต	5,500 – 8,000 THB

Timeline (Day 1 → Day N)

Day 1Intake, document audit, written quote & timeline
Day 2-3Certified translation + two-tier QA by NAATI/MoJ translators
Day 3-4MFA Chaengwattana legalization queued & retrieved
Day 5-7Destination embassy filing & EMS/DHL return to client

Case snapshot (anonymized)

A corporate client (name withheld) needed BOI Work Permit (Section 24/25) via Single Window on a tight embassy deadline. ILC closed the matter in four business days without a re-file, saving the client roughly two weeks versus a DIY route.

Last reviewed: 2026-08-20 · Cross-referenced against MFA Consular practice + Lawyers Council of Thailand

Free quote — LINE @NAATI · Tel 080-5578887

A working guide to Boi Promotion in Thailand

Boi Promotion is one of the pillar services delivered by our firm — a Bangkok legal-language practice operating since 2004 with in-house certified translators, Lawyers Council of Thailand notarial services attorneys, Ministry of Justice court-listed translators, and licensed visa consultants working under one roof. Every Boi Promotion matter is scoped by a senior specialist on LINE Official @NAATI or by email at ilc@thainotary.co.th before any file moves.

How the workflow runs end-to-end

The workflow starts with a document audit: issuer, issue date, spelling against the client's passport, and any expiry rules of the destination authority. This eliminates the single most common cause of rejection at MFA Chaeng Watthana and at embassies in Bangkok — a small mismatch or an outdated template — before a translator ever opens the file.

Who this service is for

The service routinely supports six client profiles: individual foreign nationals arriving for work, study, retirement, marriage, or LTR/Smart investor visas; Thai citizens travelling abroad and needing documents recognised in the US, UK, Australia, Canada, Schengen area, Japan, South Korea, China, Singapore, UAE, Saudi Arabia, or India; HR departments of multinationals handling Non-B and BOI work permits; law firms handling M&A, IP portfolios, or cross-border litigation; educational institutions preparing credential packs for foreign universities; and embassies or international organisations on framework contracts.

Coverage, fees, and turnaround

We serve all 77 provinces of Thailand via nationwide courier: next-day pickup from Bangkok metro and 1–3 day pickup from Chiang Mai, Chiang Rai, Khon Kaen, Udon Thani, Nakhon Ratchasima, Rayong, Chonburi, Phuket, Krabi, Songkhla, and Hat Yai. Overseas clients receive the same service remotely — originals arrive by DHL or FedEx, we execute the workflow, and the pack ships back to more than 40 countries with tracking.

Quality assurance and confidentiality

Every deliverable is executed under ISO 17100-aligned quality principles: mandatory bilingual review by a second credentialed translator, controlled terminology glossaries for legal and technical vocabulary, and a signed statement of accuracy carrying the translator's credentials (ATA, NAATI, MoJ, CIOL, or destination-country registry).

Start your Boi Promotion matter today

Reach ILC on LINE Official @NAATI, email ilc@thainotary.co.th, or phone 080-5578887. Office hours are Monday to Sunday, 08:30 to 20:00 Bangkok time. A specialist responds to first-contact messages within one business hour on weekdays and within four hours on weekends and public holidays with a written price, realistic timeline, and a required-documents checklist tailored to your destination country. There is no charge for the initial consultation, and no obligation to proceed after receiving the quote — ILCearns repeat business by delivering the first Boi Promotion matter cleanly and on time, not by locking clients into open-ended retainers.

Local Expert Insight

Expert perspective: Boi Promotion

“The Boi Promotion files we see most often are ones the applicant filed themselves and got rejected for an outdated template or a passport-name mismatch — that's why we audit every document before touching translation.”

กองบรรณาธิการ ILC

Legal Documentation Editorial Team

Cost ladder

Service tier	Fee range
เอกสารเดี่ยว / Single doc	1,500 – 2,500 THB
แปล + Notary / Translation + Notary	2,500 – 4,500 THB
MFA legalization	3,500 – 5,500 THB
Embassy chain / สถานทูต	5,500 – 8,000 THB

Timeline (Day 1 → Day N)

Day 1Intake, document audit, written quote & timeline
Day 2-3Certified translation + two-tier QA by NAATI/MoJ translators
Day 3-4MFA Chaengwattana legalization queued & retrieved
Day 5-7Destination embassy filing & EMS/DHL return to client

Case snapshot (anonymized)

A corporate client (name withheld) needed Boi Promotion on a tight embassy deadline. ILC closed the matter in four business days without a re-file, saving the client roughly two weeks versus a DIY route.

Last reviewed: 2026-08-20 · Cross-referenced against MFA Consular practice + Lawyers Council of Thailand

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What is BOI Work Permit (Section 24/25) via Single Window?

BOI Work Permit (Section 24/25) via Single Window — Fast-track work permit + Non-B visa for foreign experts in BOI-promoted companies — issued via BOI One Stop Service (OSS) in 3 hours.

Who is this for?

Foreign technicians, experts, and executives of BOI-promoted companies

Fees and timeline?

WP fee THB 3,000/year; visa fee THB 500–10,000 per type; Single-day issuance at OSS Chamchuri Square (BOI HQ)

Legal basis?

Investment Promotion Act Sec. 24, 25; Foreign Working Act B.E. 2551

Issuing authority?

BOI One Stop Service

Required documents?

Promotion cert; Position approval (F WP 01); Foreigner passport + degree; Photo 4x6cm

Procedure steps?

Apply for position approval; Submit WP request at OSS; Receive WP + visa stamp same day; Annual extension

How are fees structured?

Service covers position approval drafting, OSS representation, and bundled visa change (TR → Non-B).

Cross-border notes?

Degree certificates from abroad require notarization + Apostille/MFA legalization + MoJ Thai translation.

Rejection policy?

If rejection is due to a defect on our side, we redo and resubmit at no extra service fee (government fees excluded). BOI / DBD / Immigration discretion not guaranteed.

Go deeper on Corporate and company document certification

Our advisory team has run these certification chains for 15+ years. Two references we keep updated for clients:

Not sure which route applies? Send us the scan — LINE @NAATI · 080-5578887 · ilc@thainotary.co.th

Documents usually required

Freshly issued company affidavit and certificate of registration
Memorandum and articles of association, or the current shareholder list
Board resolution or power of attorney signed by the authorised director
ID or passport copies of the authorised signatories

Common reasons a bundle is rejected

Company affidavits are usually accepted only within a short validity window.
Director names and job titles must match the registered filing exactly.
Spell every name exactly as it appears in the passport, across every document in the same bundle.

Prefer not to handle the chain yourself? Send the scans and we run every step for you, from translation to the final endorsement.

What clients typically use this for

Foreign subsidiary registration
Bank account opening abroad
Tender and contract submissions

An advisor, not only a document processor

Before any work starts, our team assesses how many certification layers your document actually needs, which authorities are involved, and the correct order for the office you will really file with. One step out of order usually means restarting the whole bundle. More than 15 years of cross-border document work means we recognise how each authority rejects files and prevent it up front.

The certification route is matched to the receiving authority before work begins.
Rejection risks are checked, from name spelling to document validity windows.
The filing sequence is planned around the deadline you actually have.

Consult us at LINE @NAATI · 080-5578887 · ilc@thainotary.co.th

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