After receiving BOI Thailand approval, you must: formally accept your promotion certificate, implement your project on the approved timeline, submit quarterly progress reports within 60 days of each quarter end (new requirement from March 30, 2026 under BOI Announcement No. 8/2569), comply with machinery import rules, submit certified payroll documents (PND 1 or PND 1 Kor), report social security contributions, notify BOI before making any material changes, and submit annual operating reports once operations commence. Failure to comply may result in suspension or revocation of your BOI incentives.
Getting BOI Thailand approval is a significant milestone. It unlocks 100% foreign ownership, tax holidays of up to 13 years, import duty exemptions, and streamlined work permits. But the promotion certificate is not a one-time achievement - it comes with an ongoing set of compliance obligations that run for the entire life of your promoted project.Most foreign entrepreneurs focus entirely on getting approved. Far fewer understand what's required after. In 2026, Thailand's BOI significantly tightened its post-approval framework - introducing new quarterly reporting requirements, stricter payroll documentation standards, and extended social security obligations. Here is everything you need to know.
Step 1: Formally Accept Your BOI Thailand Promotion CertificateWhat accepting your BOI Thailand certificate means
Receiving your Investment Promotion Certificate is not the same as accepting it. Once issued, you must formally accept the promotion within the prescribed timeframe. This is the moment you acknowledge the conditions attached to your promotion - and from this point, all compliance obligations begin.Read your certificate carefully before accepting. It specifies your approved business activities, your investment timeline, your machinery list, your employment conditions, and any sector-specific requirements. Activities conducted outside the scope of the certificate are not covered by BOI privileges, and in some cases can trigger Foreign Business Act restrictions.
Your BOI Thailand promotion certificate is the governing document for your entire promoted project. Every compliance obligation flows from it. If anything in the certificate does not match your actual business plan, address it with the BOI before accepting – not after. |
Step 2: Implement Your BOI Thailand Project on Schedule
Investment timelines for BOI Thailand-promoted projects
BOI promotion comes with a defined implementation window. You must meet your minimum investment threshold – machinery, equipment, technology, and facility development – within the timeframe set out in your certificate. Falling behind schedule without BOI approval is one of the most common compliance failures among promoted companies.
- Machinery and equipment must match the approved list and be imported within the approved timeframe
- Construction or facility development must proceed within the schedule set in your certificate
- If you need more time, apply for a timeline extension before the deadline – not after
- Delays that are not approved in advance can result in suspension of your import duty exemptions
- Importing machinery not on your approved list without prior BOI notification is a compliance breach
Step 3: Submit Quarterly Progress Reports - New BOI Thailand Requirement in 2026
The biggest BOI Thailand compliance change of 2026
This is the most significant change to hit BOI Thailand compliance in recent years - and many companies are still catching up.
2026 Update - BOI Announcement No. 8/2569: Effective March 30, 2026, Thailand's BOI replaced its previous semiannual (twice-yearly) reporting system with mandatory quarterly progress reports. This applies to both newly promoted projects and existing promoted projects that remain in the implementation stage. The first report under the new system was due July 30, 2026. Under the new framework, progress reports must be submitted within 60 days of the end of each quarter:
Q1 (Jan-Mar)Due by May 30: Covers January-March progress on investment, machinery, construction, and staffing
Q2 (Apr-Jun)Due by August 29: Covers April-June progress - first report under new system was due July 30, 2026
Q3 (Jul-Sep)Due by November 29: Covers July-September implementation progress
Q4 (Oct-Dec)Due by March 1: Covers October-December progress
Reports are submitted online through the BOI's OSOS system and cover investment progress, machinery procurement status, construction or renovation progress, staffing developments, and operational readiness. Non-compliance with this requirement may result in the suspension of the incentives and privileges granted under your promotion certificate.
If your BOI Thailand project was approved before March 30, 2026 and you were reporting semiannually, you are now required to switch to quarterly reporting. The BOI has not issued automatic waivers for the transition - the obligation applies to all projects currently in the implementation stage.
Step 4: Machinery Import Compliance for BOI Thailand Projects
The machinery list submitted during your BOI Thailand application becomes part of your official promotion approval. Import duty exemptions apply only to machinery on this approved list, imported within the approved timeframe.
- All machinery must appear on your approved list before importing duty-free
- Any additions, replacements, or substitutions must be submitted to BOI for approval before import
- Relocating machinery from one facility to another within your promoted project requires notification
- Retiring or disposing of approved machinery must also be reported
- Importing machinery not on the approved list without prior approval – even equivalent machinery – can invalidate the duty exemption on that import
In practice, machinery plans evolve as projects develop. The BOI allows changes – but they must be approved in advance. Build a process for reviewing your machinery list before any new procurement and keep documentation of all import records aligned with your approved list.
Step 5: Work Permits and Payroll Compliance - New BOI Thailand Standards in 2026
What changed for foreign employees in BOI Thailand companies: The BOI tightened its work permit and payroll compliance standards significantly in 2025 and 2026. These changes affect every BOI Thailand-promoted company that employs foreign nationals.
2026 Update – Certified Payroll Documents: From February 13, 2026, BOI Thailand promoted companies are required to provide a certified copy of PND 1 or PND 1 Kor issued by the Revenue Department for all work permit applications and renewals. Previously accepted uncertified copies are no longer sufficient. Where a third party obtains these documents, a valid Power of Attorney must be in place. |
2025-2026 Update – Minimum Salary Thresholds: The BOI has introduced minimum salary thresholds for foreign nationals employed under BOI promotion. Companies must provide formal employment contracts for all new work permit applications. Work permit positions are approved for a maximum period of two years at a time. |
- Formal employment contracts required for all foreign employees at work permit application stage
- Certified PND 1 or PND 1 Kor from the Revenue Department – required for all new applications and renewals from February 13, 2026
- Monthly social security contribution records must be maintained to support ongoing compliance
- Minimum salary thresholds must be met and documented in payroll records
- Work permit positions are valid for a maximum of two years – renewals require re-submission of all updated documentation
Step 6: Social Security Reporting for BOI Thailand Companies
Extended social security obligations for BOI Thailand promoted businesses
April 9, 2026 – Extended to All BOI Thailand Companies: The requirement to submit social security contribution evidence has been extended to all BOI-promoted companies. Previously this obligation applied primarily to manufacturing businesses. From April 9, 2026, service companies and manufacturing companies with fewer than 30 employees must also submit contribution evidence annually by February 28 each year. |
This means there is now no category of BOI Thailand promoted company that is exempt from social security contribution reporting. Submissions are made through the BOI Single Window system using your most recent contribution data. Falling behind on this creates a cumulative compliance deficit that can affect work permit renewals.
Step 7: Notify BOI Thailand Before Making Any Material Changes
What counts as a material change to your BOI Thailand project: One of the most common and most serious compliance failures is making changes to a promoted project without prior BOI notification. Any material change must be submitted to the BOI for approval before it is implemented.
- Change in business activities – even within the same sector
- Change in shareholding structure – including changes to Thai or foreign ownership percentages
- Change in investment value – increases or decreases beyond approved thresholds
- Change in project location – moving operations to a different province or industrial zone
- Change in production capacity – significant scale-up or scale-down
- Change in the scope of promoted activities – adding products or services outside the original approval
Unauthorised deviations from the approved project jeopardise your promotional status. In serious cases, the BOI can revoke your promotion certificate entirely, which would trigger the recovery of all tax exemptions and import duty waivers you have used. When in doubt, check with your advisor before acting.
Step 8: Annual Operating Report After BOI Thailand Commencement
Ongoing annual reporting for BOI Thailand promoted companies: Once your BOI Thailand project has formally commenced operations – following BOI inspection and approval – the quarterly progress report obligation ends and the annual operating report obligation begins.
Annual operating reports cover your production output, revenue, employment numbers, machinery usage, investment levels, and compliance with all conditions attached to your promotion certificate. They are submitted through the OSOS system and reviewed by the BOI to confirm your promoted status remains valid. The BOI also retains the right to conduct site visits and document audits at any point during the life of your promotion.
Think of your BOI Thailand promotion as a renewable licence rather than a one-time grant. As long as you meet your conditions and file on time, your incentives remain intact and can be extended. The companies that lose their incentives almost always do so because of missed filings or undisclosed changes – not because their business failed to qualify. |
BOI Thailand Post-Approval: Frequently Asked Questions
How often do I need to submit progress reports to BOI Thailand? |
From March 30, 2026, BOI Thailand promoted companies must submit progress reports quarterly – four times per year – within 60 days of the end of each quarter. This replaced the previous semiannual (twice-yearly) system under BOI Announcement No. 8/2569. |
What happens if I miss a BOI Thailand progress report deadline? |
Non-compliance with the quarterly reporting requirement may result in the suspension of the incentives and privileges granted under your BOI promotion certificate. Repeated or serious non-compliance can result in revocation. The BOI does not issue automatic warnings before suspending privileges. |
Can I import machinery not on my approved BOI Thailand list? |
Not without prior BOI approval. The machinery list in your promotion certificate defines what qualifies for import duty exemption. Any additions, substitutions, or replacements must be approved by the BOI before import. Importing unapproved machinery duty-free can invalidate the exemption and create a tax liability. |
Do I need certified payroll documents for BOI Thailand work permit renewals? |
Yes – from February 13, 2026, a certified copy of PND 1 or PND 1 Kor from the Revenue Department is required for all work permit applications and renewals. Uncertified copies are no longer accepted. Arrange Revenue Department appointment letters and Powers of Attorney in advance as processing times can add weeks. |
What changes to my BOI Thailand project require prior BOI approval? |
Any material change – including changes to business activities, shareholding structure, investment value, project location, or production capacity – must be submitted to and approved by the BOI before implementation. Unauthorised changes can result in suspension or revocation of your promotional status. |
When do quarterly reports end for my BOI Thailand project? |
Quarterly progress reports are required from the issuance date of your promotion certificate until your project receives formal approval for commencement of operations. After that, the obligation shifts to annual operating reports. |
Need help managing your BOI Thailand compliance? Act & Align Advisor manages BOI Thailand compliance end-to-end – quarterly progress reports, work permit renewals, payroll documentation, and ongoing certificate management. Based in Bangkok. |
