Manufacturing companies holding Thai BOI (Board of Investment) promotion certificates are facing a time-sensitive compliance challenge: the Thai Board of Investment has officially changed its progress reporting system from semi-annually to quarterly, with the first deadline being the end of May 2026. Many companies' internal compliance calendars have not yet kept pace with this change, and missing the reporting deadline could result in the suspension or even revocation of core incentives such as corporate income tax reductions, import tariff exemptions, and foreign ownership rights.

Policy Background: From Semi-annual Reports to Quarterly Reports

On March 30, 2026, the BOI issued Announcement No. 8/2569, officially replacing the previous February and July reporting schedule with a quarterly reporting system. On April 20, 2026, Announcement No. 5/2569 further standardized the operating procedures of the e-Monitoring system.

The reporting obligation applies from the date of issuance of the facilitation certificate until the acquisition of the formal operating license. In other words, all projects still in the "establishment phase," regardless of size, must submit quarterly reports under the new system.

New application schedule overview

The following are the application deadlines starting in 2026 (within 60 days after the end of each quarter; please refer to the BOI e-Monitoring system for the actual deadline):

I. Q1 (January to March): Submitted by the end of May 2026

II. Q2 (April to June): Submitted by the end of August 2026

III. Q3 (July to September): Submit by the end of November 2026

IV. Q4 (October to December): Submit by the end of February 2027

For projects that have just obtained a promotion certificate, if the certificate is approved midway through a quarter, the reporting process will begin in the following quarter, and the current quarter will be exempt from the obligation. Furthermore, if a company holds multiple promotion certificates, each certificate must be reported independently: a company holding three certificates must submit 12 reports annually.

Key Points of e-Monitoring System Operation

Quarterly reports must be submitted through the BOI's e-Monitoring system, and the report typically covers the following aspects:

I. Capital Expenditure Progress : Comparison of Amount Invested and Approved Amount

II. Plant and Equipment Installation Progress : Status of Achievement of Construction Milestones

III. Employee Employment Data : Ratio of Thai Employees to Foreign Employees

IV. Production or Business Commencement Status : Implementation status of all approval conditions.

Pre-operation confirmation items: Confirm the validity of the e-Monitoring account credentials; update system permissions immediately when there are changes in the responsible personnel; and start collecting application materials immediately after the end of each quarter, rather than waiting until the deadline to compile them all at once.

Consequences of violations: Two levels of risk

The consequences of failing to report on time are divided into two levels.

Tier 1: If no declaration is submitted for a single quarter, BOI may suspend all preferential benefits under the promotion certificate, including support for visa and work permit applications for foreign personnel. The actual resumption time depends on the progress of BOI's review.

Second level: If a company fails to file a tax return for two consecutive quarters, the BOI may initiate a revocation process, canceling its corporate income tax exemption, import tariff preferences, and even its special privileges regarding foreign ownership ratios.

The policy intent of the new system is precisely this: under the original semi-annual reporting system, it would take a year to trigger the revocation of the review if two consecutive reports were not filed; under the quarterly reporting system, the same situation can be triggered within six months. Companies with good reporting habits are basically unaffected, but for manufacturers that were previously more lax in their reporting schedules, the risk window has been significantly shortened.

Compliance Action List for Manufacturing Companies

In response to the new regulations, the following are the key points that manufacturers should prioritize confirming:

1. Confirm e-Monitoring account status : Verify the validity of the login credentials and whether the system handover has been completed for personnel changes.

II. Update the internal compliance calendar : The old February and July schedules are no longer valid and must be completely changed to four deadlines.

3. Establish a real-time data collection mechanism : Data such as investment amount, equipment installation, and number of employees should be compiled regularly, rather than being retrospectively collected at the end of each quarter.

IV. Confirm that the external consultant has updated the operating procedures : If BOI compliance matters are outsourced, it is necessary to confirm that the other party has switched to the quarterly reporting schedule.

Thailand's BOI's new quarterly reporting system hasn't changed the core content of the reporting, but rather shortened the reporting interval, allowing the competent authority to identify non-compliance cases more quickly. For companies that have established good reporting habits, this adjustment is simply a calendar update; for manufacturers with a more relaxed reporting schedule, they need to quickly review their internal processes and complete system preparation before the first deadline.

The data on the filing schedule in this article is sourced from BOI Announcement No. 8/2569 (March 30, 2026) and No. Por. 5/2569 (April 20, 2026).

Please refer to the BOI e-Monitoring system and official website announcements for the actual deadline.