Thailand’s Board of Investment has revised its project monitoring schedule, replacing twice-yearly progress reports with quarterly submissions. The first deadline is 31 May 2026. This note sets out what has changed, what the legal instruments say, and what promoted companies should do now.
On 30 March 2026, the Board of Investment published two instruments that together replace the existing bi-annual reporting schedule with a quarterly one. The substantive conditions are set out in BOI Announcement No. 8/2569; the procedural guidelines follow in Announcement No. Por. 5/2569, issued on 20 April 2026. Reports must now be submitted through the BOI’s e-Monitoring system four times per year rather than two.
The obligation applies only during the implementation phase of a promoted project, from the date the promotion certificate is issued until the project obtains an operating licence. Once an operating licence is in hand, this particular report is no longer required.
The new BOI reporting schedule
Reports must be submitted within 60 days of the end of each calendar quarter. The schedule is as follows:
| Reporting quarter | Period covered | Submission deadline |
| Q1 | 1 January – 31 March | 30 May first deadline |
| Q2 | 1 April – 30 June | 29 August |
| Q3 | 1 July – 30 September | 29 November |
| Q4 | 1 October – 31 December | 1 March of the following year/ 29 February in leap year |
Projects that receive a promotion certificate during a quarter do not need to file for that quarter; their first reporting obligation falls in the following quarter. Any conditions in an existing promotion certificate referencing the February and July schedule are automatically superseded.
Key legal instruments
BOI Announcement No. 8/2569 (30 March 2026) sets the conditions for quarterly reporting of actual investment progress. BOI Announcement No. Por. 5/2569 (20 April 2026) prescribes the procedural guidelines for project progress reporting via e-Monitoring. Both are published by the Office of the Board of Investment and are available in Thai on the BOI website at boi.go.th.
The penalty framework
The BOI’s enforcement posture has not changed. What has changed is how quickly non-compliance can be identified and escalated.
Under the previous twice-yearly reporting schedule, two consecutive missed reporting obligations would generally take a full year to occur. Under the new quarterly reporting schedule, the same two consecutive missed-report threshold can be reached within six months.
Failure to submit a quarterly progress report within the prescribed deadline may result in suspension of the rights and privileges under the relevant promotion certificate. In practice, this may also affect BOI-related applications and services, including visa and work permit support for foreign personnel. The suspended status is generally expected to be lifted once the outstanding report is submitted, subject to BOI system processing and officer review.
Failure to submit two consecutive quarterly progress reports without valid justification may result in the BOI considering revocation of the relevant rights and privileges or revocation of the promotion certificate. This may affect corporate income tax exemptions, import duty privileges, and foreign ownership rights granted under the relevant promotion certificate.
For companies holding multiple promotion certificates, each certificate carries its own independent reporting obligation. A company with three active promotion certificates must therefore submit twelve quarterly reports per year, rather than six reports under the previous twice-yearly schedule.
What companies should do now
Confirm e-Monitoring access. Identify who holds credentials for the BOI e-Monitoring system and verify that access is current. If credentials have lapsed or responsible personnel have changed, this needs to be resolved before the deadline.
Update internal compliance calendars. The February and July schedule no longer applies. Any internal calendar, outsourced compliance provider, or project management system referencing those dates should be updated now.
Capture data on an ongoing basis. Progress reports require current data on investment deployment, construction milestones, machinery installation, and employment figures. Companies that aggregate this information only at reporting time face a more compressed and error-prone process under a quarterly cycle.
Brief your service providers. If BOI compliance has been outsourced, confirm that your provider has updated their own workflows to the quarterly schedule. The legal transition is automatic; the operational one is not.
Understanding the Policy Shift
This change does not introduce new substantive obligations for promoted companies, nor does it increase the reporting burden in any qualitative sense. The underlying framework of what must be reported, and the consequences of non-compliance, remains the same. What the BOI has done is tighten the reporting frequency to surface non-compliant projects sooner and remove their promoted status more quickly. Companies that were already filing accurately and on time will find the transition straightforward. The adjustment is principally felt by those who were not.
Primary sources: BOI Announcement No. 8/2569 (30 March 2026); BOI Announcement No. Por. 5/2569 (20 April 2026). Available at boi.go.th.
This article is provided for general information purposes only and does not constitute legal advice. The law and administrative practice described are current as of the date of publication. Specific legal advice should be sought in relation to individual circumstances.
