BOI post-certificate reporting deadlines and what a late one locks

01Nobody misses a report on purpose

Companies that run into trouble after certification are almost never deliberate about it. The path is remarkably uniform, and it nearly always runs through one of these:

• "We are open, so we are done reporting." Opening ends only the quarterly project progress report. The annual operating results report covers every certificate holder, including companies already open and in production. As long as the certificate exists and the privileges are in use, it is filed every year.
• "Nothing shipped this quarter, there is nothing to report." A quarter with no imports and no construction still has to be filed honestly as zero progress. No activity is not the same as no filing.
• Still working off the old calendar. The submission window for the quarterly report used to be 60 days after quarter end; the current rule has tightened it to 30 days. Half the internal preparation time is gone, and the old habit of collecting data at a leisurely pace after quarter end now runs into the deadline. The number itself can also change with new announcements, so it is worth checking the official announcement again before you set the calendar.
• The machinery investment figure in the quarterly report does not match the equipment list. The two are the same underlying numbers. If the equipment list is not updated in time, machinery investment in the quarterly report looks further behind than it really is, which in turn invites questions about project progress.
• Notices go to an old mailbox nobody reads. System notices normally go to the registered contact address. Even if nobody has opened that mailbox in a long time, delivery may still be treated as effective.
• "Finance can pick it up." The two reporting lines use different definitions and different data sources — one needs construction progress, the other needs financial statements and employment data. Hanging both on one person as a side task is the main reason filings get missed.

02What the four tabs answer

Four tabs, for four questions: when to file, what a miss locks, where the data comes from, and who files on which day.

• Reporting obligations master table. The quarterly project progress report and the annual operating results report, plus three deadlines counted from the certificate issue date — the duty-free equipment import window, the 36-month start-of-operations inspection, and first revenue progress — each with its frequency, the stage it applies to, what ends it, and the extension channel.
• Late-filing consequence table. Which report was missed, which privilege locks first, what that means for day-to-day operations, what continued failure leads to, and what remedy window is left. The consequence chain does not vary by report type, so the table does not split by type either.
• Data-source and reconciliation table. Which internal function produces each of the four quarterly items and each of the five parts of the annual report, and what each has to be reconciled against before submission.
• Internal back-scheduling log. Certificate issue date first, then the official deadline, the internal data-due date, the owner, reconciled, filed — four quarters plus the annual milestone laid out in one pass.

03The cost of being late: privileges first, penalties later

This is the part worth remembering: when a report is late or missed, the first thing locked is not your wallet, it is the duty-free import channel. The chain runs roughly like this — one report goes unfiled, the electronic privilege systems are suspended, duty-free release of machinery and raw materials is held up, goods sit at the port unable to move, and visa and work permit processing for foreign experts is affected too. This chain does not distinguish between the quarterly report and the annual one, so do not assume a late quarterly filing is only the engineering side's problem. For a plant still installing equipment and still ramping up output, that hurts more than any fine.

Behind that sits the status itself. Under section 39 of the Investment Promotion Act, continued failure to meet promotion conditions and reporting obligations can lead to suspension or revocation of promotion status, together with clawback of tax benefits already enjoyed. The exposure is not "no more exemption from here on" but "the tax exempted over past years has to be paid back". Clawback is retrospective, and the later it surfaces, the more years there are to make up.

04How to use the sheet

Three actions, and not in a different order:

• Name the owners before you set the dates. The two reporting lines draw on different data sources, so assign them separately and write the assignment into internal procedure — including the box for who watches the system notices.
• Pull each official deadline forward by two to three weeks and make that the internal data-due date. Split "collect the data" and "file" into two separate actions, with reconciliation time in between. Before filling in the log, write the certificate issue date into the notes column: the equipment import window, the 36-month start-of-operations inspection and first revenue are all counted forward from that day.
• Reconcile first, file second. Match the machinery investment figure against the equipment list, and employment data against personal income tax and social security filings, then submit. Changing a figure after it has gone in costs far more explanation than checking it once beforehand.

Separately, update actual progress against plan once a month. Once any line has drifted by more than two months, start the extension assessment rather than waiting until the quarterly report draws a question. The extension or explanation channel differs from deadline to deadline and each has to be handled on its own; the one thing they share is that the request must go in before the deadline passes.

Which lines you actually owe this year, which figures come from which schedule, and whether there are past missed filings to clear first — all of that has to be checked item by item against your certificate conditions, your issue date and your existing books. Start with an obligation review by the CTAC Thailand consultant team, set the filing calendar for the whole year, and then decide who inside the company owns which box.