90-day reporting: the routine that catches people out

Thai immigration law requires a foreign national who remains in the Kingdom beyond 90 days to notify their place of residence. The form used is numbered TM47, which is why the obligation is universally called 90-day reporting or simply "doing your 90 days". It exists so that Immigration has a current address for long-stay foreigners, and that is the entire purpose.

It is worth being blunt about what it is not, because the misunderstandings are expensive. It is not a visa renewal. It is not an extension of stay. It does not add a single day to your permission to stay, and filing one on time will not save you if your permitted stay has already expired. Two people can walk into the same office on the same day, one perfectly compliant and one on overstay, and both will have filed their reports correctly.

A retiree with permission to stay until next March may still owe three reports before then. Someone who arrived last week on a year-long visa owes nothing yet. The two systems answer different questions, and an officer checking one will not automatically fix the other.

The rule is written around the length of stay rather than the type of visa, which is why it catches people who assume their particular route is somehow different. If you are in Thailand on a long-stay basis and you have not left the country for more than 90 days, reporting is relevant to you.

Tourists and short-stay visitors rarely encounter it, simply because they leave before the 90 days elapse. Someone extending a tourist stay and quietly passing the 90-day mark does encounter it, often without realising. The notable structural exception is the LTR visa, which uses annual reporting instead.

If you have already filed a report and it was approved, stop counting: your acknowledgement shows the next reporting date and that is your answer. If you have never reported, count forward from the day you last entered Thailand. That entry is the beginning of the continuous stay the rule is concerned with.

What the count does not follow is your visa. Not the date it was issued, not the date it was stamped in, not the date of your last extension. People routinely calculate from an extension date because it feels like a fresh start, and land on a date that has nothing to do with their reporting cycle.

Immigration's published guidance describes the notification being made within 15 days before the due date and up to 7 days after it. In other words there is a fortnight of runway and a week of grace, and there is no advantage in cutting it fine.

The online system is a separate matter. It applies its own rules about when a submission is accepted, and reports circulate of a narrower window there than the one described for counter reporting. We could not confirm the current online window against the official system, so the practical rule is simple: open the portal about two weeks before your date, and let it tell you whether it will take your submission today.

Have your passport, your entry details and your current address in front of you before you start, and make sure what you type matches what Immigration holds exactly. A first report is the most likely to fail online, because there is no previous record to match against — plan for the possibility that your first one happens at a counter.

Whether it arrives as a slip stapled into your passport or a downloaded confirmation, keep it. It is what you show if a later report is questioned, and it carries the next date so you never have to recalculate. Save a photo alongside your passport scans and lease, and put the next date in your calendar the same day with a reminder two weeks ahead.

Read the reason given, correct what is genuinely wrong, and try once more if there is time. If your due date is close, stop and go in person to the office covering your address. A rejected submission is not a report, and a pending one is not either until it is approved.

A new passport deserves its own mention. It is widely reported that the first report after changing passports has to be handled in person or by an authorised person before the online system will recognise you again. We could not confirm that against an official source, but the cautious approach costs you one visit and the optimistic approach can cost you your window.

Missing your window means dealing with Immigration directly, normally in person rather than online. Expect the report to be accepted along with an administrative fine, and expect your reporting cycle to continue from there. The figure usually applied for coming forward voluntarily is 2,000 baht, with a higher amount where a foreigner is found not to have reported rather than turning up to fix it. Those numbers are consistently reported but we could not confirm them on an official page, so treat them as indicative.

None of this is overstay. Overstay means your permission to stay has expired and is penalised per day under a separate provision, with consequences that can reach blacklisting. A late 90-day report while your stay remains valid is an administrative slip. Do not let a forum post convince you the two are the same thing, and do not let a late report drift — repeated lapses attract attention when you next apply for something.

They are separate obligations and completing one does not discharge another. In practice they do touch: an address that has never been notified under TM30 can make counter appointments harder than they need to be, so it is worth having that sorted before you turn up to report. Our TM30 guide covers who files it and what to ask your landlord.

Hua Hin falls under Prachuap Khiri Khan Immigration, which runs a main office in the Hua Hin area alongside a smaller service point handling a limited range of counter services. Reporting is one of the things typically available at the smaller point, which is why most long-term residents here never make the trip to the main office for it.

Service arrangements, locations and opening hours do change, and they have changed recently. Check the office's current information before travelling rather than relying on a guide, including this one. For most retirees in Hua Hin this settles into a quiet rhythm: four reports a year, mostly online, with the paperwork living in the same folder as the annual extension.