The 90-day report (form TM47) is a mandatory address notification that every foreigner staying in Thailand on a long-term visa must file with immigration every 90 days. Filing is free, accepted from 15 days before to 7 days after the due date, and late filing carries a 2,000 THB fine.
Who must report — and who must not
Anyone on a long-stay status — retirement or marriage extensions, DTV stays beyond 90 consecutive days, education visas, Non-B workers — files the TM47 every 90 days of continuous presence. Tourists on 60-day entries never reach the threshold. The count restarts every time you leave and re-enter Thailand.
The window and the fine
Immigration accepts reports from 15 days before to 7 days after the due date. Outside that window, the official fine is 2,000 THB (4,000 THB if caught during another procedure). More costly than the fine itself: a record of repeated late reports weighs on your next yearly extension review.
Online, in person, or by proxy
Thailand's online reporting system works — when it accepts your file. In practice it rejects a share of submissions without clear reasons, especially first reports after a new visa or address change. The reliable pattern for the Samui islands:
- Attempt online 15 days before the deadline (leave time for a rejection)
- If rejected, file in person at Samui Immigration in Maenam — or authorise someone to file for you
- First report after a new extension: go in person, it sets a clean baseline
- Keep every receipt slip stapled in your passport — officers ask for the previous one
The rule that actually cancels visas
The 90-day report costs 2,000 THB when forgotten. Leaving Thailand without a re-entry permit costs your entire visa: a yearly retirement or marriage extension is voided the moment you exit without one. The permit costs 1,000 THB (single) or 3,800 THB (multiple) — trivial insurance against restarting a whole retirement process from zero.
This is why deadline tracking is the least glamorous and most valuable service we provide from Koh Samui: report dates monitored, WhatsApp reminders, online filing attempted first, office filing prepared as backup, and a re-entry permit before every trip.
Frequently asked questions
Is the 90-day report the same as extending my visa?
No. The report only confirms your address and is free; it does not extend your permission to stay. Your visa or extension has its own separate expiry date.
Does leaving Thailand reset my 90-day count?
Yes — the count restarts at your next entry. But if you hold a yearly extension, never leave without a re-entry permit, or the extension itself is cancelled.
Can someone file the 90-day report for me?
Yes, in-person filing by an authorised representative is accepted at Samui Immigration, which is how residents of Koh Phangan and Koh Tao commonly handle it.
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