A re-entry permit lets you exit Thailand and return without throwing away the permission-to-stay you already built through extensions. It is form TM.8, separate from TM.7 extensions. Non-Immigrant B, O, ED, and many other long-stay categories need it before international travel unless a newer rule specific to your programme says otherwise. Tourist entries do not use this file the same way. Ground your category first in apply for a residence permit.
What happens if you leave without TM.8?
When you cross an exit checkpoint on a Non-Immigrant stay without a valid re-entry permit, Immigration typically cancels the unused days on your extension. You are not guaranteed to walk back in on the old stamp. You may need a fresh visa from an embassy or the Thai e-Visa system, then start evidence gathering again. That reset hurts if you just finished an annual extend your stay or renew long-stay permission cycle.
BOI One Stop Service and some privilege programmes describe TM.8 steps for promoted companies, but the logic matches mainstream Immigration: permission to stay pauses or ends at departure unless TM.8 says you may return.
Where do you apply and which type should you pick?
Apply at the Immigration office serving your address or at an airport Immigration desk before departure when that desk is open and staffed for TM.8. Bring passport, photos if requested, and the fee. Officers stamp the re-entry permit into the passport and note validity.
A single re-entry covers one return trip before you must extend again or apply for a new permit. A multiple re-entry suits frequent regional travel for work or family. Published fee tables show the multiple option at roughly 3,800 baht versus about 1,000 baht for a single. Choose multiple when the savings beat repeated single applications within the same permission period.
Apply before your permission-to-stay expires. TM.8 does not fix an already expired stamp. Clear overstay issues at Immigration before you pay for re-entry.
How does travel interact with TM30 and 90-day reporting?
Leaving Thailand ends the continuous-stay count for TM47 (the 90-day notification). After you re-enter, a new 90-day cycle starts from the entry date. Plan the next ninety-day report from that stamp, not from the calendar you used before the trip.
Keep TM30 and address records aligned with where you will land after return. Hosts must report accommodation within the usual deadline when you move: paperwork after moving.
Common misconceptions
One myth is that a valid visa sticker in the passport automatically survives any departure. Non-Immigrant extensions of stay usually need TM.8 unless Immigration issued a different re-entry endorsement.
Another myth is that a re-entry permit replaces TM.7. TM.8 only preserves stay across travel; it does not extend the expiry date.
Assuming airport check-in staff will warn you is risky. The exit officer enforces the rule at the border, not the airline agent at the counter.
Summary
Get a TM.8 re-entry permit before leaving Thailand on Non-Immigrant stay so your permission to stay remains valid when you return. Pick single or multiple based on travel plans, file at Immigration or an eligible airport desk, and reset your 90-day reporting clock after re-entry.
Sources
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