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What is the earliest time to submit the online TM6 form for arrival in Thailand?

Apr 24, 2025
25 days ago
Kelly *******
ORIGINAL POSTER
What is the earliest you can submit the online tm6 please?
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TLDR : Answer Summary
You can submit the online TM6 form a maximum of 72 hours before your arrival in Thailand, starting from April 28th for arrivals on May 1st or later. Comments also discussed concerns about filling in departure information for Non-O retirement visa holders.
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Chris ******
Would be interested to know people's thoughts on completing the departure information for holders of Non-O retirement visas? I'm returning to my apartment in mid May and have flight booked but no idea when I'll be departing next. Just fill in a placeholder the day before the expiry of my current visa in October? Although I'll likely make several more sightseeing trips away before then.
Graham ******
@Chris *****
I don't think the departure date field is mandatory
Chris ******
Cheers Graham. Appreciate your advice.
Mark ********
That’s why my arrival date, kept coming up invalid 😁

I’m not arriving till 16th May.
Tod *********
@Mark *******
then you can apply from May 13 on 🙂
Mark ********
@Tod ********
thanks Tod, I’m sure it will be ok 👍
Mark ********
@Tod ********
thanks, but doesn’t leave much time for any problems, I’m an internet numpty 😁
Tod *********
@Mark *******
it's a pretty easy system, go to the link and look at the fields you have to fill out

it's pretty self explanatory

**************************************
Kelly *******
ORIGINAL POSTER
thanks.
Tod *********
The earliest you can submit one is 72 hours before you arrive <- IF you're arriving ON or AFTER May 1st

The system goes "live" on April 28th (for people arriving May 1st or later)
Lloyd ********
72-0 hours before arrival :-)
Graham ******
@Lloyd *******
arrival ;)
Saw ********
@Graham *****
I’ve seen a post claims that it is 72 hours before.

Can you share the source please?
Graham ******
@Saw *******
So you think that 73 hours before is too soon and 71 hours before is too late? 72 hours before arrival and any time after that is when you complete the DTAC up to the point where you hand over your passport.
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