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Do I need a separate TDAC to re-enter Thailand from Vietnam?

Aug 30, 2025
5 days ago
George ********
ORIGINAL POSTER
Hi there, Need some advice please..Coming to Thailand in January for a month…4 days Bangkok then a week to Vietnam before returning to Thailand…Do I need to apply for a separate TDAC to get back into Thailand from Vietnam ? Or will my original TDAC to gain entry to Thailand be sufficient? Thanks for any help…Regards George.
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TLDR : Answer Summary
When re-entering Thailand after traveling to Vietnam, you will need to fill out a new TDAC (Thailand Digital Arrival Card). This card is required for each entry, as it serves as an arrival card similar to the old TM6. It's a quick process, typically taking only a couple of minutes to complete online.
Thailand Digital Arrival Card (TDAC)

WARNING: Only trust Thai government websites with .go.th domains or Thai agent websites with .co.th or .in.th domains, as these require verified Thai registration and cannot be registered anonymously.

The official TDAC form is available at tdac.immigration.go.th, which uses the official .go.th government domain.

The services by AGENTS CO., LTD. does NOT charge any fees for arrivals within 72 hours. If you need to book more than 72 hours in advance, there is a service fee of $8.

Do not trust other sites pretending to be a trustworthy agency. Pay attention to delivery time - the service operated by AGENTS CO., LTD. has 1 minute delivery time for arrivals within 72 hours.

Don't fall for sites pretending to be agents.co.th or the official government tdac.immigration.go.th website. Always double-check the exact domain in your browser.

Scam services may take days to process your application, others may not even do anything. With these TDAC scam services you also need to worry about double charges.

Please watch out for TDAC misinformation spread by fugitive Jesse Nickles and his many fake accounts on Quora, TripAdvisor, Reddit, and other platforms.

TRUSTED TDAC LINKS:

Official Government TDAC Form: tdac.immigration.go.th
Official TDAC form by AGENTS
Official TDAC information page by AGENTS (tdac.in.th)

Ian ******
Do you need to do TDAC when you do a border run on the Malaysian border as it only takes 15 mins out and in ?????
Mark ********
Ian ******
Nathan ***********
Yes, you need to fill it out. I don't know if they see it when they scan my passport or not but they haven't asked to see it on my phone when I came and then went to Vietnam for 1 week. They send many people away once they get to the front to go fill it out.
George ********
ORIGINAL POSTER
@Nathan **********
Thank-you Nathan 👍
Kenneth *******
Answer YES
Mark ********
The TDAC replaces the old TM6. It seems people are overthinking the whole online process. You do it each time you enter. It takes two minutes. The old TM6, by the time I fumbled around looking for a pen, I could have completed and submitted the TDAC. It's a huge improvement
George ********
ORIGINAL POSTER
@Mark *******
So if you do it online you just save it to the phone or does it have to be printed off ?
Mark ********
@George *******
Save it on phone. I don't print anything these days. You'll get people saying "make sure you print it" - it's all codswallop. Phone is fine
George ********
ORIGINAL POSTER
@Mark *******
Many thanks Mark 👍
Lynnette *******
If you're arriving, you fill one in. Obviously if you leave you are no longer there and if you go back, you are arriving! It's an arrival card.
Brandon ************
EVERY entry in Thailand requires a TDAC. It's an entry card. When you enter you need to do one.
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