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What is the correct timeline for submitting the TDAC before arriving in Thailand?

Jul 3, 2025
11 days ago
Chris *******
ORIGINAL POSTER
Hi page, question re the TDAC if ok?

Reading the guides on embassy pages etc, states the TDAC must be submitted 3 days pre arrival ?

Is this 3 days the "no later than" or "no earlier than"?

Travelling to arrive 16th Aug, can submit now or way too early for the process ?

Thanks
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TLDR : Answer Summary
The TDAC (Thai Declaration of Arrival Card) must be submitted no earlier than 3 days before your arrival in Thailand. It can be submitted as late as on the day of arrival, even at passport control.
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.agents.co.th)

Bob **********
3 days until arrival
Tony *********
Its within 3 days . You can even do it when you arrive
John **********
No earlier than
Simon *********
14th august to when you arrive
Ellie *******
@Simon ********
, 13th - 16th august in his case
Simon *********
@Ellie ******
count back from day you enter country
Ellie *******
It's "up to 3 days before arrival". You can even submit TDAC in the queue line for passport control at the entry point to Thailand.

You need to wait until the arrival date is selectable on the input calendar on the system. Wait for one month+.
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