What we checked, and what remains unclear.
Official sources come first. We also list places where they disagree and questions we couldn't answer, so you know how far to rely on this guide.
Last checked against official sources: See sources
All checked 2 November 2026
Our sources
TDAC portal home page and notice
Immigration Bureau of Thailand
Who must file, the "3 days in advance" notice, the 90-day and work-permit reminders, and the "No Fees Required" page title. Version 2026.10.00 was live.
TDAC FAQ and version history
Immigration Bureau of Thailand
Exemptions, filing window, validity, children, editing, group size, kiosks, help channels, and form changes listed in the release notes.
TDAC user guide
Immigration Bureau of Thailand
The filing and update steps, health prompts, English-only entry, and the automated gate result in the email.
Notice on paid TDAC websites, 17 October 2025
Ministry of Tourism and Sports, Thailand
Registration is free, sites asking for payment are not official, and how to report them.
Thailand Digital Arrival Card
Royal Thai Consulate-General, Dubai
Submission is free of charge. Also says a visa is separate from the card.
Thailand Digital Arrival Card (TDAC)
Royal Thai Embassy, Colombo
Border Pass and no-immigration transit exceptions. Page last updated 23 March 2026.
Thailand Digital Arrival Card (TDAC)
Royal Thai Consulate-General, Hong Kong
Border Pass exception, advice for long-term residents, and help points for travellers without internet.
TDAC required from 1 May 2025
Royal Thai Embassy, London
Start date of 1 May 2025, and that the card is required regardless of visa type.
Official announcement: TDAC
Royal Thai Embassy, Kuala Lumpur
Applies regardless of passport category, and the advice to complete it before departure.
10% of foreign arrivals used fake TDAC sites, 29 March 2026
Khaosod English (news report)
Press report of Immigration Bureau statements on lookalike sites. Not an official source, and we label it that way wherever it appears.
Where official sources differ
Three conflicts
The filing window
"Within 3 days in advance, including the arrival date", "up to 72 hours" and "3 days in advance" all appear on official pages. Our advice works around this by starting three days out and accepting that the form has the final word.
Editing a passport number
The FAQ says you can't. The user guide leaves it off its locked list, and May 2025 release notes say editing was enabled. We tell you to submit a new card if it's wrong.
Exceptions
The FAQ exempts crew but doesn't mention Border Passes. Embassy pages exempt Border Passes and, in one case, say exceptions apply only to that and to no-immigration transit. We show both.
What we couldn't confirm
Open questions
Which dates the form accepts
The form sits behind a human-verification check, which we didn't try to bypass.
Penalties for arriving without a card
We found no official statement of a specific penalty.
Dual nationals
We found no official guidance on those holding Thai and another nationality.
Countries that trigger extra health questions
The guide says the Ministry of Public Health keeps a list, but doesn't publish it in the TDAC manual.
Why someone gets manual processing
The guide doesn't give the criteria.
Exact field labels
Our checklist relies on official text and release notes, not the live form. Portal version when checked: 2026.10.00, released 15 October 2026.