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Forgot your TDAC? What to do

Short answerYou can still submit the TDAC on arrival, right up until you go through immigration, on tdac.immigration.go.th or at TDAC kiosks at some airports. It is free, but expect delays.

Checked 28 October 2026 by the Arrival Card Finder editorial team against official sources. How we check

Open the official formtdac.immigration.go.th

Forgot your TDAC? Do this

  • Submit it now on your phone at tdac.immigration.go.th. It is free, and you can do it up until you go through immigration.
  • No phone or internet? Suvarnabhumi (BKK), Don Mueang (DMK), Phuket (HKT), Chiang Mai (CNX) and Hat Yai (HDY) airports have WiFi and TDAC kiosks. Kiosks can mean extra delay and queues.
  • Help points at the checkpoints are for exceptional cases only.
  • Didn't get the email or QR code? Tell the immigration officer at the checkpoint.
  • Do not pay a website that offers to submit it for you. Thailand's Ministry of Tourism and Sports says sites asking for payment are not official.

When to submit

Submit within the 3 days before you arrive in Thailand. You can also submit on your arrival day, right up until you go through immigration.

A TDAC is valid for one entry only. You need a new TDAC every time you enter Thailand.

If you need to change your details, you can update them at any time before you travel. Your full name, passport number, nationality and date of birth cannot be changed: if one of these is wrong, submit a new TDAC.

No phone or internet? Some airports have WiFi and TDAC kiosks: Suvarnabhumi (BKK), Don Mueang (DMK), Phuket (HKT), Chiang Mai (CNX) and Hat Yai (HDY). Using a kiosk can mean extra delay and queues, and help points at checkpoints are for exceptional cases only, so submit before you travel if you can.

Common questions

Can I fill in the TDAC on arrival?
Yes, you can complete it right up until you go through immigration. Suvarnabhumi, Don Mueang, Phuket, Chiang Mai and Hat Yai airports have TDAC kiosks, but using them can mean extra delay and queues. Submitting before you travel is quicker.
Can I change my TDAC after submitting it?
You can update your information at any time before you travel. Your full name, passport number, nationality and date of birth cannot be edited. If one of these is wrong, submit a new TDAC.
I renewed my passport after submitting my TDAC. What should I do?
Submit a new TDAC with your new passport details. The official TDAC FAQ says the system "will consider only the most recent submission valid".

Official sources

Every fact on this page comes from these government pages and official travel advice.