When can I submit my TDAC?
You can submit the Thailand Digital Arrival Card within 3 days of arriving, counting the arrival day. Arriving on Friday 18 December? The form opens at 00:00 Thailand time on Wednesday 16 December. It is free on the official site, tdac.immigration.go.th. Enter your date below to get your exact time.
Pick your arrival date to see when you can submit.
TDAC in five points
- Everyone who is not Thai fills it in, whether you arrive by air, land or sea.
- It is free. Only use tdac.immigration.go.th. How to spot fake sites.
- Timing: within 3 days of arrival, including the arrival day.
- No printing: save the QR code on your phone.
- It is not a visa. Check your visa-free days separately.
Filling it in for the first time? Read how to fill out the TDAC, field by field.
Landing at Suvarnabhumi? The Airport Rail Link is the quickest way into the city.
What catches people out
You cannot do it early. The form only opens 3 days (up to 72 hours) before you arrive. Try any earlier and the arrival dates in the calendar are greyed out, so you cannot pick them at all. It is not broken; your window has not opened yet.
It is easy to forget. Because you cannot do it when you book, the TDAC slips the mind in the last busy days before a trip. Put a reminder in your calendar for the day it opens; the calculator above makes one for you.
The site struggles at busy times. In the high season the official site can be slow, freeze, or show an error such as "Http failure response". That is one more reason not to leave it to the airport. Wait a few minutes and try again.
Fake sites look like the real one. The government service is free, but scam sites copy its look and charge a fee. Check the address is tdac.immigration.go.th before you type anything. See how to spot fake TDAC sites.
TDAC questions
Is the TDAC free?
Yes. The Thailand Digital Arrival Card is free on the official site, tdac.immigration.go.th. Sites that charge a fee are not the official service.
How many days before arrival can I submit the TDAC?
Within 3 days of arriving, counting the arrival day itself. If you land on Friday 18 December, you can submit from 00:00 Thailand time on Wednesday 16 December.
Can I submit the TDAC on the day I arrive?
Yes. The arrival day is part of the submission window, but submitting before you travel saves time at the airport.
Do I need to print the TDAC?
No. After submitting you can download the document with its QR code, and a copy is sent to your email. Keep it on your phone.
Do transit passengers need a TDAC?
Not if you stay in the international transit area and do not pass through Thai immigration. If you pass immigration, even for one night, you need one.
Do I need a TDAC if I arrive by land or sea?
Yes. All foreigners entering Thailand by air, land or sea must submit a TDAC.
Do Thai citizens need a TDAC?
No. The TDAC is required for non-Thai nationals only.
Can I submit for my family or group?
Yes. One submission can include up to 10 travellers.
Can I change my TDAC after submitting?
You can update most details before you enter Thailand. Your full name, passport number, nationality and date of birth cannot be changed; submit a new card instead, and the latest one is used.
Why can I not choose my arrival date on the TDAC form?
The date picker only lets you choose dates inside the 3-day window, so later dates are greyed out. Come back when the window opens; our calculator above shows when that is.
What should I do if the TDAC site shows "Http failure response" or freezes?
The official site slows down at busy times, especially in the high season. Wait a few minutes and try again, or try outside peak hours. Do not switch to a look-alike site that charges a fee.
Is the TDAC a visa?
No. The TDAC replaces the old paper arrival card (TM6). You still need a visa or visa exemption to enter Thailand.
Sources
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For information only, not legal advice. The immigration officer at your port of entry makes the final decision. ThaiSpend is an independent site and is not affiliated with Thai Immigration or any government agency. Spotted an error? Tell us.