24 Questions and Answers About TDAC (Thailand)

The TDAC (Thailand Digital Arrival Card) has been an integral part of Thailand’s entry requirements since its introduction in May 2025. However, many travelers are unsure how to fill out the TDAC correctly and which information is actually required.

To help you prepare for your next trip to Thailand, I have compiled the most important questions about the Thailand Digital Arrival Card in a logical order, guiding you safely through the entire application process.

Basic Information

What does TDAC mean?

Thailand Digital Arrival Card

Many years it was a paper version we had to fill. Now the arrival card for Thailand is digital.

Do I really need to fill this out?

As soon as you enter Thailand and go through immigration, a TDAC is required.

If you remain in the airport transit area and continue your journey abroad without passing through immigration, it is not required.

Does this also apply to Thai citizens?

Thai nationals entering with a Thai passport do not need a TDAC.

I have a DTV (Destination Thailand Visa), do I need the TDAC?

Yes. Everyone entering Thailand needs it, regardless of their visa or residency status.

What if I am flying onward the same day?

Yes, as soon as you go through immigration in Thailand, a TDAC is required.

If you continue your journey on the same day, you do not need to provide accommodation details.

Is TDAC for transit passengers required?

If you go through immigration in Thailand, a TDAC is required. If you stay in the transit area without getting an entry stamp it is not required.

Do children also need the TDAC?

Yes. You can add them to your TDAC as described above using “add other travelers”.

Access and Preparation

Where can I get the TDAC?

The TDAC Thailand official site is https://tdac.immigration.go.th

Is TDAC Thailand free or do I have to pay for the TDAC?

It is completely free. There are websites that offer paid assistance or even scammers who copy the official website to make it look legitimate.

What if I don’t have a computer?

You can complete the entire process on your smartphone.

What if I don’t have a smartphone?

No problem. You can use airport kiosks before you get to immigration. Friendly staff help you to fill in the form. Please have the following ready:

– Passport
– Visa
– Flight number
– Planned departure date + flight number (optional)
– Accommodation address

Can I apply for the TDAC for multiple people?

Yes. On page 3 of the online application, you will find the button “add other travelers”. This allows you to create one document for all travelers.

Timing

When to apply?

Within 1 to 3 days before arrival.

Can I apply for the TDAC one week before arrival?

No, at the earliest 3 days before arrival. You enter the arrival date on the second page. Only four days are available – the current day plus the next three.

How long does it take to receive the TDAC?

The TDAC is issued immediately after you submit all data. You will instantly receive a PDF file with a QR code and it will also be sent by email.

How long is the TDAC valid?

A TDAC is valid for one entry into Thailand only.

Do I need to fill it out again if I leave Thailand short time and return?

Yes. For every entry into Thailand, you must complete a new TDAC.

Filling Out the Form – Specific Fields

Do I need to upload any documents?

No. However, there is one exception: if you have been in a country where yellow fever is a risk, you must provide a health certificate.

What information do I need to complete the TDAC?

– Passport
– Phone number
– Flight ticket or boarding pass
– Address of the first hotel

Tip: On page 3, the accommodation field is initially greyed out and cannot be filled in until the fields above it are completed.

How do I enter a name with special characters like ä, ö, or ü?

It is best to enter it as shown in the machine-readable section of your passport. In that case as “ae, oe, ue”.

What do I enter under “City/State of Residence”?

Enter your federal state. It is better to use the dropdown list as the English names may be unfamiliar.

What does “TDAC Country where you boarded” mean?

This is the airport where you started your journey. For example, USA if you departed from San Francisco or Boston (regardless of any transit stops).

If you had a stopover with an overnight stay, then that country applies. However, this only concerns travelers who actually entered that country — not those who remained in transit within the airport.

(Example: You fly with Emirates via Dubai to Thailand but stay in Dubai for two days to explore the city. In this case, the correct answer to “Country where you boarded” would be: UAE – United Arab Emirates.)

My information from Thai Immigration:
“Thai Immigration has decided to base this on the country of origin. In practice, Immigration is not too concerned about which country you departed from … they mainly need the correct arrival flight for their system entry.”

What should I select for “Mode of transportation”?

Commercial Flight for regular flights

Private Airline if arriving by private jet

What should I enter under “Flight No.”?

Enter the flight number of the last flight that brought you to Thailand.

Example: Flight London – Dubai – Bangkok: The flight number of Dubai – Bangkok

What should I enter for “purpose of travel” if I live in Thailand?

Select “other” and add something like “family” or “retired”.

What address should I provide?

Enter the address of your first accommodation.

How do I enter my hotel address?

Copy it from Google Maps. The province appears before the postal code.

How do I enter another accommodation?

It’s best to start from the bottom. First enter the province, then the district, and then the subdistrict. It’s enough to type the first few letters — the rest will be suggested automatically. The final number is the postal code.

Example:
444 Phaya Thai Rd, Wang Mai, Pathum Wan, Bangkok 10330

In this case: Bangkok → Pathum Wan → Wang Mai → and then enter the address: 444 Phaya Thai Rd.

Do I need to enter return flight details?

No, this is optional.

What should I enter in “Health Declaration”?

List the countries you have visited in the last 2 weeks. Transit does not count unless you left the airport.

Final Steps and Updates

Can I correct my information after submission?

Yes. Use “Update Arrival Card”. However, name, passport number, nationality, and date of birth cannot be changed.

What if my flight is delayed?

You must update your TDAC if your arrival date changes. See next question.

What should I do if I arrive in Thailand a day later due to a flight cancellation or similar issue?

In case of a delay, the TDAC must be updated. This can be done easily online directly on the homepage. Simply click “Update Arrival Card” instead of “Arrival Card.” If you don’t have the opportunity to do this while traveling, you can also update it at the airport using the so-called “kiosk” terminals.

If you still arrive on the originally planned date despite the delay, no update is necessary.

How do I show the TDAC?

As a QR code on your smartphone or printed.

Did you keep count? Yes, it’s more than 24 questions — new ones keep being added.

Do you have a question that hasn’t been answered? Then write it in the comments. I’ll answer all of them as best as I can.

Tips for TDAC

To ensure a smooth entry, you should proactively follow these recommendations:

Use only the official website: To avoid fraud, use only the URL tdac.immigration.go.th.

Pay attention to the time window: Complete the form within the 72-hour window before your arrival — but not earlier.

Double-check critical details: Important information such as your name and passport number cannot be changed after submission, so careful review is essential before sending the form.

Keep proof with you: Save the confirmation with the QR code on your device and, as a precaution, carry a printed copy in case of technical issues.

Prepare for possibledelays: If the form is not completed in advance, waiting times at immigration checkpoints are to be expected.

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This is what the TDAC Form looks like.

Start by visiting the website www.tdac.immigration.go.th.

If you want to create a new TDAC arrival card, select “Arrival Card.”
If you want to correct an existing one, select “Update Arrival Card.”

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