TDAC FAQ: Thailand Digital Arrival Card questions answered

The Thailand Digital Arrival Card is the online form replacing the paper arrival card. Submit at https://tdac.immigration.go.th/. The official TDAC is free.

Prepare passport details, flight number and arrival date, an address in Thailand, travel purpose, health declaration information and an email address.

No. Complete it in one go. The official FAQ says it takes about 3–5 minutes per person when your information is ready.

Create one: email is how you receive the TDAC.

Yes. TDAC has been mandatory for all non-Thai nationals entering by air, land or sea since 1 May 2025. See TDAC for land and sea arrivals.

Submit within 3 days before arrival, including the arrival date; the official FAQ also describes this as up to 72 hours before entry. The TDAC is valid from submission until arrival and is for one entry only.

Yes. TDAC is for one-time use per entry. Submit a new TDAC every time you enter Thailand.

No. The TDAC is the arrival card and does not extend a visa or the stay stamped in a passport. To stay longer on a 30-day exemption, see how to extend a Thai visa exemption. Land-border visa-exempt entries are normally limited to 2 per calendar year; see border rules and overstay fines.

No. The official FAQ says no reminders or notifications are sent.

The official FAQ says Full Name, Passport Number, Nationality and Date of Birth cannot be edited. Use “Update Arrival Card” for other fields. If a field cannot be updated, submit a new TDAC; the most recent submission is valid.

The most recent submission is valid. See TDAC errors and fixes.

Passport-number discrepancy: the official FAQ lists Passport Number as non-editable, while the 2025.05.00 release notes say passport-number editing was enabled. Follow the FAQ wording and submit a new TDAC if unsure.

Update the card or submit a new one before entry.

A submission can include up to 10 travellers. You may submit for family members, children or group travellers. Tour operators, tour leaders and authorised travel agencies may also submit.

Kiosks and Wi-Fi are provided on arrival. The FAQ lists Suvarnabhumi, Don Mueang, Phuket, Chiang Mai and Hat Yai airports. For kiosk submissions, the QR code is sent by email only; take a photo of the QR code from the kiosk.

Printing is not required: you can show the QR document on a phone. A printed copy is useful if you will not have a device.

If you do not pass through immigration, no TDAC is required. If you leave the airport, a TDAC is required. Technical landings and transit flights do not need one; crew do not need one.

Yes. All non-Thai travellers, including infants and children, need a TDAC when entering Thailand. Parents can submit for them.

For “Http failure response ... 429”, refresh the page and try again.

For “Http failure response ... 0 Unknown Error”, check your internet connection.

Contact the Immigration Officer at the entry checkpoint.

Keep a screenshot of the error and contact airport or immigration staff.

For a 429 error, refresh and try again. For “0 Unknown Error”, check your internet connection. If the website is unavailable, keep a screenshot of the error and contact airport or immigration staff, as the official FAQ advises. See TDAC errors and fixes.

Use “Update Arrival Card” for editable fields. If a field cannot be updated, submit a new TDAC; the latest submission is valid. The official FAQ and release notes disagree on passport-number editing, so submit a new form if unsure. Read the TDAC correction rules and passport-number notice.