Thailand has introduced a digital arrival card called TDAC (Thai Digital Arrival Card) since May 1, 2025.

This will replace the previously used paper-based arrival card. The goal is to simplify, modernize, and speed up the entry process.
Foreign tourists are required to enter and submit their information digitally before entering the country, so that their data can be registered in advance and uploaded into the system.
The Digital Arrival Card must be completed within 3 days/72 hours before arrival. Personal details (name, passport number, etc.), as well as travel information (flight number) and accommodation details (hotel/host address), will be requested.
Travelers who fail to submit the TDAC within the stipulated time may face delays at immigration or risk being denied entry. It is strongly advised to ensure all personal, travel, and accommodation details are accurately filled out during the submission process. The TDAC can be accessed and updated through the official Thai immigration website.