Starting May 1, 2025,

all non-Thai nationals entering Thailand will need to complete the Thailand Digital Arrival Card (TDAC) online before arrival, regardless of their visa status. This digital form, which replaces the paper TM6, aims to streamline and expedite immigration processing. 

Here's a breakdown of the key changes:
Mandatory Digital Arrival Card (TDAC):
All non-Thai travelers, including those with visas and those under the visa exemption scheme, must fill out the TDAC online within 72 hours of arrival.