Starting May 1, 2025, all foreign nationals entering Thailand by air, land, or sea must complete the new Thailand Digital Arrival Card (TDAC) online at least 3 days (72 hours) before arrival. This replaces the old TM6 paper form. Universal Weather and Aviation, Inc.+1
This requirement applies to tourists, visa-exempt travelers, business visitors, and long-stay visa holders. Failing to complete the TDAC may result in delays at immigration checkpoints.