TDAC digital arrival card now mandatory for ALL travelers to Thailand

Complete TDAC at tdac.boi.go.th within 72 hours before arrival. The form covers: personal information, travel itinerary, accommodation address. Immigration officers scan your QR code at the counter. Failure to complete in advance means filling it at an airport kiosk — adding 30-60 minutes to arrival. Children and infants also require their own TDAC. The system is free. Beware of fake "TDAC helper" touts at airports who charge fees for filling out the free form.