When the window opens
Within 3 days before you arrive in Thailand, counting the day you arrive.
| You land on | You can submit from |
|---|---|
| Friday | Wednesday |
| Monday | Saturday |
| The 30th of the month | The 28th |
Times are local to the arrival airport. Use the free arrival card countdown to see exactly when yours opens and get a calendar reminder.
What you'll need
- Passport details
- Flight number and arrival date
- Address in Thailand
- Purpose of travel
- Health declaration answers
- An email address to receive the card
Good to know
- You can update a submitted card, except your full name, passport number, nationality and date of birth.
- If you leave the airport during a transit, you need a TDAC.
Questions travellers ask
How early can I submit the TDAC?
Within 3 days before you arrive in Thailand, counting the day you arrive.
Who needs the TDAC?
All non-Thai nationals arriving in Thailand. Exempt: thai nationals; transit passengers who don't pass through immigration.
Is the TDAC free?
Yes, on the official site, tdac.immigration.go.th.
Do children need one?
Every traveller needs one, including babies and children.
Official sources
Last checked 3 October 2026. Rules can change at short notice, so always confirm on the official site before you travel. WayReady is not a government agency.