Check when to submit Thailand's digital arrival card (TDAC) before your trip

Is the TDAC the same as a visa?

The TDAC replaces the paper arrival form (TM6) with an online one. Thailand's immigration bureau applied it to every foreign traveler entering from May 1, 2025, and the Korean embassy notice says it must be completed whether or not you hold a visa.

Look up separately whether your trip needs a visa. The TDAC is the step where you hand over your entry details in advance.

How many days ahead can I submit?

The official guidance words the submission window a little differently.

These were checked on October 25, 2026. The embassy notice is the one addressed to Korean travelers, so submit between two days before arrival and the arrival day, which satisfies both statements.

What do I enter, and in what order?

Have your passport, your name, date of birth and nationality, your flight details and arrival date, and your accommodation in Thailand ready. The Korean embassy notice also lists a phone number and email address as items to enter.

1. Press the Arrival Card button on the official site. The language can be switched to Korean at the top right.
2. Upload a passport photo or type the details in English.
3. Enter your flight information and where you will stay in Thailand.
4. If your nationality or a visit to a high-risk disease area in the last 14 days applies, the screen asks extra health questions.
5. If you travel with others, press the add button and repeat the same entries.
6. Review what you entered, add your email address, accept the terms and submit.
7. Download the proof or open the confirmation in your email and keep it.

Even after the passport photo is read, compare the details with the physical passport character by character. You can edit them on the review screen before submitting.

What if a site asks me to pay?

The TDAC is free. The Korean embassy warns that non-official sites can appear at the top of search results, and some of them have people pay several thousand baht as an application fee.

Look for the Thai government domain go.th in the address. The official site has no payment system, so if a payment window opens, stop there and check the address again.

What do I show at the airport?

You show the immigration officer your passport together with the confirmation email. Because the connection can be weak at immigration, the Korean embassy tells travelers to print the email or take a screenshot.

Before you leave the plane, open the saved confirmation on your phone. Keeping proof for your family or companions in one place saves time in the line. The embassy notice was last edited on June 11, 2025, so any later change is not in the material we checked. Open the official TDAC site and the Korean embassy's announcements once more before you depart.