If your travel details change after submitting the Thailand Digital Arrival Card (TDAC), you may need to update your submitted information before entering Thailand. This can happen when your flight changes, hotel changes, arrival date changes, or you notice an error in your submitted details.

The official TDAC guide says submitted information can be updated anytime before travel. The update process asks travelers to click “Update Arrival Card”, enter required search information, review the details, edit information as needed, submit again, and download the updated Thailand Digital Arrival Card. 

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Important Notice

Thailand Digital Arrival Card (TDAC) is an independent informational and traveler assistance Google Site. This site helps travelers understand TDAC update steps, correction rules, required details, and common mistakes before entering Thailand.

This site is not the official Thai Immigration website, not a government authority, and not affiliated with Thai Immigration, any embassy, or any government department.

The official TDAC website states “No Fees.” Any independent service fee should be clearly disclosed as an assistance, review, correction-support, or optional travel-service fee — not as a Thai government fee. 

Quick Answer: Can You Update TDAC After Submission?

Yes. You can update submitted TDAC information before travel. According to the official TDAC guide, travelers can update the submitted information anytime before travel. 

You may need to update your TDAC if:

• Your flight changed 

• Your hotel changed 

• Your arrival date changed 

• Your Thailand address changed 

• Your travel route changed 

• Your health declaration details changed 

• Your email address needs correction 

• You noticed a typing mistake 

• Your travel plan changed before entering Thailand 

What Details Are Needed to Update TDAC?

To search and update your submitted TDAC information, the official guide says you need:

• TH Digital Arrival Card No. 

• Date of Birth 

• Nationality / Citizenship 

After entering these details, travelers click Search, confirm the information, edit details as needed, review the form, enter email, agree to terms, submit, and download the updated TDAC. 

Step-by-Step TDAC Update Process

Step 1: Open the Update Arrival Card Option

Start by choosing the Update Arrival Card option on the official TDAC system or follow your support provider’s update process if you used an assistance service.

Make sure you are using a trusted and secure channel before entering personal or passport information.

Step 2: Enter Required Search Details

To retrieve your submitted TDAC, you may need to enter your:

• TH Digital Arrival Card No. 

• Date of birth 

• Nationality / citizenship 

These details help identify your submitted record before making changes. 

Step 3: Review Your Current TDAC Details

After retrieving your TDAC, review all details carefully before editing.

Check:

• Name 

• Passport number 

• Nationality 

• Date of birth 

• Arrival date 

• Flight or transport details 

• Thailand address 

• Email address 

• Health declaration information 

Do not rush this step. Review the entire form, not only the field you want to change.

Step 4: Edit the Information That Needs Correction

Update the incorrect or changed details carefully. For example, if your hotel changed, enter the new hotel name and address. If your flight changed, enter the updated flight number and arrival details.

Common details travelers update include:

• Flight number 

• Arrival date 

• Arrival airport 

• Hotel name 

• Accommodation address 

• Travel route 

• Contact email 

• Health declaration details 

Step 5: Review Again Before Submitting

Before submitting the update, check everything again. The official TDAC guide says travelers should verify the accuracy of all information before submitting the updated form. 

Check:

• Updated information is correct 

• Passport details are still accurate 

• Arrival details match your latest ticket 

• Hotel address is complete 

• Email address is active 

• Health declaration details are truthful 

• Family or group traveler details are correct 

Step 6: Submit the Updated TDAC

After review, submit the updated information. The system may ask you to enter your email address again, agree to terms and conditions, and then submit the updated form. 

Step 7: Download the Updated TDAC

After submitting the update, download your updated Thailand Digital Arrival Card. Save it on your phone and keep it available during travel.

Best practice:

• Download the updated document 

• Save the email confirmation 

• Take a screenshot 

• Keep a printed backup, if possible 

• Delete or avoid using older versions if they are no longer accurate 

What Details Cannot Be Updated?

Some key identity details may not be editable through the normal update process. The official TDAC guide says travelers will not be able to update the following information:

• Full Name in Passport 

• Nationality / Citizenship 

• Date of Birth 

The official FAQ also says incorrect information can be updated except for Full Name, Passport Number, Nationality, and Date of Birth; if the information cannot be updated, the recommendation is to submit a new form with correct details, and the latest valid submission will be used. 

What If You Made a Mistake in Your Name or Date of Birth?

If you made a mistake in a field that cannot be updated, such as full name, nationality, or date of birth, you may need to submit a new TDAC form with correct details. The official FAQ says if the information cannot be updated, travelers should submit a new form with the correct details, and the most recent valid submission will be used. 

Before submitting a new form, carefully verify:

• Passport name 

• Passport number 

• Nationality 

• Date of birth 

• Arrival date 

• Email address 

• Hotel address 

What If Your Flight Changes?

If your flight changes before entering Thailand, update your TDAC information or submit a new form if needed. The official FAQ says your submission must be accurate and complete before entry, and if anything needs correction, you can update or submit a new form before entry. 

Update if:

• Flight number changed 

• Arrival date changed 

• Arrival airport changed 

• Travel route changed 

• Connecting flight changed 

• You changed from air arrival to land or sea arrival 

What If Your Hotel Changes?

If your first accommodation in Thailand changes, update your TDAC address details before arrival. Your Thailand address should reflect where you will stay after entering the country.

Update if:

• Hotel changed 

• City changed 

• First-night stay changed 

• You changed from hotel to private residence 

• You changed from Bangkok to Pattaya, Phuket, Chiang Mai, or another destination 

• Your address was incomplete in the first submission 

Accommodation information is part of TDAC submission details, so keep it accurate.

What If Your Arrival Date Changes?

If your arrival date changes, update TDAC before travel. TDAC timing depends on your expected arrival date, and the official FAQ says TDAC is valid for one-time use for the expected arrival date indicated. A new TDAC is required every time you enter Thailand. 

Update or submit again if:

• Your arrival date moved forward 

• Your arrival date was delayed 

• Your trip was postponed 

• You missed your original flight 

• You are entering Thailand on a new date 

Updating TDAC for Families and Groups

If you submitted TDAC for family or group travelers, check whether the update affects one person or the whole group.

Update carefully if:

• One traveler’s flight changed 

• One child was missing from the submission 

• Hotel details changed for the full family 

• A traveler canceled the trip 

• A traveler’s health declaration details changed 

• Group arrival details changed 

The official FAQ says a maximum of 10 entries can be submitted per family/group submission. 

Can You Submit TDAC Multiple Times?

Yes. The official FAQ says TDAC can be submitted multiple times with correct information, and the system will consider the most recently updated entry valid. 

This is useful if:

• You made a mistake that cannot be updated 

• Your travel details changed significantly 

• You need to submit corrected information 

• Your earlier submission is no longer accurate 

Always keep the latest confirmation saved for travel.

Do You Need to Print the Updated TDAC?

Printing is not mandatory, but it is useful as a backup. The official FAQ says travelers do not have to print it and can show the downloaded document with QR code on a phone or device, but printing a copy is a good idea if you do not have a device with you. 

Best practice:

• Save the updated TDAC on your phone 

• Take a screenshot 

• Download the PDF, if available 

• Print a backup copy 

• Use the latest updated version only 

Common TDAC Update Mistakes

Avoid these mistakes:

• Updating only one field and not reviewing the full form 

• Using old hotel details 

• Forgetting to save the updated confirmation 

• Entering the wrong arrival date again 

• Using a different nationality format from passport 

• Forgetting children or group travelers 

• Thinking TDAC update is the same as visa correction 

• Waiting until the immigration counter 

• Sharing passport details through unsafe channels 

• Using an unofficial site without checking disclosure 

TDAC Update Checklist

Before submitting an update, confirm:

• I have my TH Digital Arrival Card No. 

• My date of birth is correct 

• My nationality / citizenship is correct 

• I know exactly what needs to be updated 

• My flight details are current 

• My hotel or Thailand address is current 

• My arrival date is correct 

• My email address is active 

• My health declaration details are accurate 

• I have reviewed all details before submitting 

• I will save the updated confirmation after submission 

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Update TDAC Submission

Privacy and Data Safety Note

TDAC update support may involve passport, travel, accommodation, and health declaration details. Travelers should only submit sensitive information through secure and trusted channels.

Avoid sharing sensitive information through:

• Public comments 

• Unverified social media pages 

• Random WhatsApp groups 

• Unknown agents 

• Unsecured websites 

• Public Wi-Fi without protection 

Use clear, secure, and trusted communication channels for any TDAC update request.

Important Safety Warning

Travelers should be careful when using TDAC-related websites. Thailand’s Immigration Bureau has warned travelers about fraudulent websites falsely offering TDAC services for a fee while emphasizing that the official TDAC process is free through official government channels.

Before using any independent TDAC assistance service, check:

• Clear disclaimer 

• Clear service fee disclosure 

• Privacy policy 

• Data protection policy 

• Contact information 

• Secure form handling 

• No false government branding 

• No guaranteed immigration approval claim 

FAQs for Update TDAC Submission Page

Can I update TDAC after submission?

Yes. The official TDAC guide says you can update submitted information anytime before travel. 

What do I need to update my TDAC?

The official update process asks for your TH Digital Arrival Card No., Date of Birth, and Nationality/Citizenship. 

Can I update my name on TDAC?

The official guide says full name in passport cannot be updated through the normal update process. If it cannot be updated, the official FAQ recommends submitting a new form with correct details. 

Can I update my nationality or date of birth?

The official guide says nationality/citizenship and date of birth cannot be updated through the normal update process. 

Can I update my passport number?

The official FAQ says incorrect information can be updated except for full name, passport number, nationality, and date of birth; if the information cannot be updated, submit a new form with correct details. 

What should I do if my flight or hotel changes?

Update your TDAC or submit a new form before entering Thailand. The official FAQ says your submission must be accurate and complete before entry. 

Can I submit TDAC again?

Yes. The official FAQ says TDAC can be submitted multiple times with correct information, and the latest valid submission will be used. 

Do I need to print the updated TDAC?

No, printing is not mandatory. You can show the downloaded document with QR code on your phone, but a printed backup can be useful.