Welcome to the Thailand Digital Arrival Card (TDAC) Help Center. This page is designed to help travelers understand common TDAC issues, prepare the right information, avoid submission mistakes, check status, update details, and get ready before entering Thailand.

The official TDAC guide says all non-Thai nationals entering Thailand must complete the Thailand Digital Arrival Card online before entry, and travelers are required to submit their arrival card information 3 days in advance of their arrival date in Thailand. 

Button Text:
Apply for TDAC Online
Check TDAC Status
Update TDAC Submission

Important Notice

Thailand Digital Arrival Card (TDAC) is an independent informational and traveler assistance Google Site. This site helps travelers understand TDAC requirements, documents, timing, status checks, updates, and common travel issues.

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 support or assistance fee should be clearly disclosed as a service fee, not as a Thai government fee. 

How Can This Help Center Support You?

This Help Center can guide you with:

• TDAC application preparation 

• Required documents and information 

• Submission timing 

• Status checking 

• Updating submitted TDAC details 

• Missing confirmation email issues 

• Family and group travel 

• Children and infant TDAC guidance 

• Transit passenger questions 

• Common form mistakes 

• Privacy and data safety tips 

TDAC Application Help

Use this section if you are preparing to apply for TDAC for the first time.

Before starting, keep ready:

• Passport details 

• Personal information 

• Travel information 

• Accommodation information in Thailand 

• Health declaration information 

• Active email address 

The official TDAC guide lists passport information, personal information, travel information, accommodation information in Thailand, and health declaration information as required for submission. 

Button Text:
Apply for TDAC Online

Document Preparation Help

Many TDAC mistakes happen because travelers start the form without preparing their details first.

Before applying, check:

• Your passport name matches exactly 

• Passport number is correct 

• Nationality / citizenship is correct 

• Arrival date is confirmed 

• Flight number or transport details are ready 

• First Thailand accommodation address is ready 

• Email address is typed correctly 

• Health declaration details are accurate 

The official FAQ says TDAC requires passport details, flight number and arrival date, address in Thailand, travel purpose, health declaration information, and email for receiving TDAC. 

TDAC Timing Help

TDAC should be submitted within the correct time window before arrival. The official FAQ says the card should be submitted within 3 days in advance of arriving in Thailand, including the date of arrival. 

Best practice:

• Prepare your documents before the 3-day window 

• Submit once the allowed period opens 

• Do not wait until airport check-in 

• Save your confirmation immediately 

• Update details if your travel plan changes 

Button Text:
Check When to Submit TDAC

TDAC Status Check Help

Use status-check help if:

• You submitted TDAC but cannot find confirmation 

• You want to confirm your details 

• You need to check whether your information is correct 

• You used an assistance service and want to check your request 

• You have a reference number or TDAC number 

For official update/search, the TDAC guide says travelers may need:

• TH Digital Arrival Card No. 

• Date of Birth 

• Nationality / Citizenship 

These are used to search submitted TDAC information before updating. 

Button Text:
Check TDAC Status

TDAC Update Help

Use update help if your details changed after submission.

You may need to update TDAC if:

• Your flight changed 

• Your arrival date changed 

• Your hotel changed 

• Your Thailand address changed 

• Your travel route changed 

• Your health declaration information changed 

• You noticed a typing mistake 

The official guide says submitted information can be updated anytime before travel, but some details cannot be updated, including Full Name in Passport, Nationality / Citizenship, and Date of Birth. 

Button Text:
Update TDAC Submission

Missing Confirmation Email Help

If you did not receive your TDAC confirmation email, first check:

• Inbox 

• Spam folder 

• Junk folder 

• Promotions folder 

• Downloads folder 

• Screenshots folder 

• Email spelling used during submission 

• Any message from your assistance provider, if applicable 

Search your email for:

• TDAC 

• Thailand Digital Arrival Card 

• Arrival Card 

• QR code 

• Thailand Immigration 

The official guide says travelers can download the Thailand Digital Arrival Card and can also download or print a copy from the email address provided during submission. 

Family and Group Help

Families and groups should prepare every traveler’s details before starting.

Prepare for each traveler:

• Passport number 

• Full name as shown on passport 

• Date of birth 

• Nationality / citizenship 

• Arrival date 

• Flight or travel details 

• Accommodation address 

• Health declaration details 

The official guide supports both individual and group submission, and group submission allows travelers to enter details for each traveler. 

Children and Infant TDAC Help

Children and infants also need TDAC. Parents or guardians should prepare each child’s passport and travel information carefully.

For each child, check:

• Child’s passport number 

• Child’s full passport name 

• Child’s date of birth 

• Child’s nationality 

• Same or separate travel details 

• Same or separate accommodation address 

• Health declaration details 

The official FAQ states that all travelers, including infants and children, are required to have a TDAC. 

Transit Passenger Help

Transit passengers may or may not need TDAC depending on whether they pass through immigration.

You may not need TDAC if:

• You remain inside the international transit area 

• You do not pass through immigration 

• You do not leave the airport 

You need TDAC if:

• You leave the airport 

• You collect baggage and enter Thailand 

• You pass through immigration 

• You stay overnight outside the transit area 

• You self-transfer and must clear immigration 

The official FAQ says TDAC is not required if the traveler is not passing through immigration, but it is required if the traveler leaves the airport. 

Common TDAC Problems and Solutions

Problem 1: I entered the wrong passport number

Check whether the system allows correction. If the detail cannot be updated, you may need to submit a new corrected TDAC.

Problem 2: My hotel changed

Update your accommodation details before travel.

Problem 3: My flight changed

Update your flight number, arrival date, airport, or travel route before entering Thailand.

Problem 4: I forgot to add my child

Submit or update the correct details for the child before travel.

Problem 5: I cannot find my confirmation email

Check spam, junk, promotions, downloads, and screenshots. Also check whether the email address was entered correctly.

Problem 6: My name or date of birth is wrong

The official guide says full name, nationality/citizenship, and date of birth cannot be updated through the normal update process. If restricted information is wrong, a new corrected submission may be required. 

TDAC Error and Website Access Help

If you face a technical issue while submitting TDAC:

• Check your internet connection 

• Refresh the page and try again 

• Use a different browser 

• Try a stable Wi-Fi or mobile data connection 

• Avoid submitting multiple times too quickly 

• Take a screenshot of the error 

• Try again after some time 

The official FAQ includes troubleshooting guidance for submission errors, including checking internet connection and refreshing the page depending on the error shown. 

Privacy and Data Safety Help

TDAC involves sensitive personal and travel information. Be careful when sharing:

• Passport images 

• Passport number 

• Date of birth 

• Nationality 

• Flight details 

• Hotel address 

• Health declaration information 

• TDAC confirmation or QR code 

Avoid sharing sensitive information through:

• Public comments 

• Unknown WhatsApp groups 

• Random agents 

• Social media pages 

• Unsecured forms 

• Public Wi-Fi without protection 

Use only trusted, secure, and clearly disclosed channels.

Suggested Help Request Form for Google Site

If you add a form to this Google Site, use this structure.

Form Title

Request TDAC Help

Short Description

Use this form if you need help with TDAC preparation, status checking, update guidance, missing confirmation, or common travel information issues.

Recommended Fields

1. Full Name as per Passport
Placeholder:
Enter your full passport name

2. Email Address
Placeholder:
Enter your active email address

3. Type of Help Needed
Dropdown options:

• Apply for TDAC 

• Check TDAC Status 

• Update TDAC Submission 

• Missing Confirmation Email 

• Family or Group TDAC 

• Child or Infant TDAC 

• Transit Passenger Question 

• Document Requirement Question 

• Other Issue 

4. Arrival Date in Thailand
Placeholder:
DD/MM/YYYY

5. Nationality / Citizenship
Placeholder:
Enter nationality as shown on passport

6. Reference Number, if any
Placeholder:
Example: BR-123456

7. Message
Placeholder:
Explain your issue clearly

Button Text:
Submit Help Request

Recommended Auto-Reply Message

You can use this after someone submits a help request:

Thank you for contacting the Thailand Digital Arrival Card (TDAC) Help Center. We have received your request and will review the details provided. Please make sure your passport name, passport number, nationality, arrival date, flight details, and Thailand accommodation address are accurate. If your request is urgent, keep your TDAC confirmation, passport, flight ticket, and hotel booking ready for faster support.

Before Contacting Support, Check This

Before sending a help request, confirm:

• Your passport details are correct 

• Your arrival date is final 

• Your hotel address is complete 

• Your email address is active 

• Your spam and junk folders are checked 

• Your TDAC number is available, if already submitted 

• Your screenshot or error message is ready 

• Your child or family member details are included, if applicable 

This helps support teams understand your issue faster.

Help Center Safety Warning

Travelers should be careful with TDAC-related websites. Use websites that clearly disclose:

• They are independent, if not official 

• The official TDAC system has no government fee 

• Any service fee is separate 

• Privacy policy 

• Data protection policy 

• Refund policy 

• Contact details 

• No guaranteed immigration approval claim 

The official TDAC website states “No Fees,” so travelers should understand the difference between the official government process and any optional independent assistance service. 

FAQs for Help Center Page

What can the TDAC Help Center help with?

The Help Center can help travelers understand TDAC requirements, documents, timing, status checks, updates, missing email issues, family travel, transit rules, and common mistakes.

When should I submit TDAC?

TDAC should be submitted within 3 days before arriving in Thailand, including the arrival date. 

What information do I need for TDAC?

You need passport details, flight number and arrival date, address in Thailand, travel purpose, health declaration information, and email for receiving TDAC. 

Can I update TDAC after submission?

Yes. The official guide says submitted information can be updated anytime before travel. 

What details are needed to update TDAC?

The official update/search process uses TH Digital Arrival Card No., Date of Birth, and Nationality/Citizenship. 

Do children need TDAC?

Yes. All travelers, including infants and children, are required to have TDAC. 

Do transit passengers need TDAC?

Transit passengers do not need TDAC if they do not pass through immigration. If they leave the airport or pass immigration, TDAC is required. 

Is TDAC free?

Yes. The official TDAC website states “No Fees.” Independent assistance fees, if any, should be clearly disclosed separately as service fees.