Thailand Digital Arrival Card: Top 5 Common Mistakes and How to Avoid Them

Don't let simple errors delay your entry into Thailand. Learn the most common mistakes travelers make when filling out the TDAC and how to prevent them.

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Why Avoiding Mistakes on Your TDAC is Crucial

The Thailand Digital Arrival Card (TDAC) has replaced the traditional paper TM6 form, making the entry process more efficient. However, many travelers still make critical errors that can lead to delays, denied entry, or complications at immigration.


Understanding these common mistakes can save you time and stress

  • Faster Immigration Processing: Correct information ensures smooth entry
  • Avoid Entry Delays: Mistakes can cause significant delays at checkpoints
  • Prevent Complications: Errors may require additional verification
  • Ensure Compliance: Proper completion meets all Thai immigration requirements
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Thailand Digital Arrival Card Common Mistakes

Top 5 Most Common TDAC Mistakes

These are the errors that cause the most problems for travelers

Submitting Too Late

Many travelers submit their TDAC less than 72 hours before arrival, causing processing delays.

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Incorrect Passport Details

Typos in passport numbers or names that don't match exactly with travel documents.

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Wrong Flight Information

Entering incorrect flight numbers, arrival dates, or departure details.

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Incomplete Accommodation Details

Providing vague or incorrect accommodation addresses in Thailand.

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Health Declaration Errors

Forgetting to declare recent travel or providing incomplete health information.

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Language and Format Issues

Not filling out the form in English or using incorrect date formats.

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Common Mistakes by Category

Detailed breakdown of the most frequent errors and how to avoid them

Most Common Timing Errors:

  • Submitting too late: TDAC must be submitted within 72 hours before arrival
  • Submitting too early: Applications submitted more than 3 days in advance may be rejected
  • Last-minute changes: Trying to update information within 3 hours of arrival
  • Forgetting to submit: Completing the form but not actually submitting it
How to Avoid: Submit your TDAC 2-3 days before travel. Set a reminder and double-check that you've received the confirmation email.

Critical Personal Data Mistakes:

  • Name discrepancies: Name on TDAC doesn't match passport exactly
  • Passport number errors: Typos in passport number (cannot be changed after submission)
  • Date of birth mistakes: Wrong birth date (cannot be corrected later)
  • Nationality errors: Selecting wrong nationality from dropdown
  • Gender mistakes: Incorrect gender selection
Important: Name, passport number, nationality, and date of birth cannot be updated after submission. You'll need to submit a new TDAC if these are incorrect.

Travel Information Mistakes:

  • Wrong flight number: Entering incorrect or outdated flight details
  • Incorrect arrival date: Wrong date or time zone confusion
  • Wrong airport: Selecting incorrect arrival airport in Thailand
  • Missing connecting flights: Not accounting for layovers or connections
  • Purpose of visit errors: Selecting wrong travel purpose (tourism vs. business)
Pro Tip: Double-check your flight details with your airline confirmation. You can update most travel information before your trip if plans change.

Accommodation Information Mistakes:

  • Incomplete addresses: Missing street numbers, district, or postal codes
  • Wrong hotel names: Typos in hotel or accommodation names
  • Vague locations: Using general areas instead of specific addresses
  • Outdated bookings: Using old reservation details
  • Missing contact information: Not providing phone numbers or email
Solution: Only provide your first night's accommodation. Copy the exact address from your booking confirmation, including district and postal code.

Health Declaration Errors:

  • Incomplete travel history: Not listing all countries visited in past 14 days
  • Missing Yellow Fever vaccination: Not providing certificate when required
  • Symptom declaration errors: Incorrectly reporting health symptoms
  • Vaccination status mistakes: Wrong vaccination dates or types
  • Transit country confusion: Not including countries where you had layovers
Critical: Travelers from Yellow Fever endemic areas must provide valid vaccination certificates. Check the official list of affected countries.

Common Format and Language Mistakes:

  • Non-English entries: All information must be entered in English only
  • Wrong date formats: Using incorrect date format (should be DD/MM/YYYY)
  • Special characters: Using accents or special characters in names
  • Incomplete dropdown selections: Not properly selecting from dropdown menus
  • Case sensitivity issues: Inconsistent capitalization
Remember: Use only English characters, proper date formats, and ensure all dropdown fields are correctly selected. Type the first few letters to find options in dropdown menus.

How to Avoid All These Mistakes

Follow these essential tips to ensure error-free TDAC submission

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Essential Prevention Checklist

Follow this checklist to avoid common TDAC mistakes

  • Have your passport ready for exact details
  • Confirm your flight information with airline
  • Get your accommodation address from booking confirmation
  • List all countries visited in past 14 days
  • Check if you need Yellow Fever vaccination certificate

  • Use English only for all entries
  • Double-check passport number and name spelling
  • Use correct date format (DD/MM/YYYY)
  • Select options from dropdown menus carefully
  • Review everything before submitting

  • Save confirmation email and QR code
  • Print or screenshot for backup
  • Check if you can update information if needed
  • Verify all details one more time
  • Keep documents easily accessible for arrival
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TDAC Prevention Guide

Related Guides and Information

Learn more about the Thailand Digital Arrival Card

What is TDAC?

Learn the basics about Thailand's new digital arrival card system and why it replaced the paper TM6 form.

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Step-by-Step Guide

Complete walkthrough on how to fill out your Thailand Digital Arrival Card correctly from start to finish.

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Who Needs TDAC?

Find out if you need to complete the Thailand Digital Arrival Card and learn about exemptions.

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