Avoid These Common Errors on Your TM6 Form for a Hassle-Free Entry

Learn about the most frequent mistakes made on the Thailand Digital Arrival Card and how to avoid them to ensure a smooth immigration process.

Fill Out TDAC Correctly View Requirements

Understanding the Thailand Digital Arrival Card (TDAC)

The Thailand Digital Arrival Card (TDAC) is a mandatory electronic form that all foreign nationals must complete before entering Thailand. Effective from May 1, 2025, this digital system replaces the traditional paper TM6 form and aims to streamline immigration procedures.

The TDAC must be submitted within 72 hours prior to arrival in Thailand, regardless of whether you're entering by air, land, or sea. This pre-arrival requirement is designed to reduce processing times and enhance border security.

Key Facts About TDAC:

  • Mandatory for all foreign nationals entering Thailand
  • Free to complete through official channels
  • Must be submitted 72 hours before arrival
  • Generates a QR code for immigration presentation
Thailand Digital Arrival Card Overview

Most Common Mistakes When Filling Out the TDAC

Avoid these frequent errors to ensure smooth entry into Thailand

Incorrect Personal Information

Mismatched names, wrong passport numbers, or incorrect dates of birth can cause major delays at immigration.

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Wrong Travel Details

Incorrect flight numbers, arrival dates, or transportation modes can lead to processing complications.

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Health Declaration Errors

Missing vaccination certificates or incorrect health information can result in entry denial.

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Accommodation Mistakes

Incomplete or incorrect accommodation addresses can cause unnecessary delays during processing.

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Incorrect Personal Information

One of the most critical mistakes travelers make is entering incorrect personal information that doesn't match their passport exactly. This includes:

  • Name variations: Using nicknames instead of passport names
  • Spelling errors: Typos in names or passport numbers
  • Date format confusion: Using wrong date formats for birth dates
  • Nationality mistakes: Selecting wrong country of citizenship
Important: Personal information like full name, passport number, nationality, and date of birth cannot be updated after submission. If incorrect, you must submit a new TDAC.
Passport Information Accuracy

Timing Mistakes That Can Ruin Your Trip

Understanding the critical timing requirements for TDAC submission

Submitting Too Early or Too Late

The TDAC has a strict 72-hour submission window before your arrival. Many travelers make these timing errors:

  • Applications submitted more than 72 hours before arrival are rejected
  • System automatically blocks early submissions
  • You'll need to resubmit within the correct timeframe

  • Last-minute submissions may not process in time
  • Risk of entry denial if TDAC isn't ready
  • Airport kiosks available but cause significant delays
TDAC Timing Requirements

Technical Errors and How to Avoid Them

Many travelers encounter technical issues that can be easily avoided with proper preparation:

Using Unofficial Websites

One of the most dangerous mistakes is using fake TDAC websites that charge fees for the free service. Always use the official portal:

Official TDAC Website: https://tdac.immigration.go.th

Device Compatibility Issues

  • iPhone users: Often experience dropdown menu problems
  • Mobile browsers: May have functionality issues
  • Recommended: Use desktop or laptop for best experience

Not Saving Confirmation Properly

Always save multiple copies of your TDAC confirmation:

  • Screenshot the QR code
  • Save email confirmation
  • Print a physical copy as backup
Preventing Technical Errors

Health Declaration Mistakes

Critical health information errors that can prevent entry

Yellow Fever Vaccination Requirements

Travelers from Yellow Fever endemic areas must provide vaccination certificates. Common mistakes include:

  • Missing certificates: Not uploading required vaccination proof
  • Expired vaccinations: Using outdated vaccination records
  • Wrong countries: Not knowing if your origin country requires vaccination
Yellow Fever Countries Include: Angola, Brazil, Colombia, Kenya, Nigeria, Peru, Venezuela, and many others in Africa and South America.

Recent Travel History Errors

You must declare all countries visited in the 14 days prior to arrival. Common errors:

  • Forgetting transit countries
  • Incorrect travel dates
  • Missing connecting flight destinations
Health Declaration Requirements

How to Fix Mistakes After Submission

What to do if you discover errors in your TDAC

Most travel and accommodation information can be updated before your trip:

  • Travel details: Flight numbers, arrival dates
  • Accommodation: Hotel addresses, contact information
  • Health declarations: Recent travel history

Use the "Update Arrival Card" option on the official website.

Critical personal information cannot be changed:

  • Full name (as shown on passport)
  • Passport number
  • Nationality/citizenship
  • Date of birth
Solution: Submit a completely new TDAC application with correct information.

Tips for Error-Free TDAC Completion

Follow these expert tips to avoid common mistakes

Double-Check Passport Details

Verify every character matches your passport exactly

Submit at Right Time

Complete within 72 hours of arrival, not earlier

Use Official Website

Only use tdac.immigration.go.th for submissions

Complete Your TDAC Now

Related Information

Explore more about Thailand Digital Arrival Card

How to Fill Out the Thailand Digital Arrival Card

Step-by-step guide to completing your TDAC correctly the first time.

Thailand Digital Arrival Card Requirements

Complete list of documents and information needed for your application.

How to Correct Information on Your Thailand Digital Arrival Card

Learn how to fix mistakes and update your TDAC information.

Thailand Digital Arrival Card FAQ

Answers to frequently asked questions about the TDAC process.