Featured Summary: The TDAC collects 10 key personal data fields: full name, passport number, date of birth, nationality, gender, occupation, country of residence, phone number, email address, and purpose of visit. All fields are mandatory, and personal details cannot be edited after submission.
This guide is for informational purposes only and is not affiliated with the Royal Thai Government. For the official portal, visit the Thailand Digital Arrival Card website at tdac.immigration.go.th. Information verified on 21 September 2026.
The TDAC Thailand personal data form has 10 mandatory fields. These include your full name, passport number, date of birth, nationality, gender, occupation, country of residence, phone number, email address, and purpose of visit. According to the Thai Immigration Bureau’s official guidelines (see ‘Entry Requirements’ at ), the 10 mandatory fields are strictly enforced. Personal details cannot be edited once the Thailand Digital Arrival Card is submitted, meaning any errors will require a completely new application.
What Personal Data Does the TDAC Form Require?
The 10 mandatory TDAC fields are locked after submission.
Full Name: Transliterate your name exactly as shown in your passport MRZ, including middle names and hyphens. Gender & Occupation: The system provides Male/Female options (no ‘X’ marker). Retirees select ‘Retired’, freelancers select ‘Other’. Contact Details: Format UK phone numbers with +44 (omitting the leading zero). A valid email is crucial for QR code delivery.
Having recently guided my family of four through the TDAC process for a trip from London to Phuket, the most common mistake we encountered was entering the phone number with a leading zero (e.g., 079… instead of +44 79…). Setting up a test submission 72 hours before departure gave us ample time to correct this via the ‘Update Arrival Card’ function.
| Field Name | Mandatory? | Format/Example | Tip for UK Travellers | Editable? |
|---|---|---|---|---|
| Full Name | Yes | Text | Match MRZ exactly | No |
| Passport Number | Yes | Alphanumeric | No spaces | No |
| Date of Birth | Yes | DD/MM/YYYY | Check accuracy | No |
| Nationality | Yes | Dropdown | Select British | No |
| Gender | Yes | Dropdown | Male/Female only | No |
| Occupation | Yes | Dropdown | Pick closest match | No |
| Country of Residence | Yes | Dropdown | Select UK | No |
| Phone | Yes | Numeric | Use +44 format | No |
| Yes | Text | Required for QR | No | |
| Purpose of Visit | Yes | Dropdown | Usually Holiday | No |
Purpose of Visit – Which Category Should You Choose?
This field must match your visa type. If combining a brief business meeting with a vacation, select Holiday for standard visa-exempt stays. Selecting ‘Business’ without a corresponding visa can lead to entry denial.
| Category | When to Choose |
|---|---|
| Holiday | Tourism, leisure, or visiting friends under a standard visa exemption. |
| Business / MICE | Attending corporate meetings, exhibitions, or conferences (requires an appropriate visa). |
| Transit | Passing through immigration clearance for an onward flight. |
Can You Change Personal Details After Submitting the TDAC?
- Travel and accommodation details can be edited any time before arrival
- Update Arrival Card function available for modifications
- Personal data fields are strictly locked after submission
- Any errors in personal data require a completely new TDAC application
To access the update system, travellers must verify their identity using their Nationality and Passport Number. If any personal data fields contain errors, the applicant must submit a completely new TDAC.
| Data Category | Examples | Post-Submission Status |
|---|---|---|
| Personal Data | Name, passport number, date of birth, nationality | Non-editable (requires new submission) |
| Travel Information | Flight number, arrival date, address in Thailand | Editable (via Update Arrival Card) |
TDAC Data Privacy: How Your Personal Information Is Protected
Upon submission, your data flows into secure government servers. The digital TDAC system, launched on 1 May 2025, entirely replaces the outdated paper TM6 cards.
Under Section 24 of the Thai Personal Data Protection Act (PDPA) B.E. 2562 (2019), your data will be processed for immigration control purposes. You have the right to request access to your data by contacting the Data Protection Officer at the Immigration Bureau as per Section 26 of the Act. For consular assistance regarding visas and entry requirements, British expats in Asia often consult the Royal Thai Consulate-General, HK, located at 8/F, Fairmont House, 8 Cotton Tree Drive, Central, Hong Kong.
We verify the information in this article against official government sources and update it whenever there is a change to the TDAC system. This article was last reviewed and updated on 21 September 2026 to reflect the 2026 travel season, including the new features of the THIM app.
Frequently Asked Questions (FAQ)
Is the TDAC form free of charge?
Yes, the TDAC is completely free. If a website asks for payment, it is not the official government portal.
Can I submit a group TDAC application?
Yes, the system allows for group submissions of up to 10 travellers per application, sending all QR codes to a single primary email address.
Is the passport number a mandatory field?
Yes, your passport number is a strictly mandatory field on the TDAC form.
Which nationality should I choose if I have dual citizenship?
You must declare the nationality of the passport you are using to enter Thailand. All personal data fields must perfectly match that specific passport.
Do I need to provide proof of 20,000 baht on the TDAC?
No, there is no field for this financial declaration on the digital arrival card itself, though immigration officers may ask for proof upon arrival.
What languages are supported on the TDAC portal?
The TDAC portal requires all personal data to be entered in English, though the user interface supports multiple languages.
Are emergency contact or marital status required?
No, emergency contact details and marital status are not required on the Thailand Digital Arrival Card.
When is the earliest I can submit my personal data?
You can submit your TDAC application and personal data up to 72 hours (3 days) before your scheduled arrival in Thailand.
Is there a mobile app for TDAC submission?
Yes, the THIM app allows submission and QR storage on a mobile device.
