Thailand Arrival Card 2025 Correction Feature: When to Update vs. When to Resubmit
A change in your travel plans—a cancelled flight, a last-minute hotel swap, or simply a typo during submission—can lead to anxiety about your border documents. Fortunately, the Thailand Arrival Card 2025 (TDAC) system is designed to be flexible.
Unlike some other countries’ systems, the TDAC provides a dedicated “Update Arrival Card” function, allowing travelers to easily correct minor details before they arrive.
Trevalo explains the strict rules governing what information you can correct, which mistakes require a full resubmission, and the exact steps to ensure your TDAC is accurate before you land.
🔑 Section 1: The Critical Difference: Update vs. Resubmit
The ability to fix an error depends entirely on the type of mistake you made. The system divides your information into two categories: Core Details (Unchangeable) and Travel Details (Updatable).
🛑 Unchangeable Core Details (Require Resubmission)
If you made a mistake on any of these fundamental details, you CANNOT use the “Update” function. You must submit a brand new TDAC application.
| Detail | Reason for Unchangeable Status |
| Full Name (in Passport) | Used for identity verification against your travel document. |
| Passport Number | The primary identifier linked to your submission record. |
| Nationality/Citizenship | Affects visa exemption status and immigration requirements. |
| Date of Birth | Key biographical data used for cross-referencing records. |
ACTION: If any of these are wrong, immediately submit a NEW Thailand Arrival Card TDAC using the correct details. The Thai Immigration system will automatically recognize the most recent valid submission for your passport number, rendering the incorrect one obsolete.
✅ Updatable Travel Details (Use the “Update” Function)
If your error falls into one of these categories, you can use the system’s “Update Arrival Card” feature.
- Accommodation Address: Hotel name, street address, province, etc.
- Arrival Flight/Vehicle Number: Changes due to flight cancellations or re-bookings.
- Arrival Date: Minor date shifts (you must remain within the 3-day submission window).
- Purpose of Visit (e.g., changing from Tourism to Business).
- Email Address or Phone Number.
- Health Declaration (if your health status changes).
🛠 Section 2: Step-by-Step Guide to Updating Your Thailand Arrival Card 2025
If your mistake involves one of the Updatable Travel Details, follow this simple process:
Step 1: Access the TDAC Portal
- Go to the official Thailand Immigration TDAC website (tdac.immigration.go.th).
- Click the “Update Arrival Card” button.
Step 2: Search for Your Existing Submission
To retrieve your record, you must provide your unique Thailand Arrival Card TDAC Confirmation Number (received via email) and core personal data for security verification:
| Required Search Information | Where to Find It |
| TH Digital Arrival Card No. | Found on your TDAC confirmation email/PDF. |
| Date of Birth | Your date of birth. |
| Nationality/Citizenship | Your nationality as listed on your passport. |
- Click “Search.”
Step 3: Correct and Review Your Information
- The system will pull up your submitted form. You will be able to navigate to the sections containing the errors (e.g., Accommodation or Trip Details).
- Edit the necessary fields. For example, delete the old hotel address and input the new one.
- Click “Review” to see a full preview of the corrected information. Use the “Previous” button if you need to make further adjustments.
Step 4: Final Submission and Confirmation
- Confirm your email address (to receive the updated document).
- Check the box to agree to the terms, and click “Submit.”
- You will receive a new TDAC confirmation email and a new QR code reflecting the updated information. Discard the old QR code and use only the new one for check-in and immigration.
💡 Section 3: TDAC Error Management Pro-Tips
Pro-Tip 1: Always Use the Latest QR Code
If you submit multiple forms (due to core errors) or use the “Update” function, you will have several QR codes. Thai Immigration will only accept the TDAC linked to the most recent valid entry. Always delete or discard previous versions to avoid confusion at the counter.
Pro-Tip 2: Same-Day Arrival Changes
- If your flight is cancelled on the day of travel, requiring you to change terminals or take a new flight, your TDAC may be inaccurate.
- Action: Try to update your form immediately. If the system blocks the update due to proximity to arrival, do not panic. Proceed to the immigration counter and politely inform the officer of the flight change. They can manually override or correct the details in the system.
Pro-Tip 3: Check-In Compliance
Always aim to complete your TDAC update before you check in for your flight. Some airlines may require proof of the TDAC (or the related QR code) to issue your boarding pass, and having the wrong flight number could cause delays at your departure airport.