The TDAC — Thailand Digital Arrival Card is mandatory for every foreign traveller entering Thailand. For most people, it’s a straightforward process. But every year, thousands of travellers run into problems — not because the form is impossible, but because a small, easily overlooked detail was entered incorrectly.

The official portal, while perfectly functional, requires careful attention to detail. A single inconsistency can be enough to cause delays upon arrival.

TDAC Mistakes That Can Block Your Entry — What Travellers Get Wrong

Based on what we see daily in our processing queue, here are the most common areas where travellers make errors:

Mistake 1 — Passport Information

Your passport number, expiry date and issuing country must match exactly what is written on your document. Not approximately. Not close enough. Exactly. Even a single transposed digit can flag your application.

Mistake 2 — Arrival Date and Flight Details

This seems obvious — but it’s one of the most frequent errors. Travellers confuse departure date with arrival date, or enter the wrong flight number. The Thai immigration system cross-references these details.

Mistake 3 — Accommodation Address

The accommodation field is mandatory and must be complete. A vague entry like ‘Bangkok hotel’ or leaving it partially blank is one of the leading causes of application issues. Full address, hotel name, and city are required.

Mistake 4 — The 72-Hour Window

The TDAC can only be submitted within 72 hours before arrival. Submitting too early means your application will simply not be accepted by the system — with no warning. Many travellers only discover this when it’s too late.

Mistake 5 — Confirmation Lost in Spam

Once submitted, your confirmation QR code is sent by email. It frequently ends up in spam folders. If you don’t have your QR code when you land, you will face delays — regardless of whether you submitted correctly.

These are just the most visible mistakes. Others are more subtle — and often only surface at the immigration counter.

Why TDAC Mistakes Are More Common Than You Think

The official portal is available in English and Thai. The interface, while operational, leaves little room for error correction once a submission is sent. There is no ‘edit’ button after submission. If something is wrong, the process starts again from scratch — inside your 72-hour window.

This is precisely why many travellers choose to delegate the process to specialists who review every field before submission, catch inconsistencies before they become problems, and ensure the QR code lands in your inbox — not your spam folder.

How Our Service Eliminates TDAC Mistakes

When you use our service, your application is:

• Reviewed by our team before submission — every field checked
• Cross-checked against your passport and travel details
• Submitted within the correct window — automatically, on time
• Confirmed to your inbox with your official QR code

If you need it handled correctly the first time, thailandentry.com takes care of it for you — Standard or Emergency service available.

One TDAC Mistake Can Ruin the Start of Your Trip

Thailand is one of the most welcoming destinations in the world. The last thing you want is to arrive at immigration with a problem that could have been avoided. Whether you choose to apply yourself or delegate — take the TDAC seriously. It’s a small step. But it matters.

Safe travels — Thailand is waiting for you.