TDAC vs. visa and visa on arrival: what is the difference?
The Thailand Digital Arrival Card is sometimes confused with a visa. They are different instruments with different purposes. This article explains how the TDAC, a Thai visa and a visa on arrival relate to each other.
Three different instruments
Travel into Thailand can involve up to three separate administrative concepts:
- Permission to enter the country, in the form of a visa, visa exemption or visa on arrival.
- The Thailand Digital Arrival Card, a declaration submitted before crossing the border.
- The immigration stamp placed in the passport on arrival, which formalises the period of stay.
Each of these plays a distinct role and none of them replaces the others.
What a visa is
A visa is a formal authorisation issued by a Thai embassy, consulate or designated body. It indicates that a traveller may seek entry to Thailand for a specific purpose and during a specific period. Common categories include tourist visas, education visas, business visas and various long-stay visas. A visa is normally requested in advance and may involve fees, supporting documents and an interview.
What visa exemption is
Citizens of many countries can enter Thailand for short stays without applying for a visa in advance. This is known as a visa exemption. It is granted on arrival, subject to the standard immigration checks, and is intended primarily for tourism and short visits. The list of eligible nationalities and the maximum stay are set by the Thai authorities and may change over time.
What a visa on arrival is
A visa on arrival is a separate scheme for nationals of certain countries that are not eligible for visa exemption but can still obtain a short-stay visa at specific border checkpoints. It is issued at the airport or land crossing, often subject to a fee, and is typically limited to a short period.
Where the TDAC fits in
The TDAC does not replace any of the above. Instead, it sits alongside them:
- A traveller with a tourist visa still submits a TDAC.
- A traveller using visa exemption still submits a TDAC.
- A traveller using a visa on arrival still submits a TDAC.
In other words, the question 'do I need a visa?' is separate from the question 'do I need to submit a TDAC?'. The answer to the second question is, for most foreign nationals, yes.
Practical examples
To illustrate the distinction, consider three travellers arriving for a one-week holiday:
- A traveller from a visa-exempt country enters under visa exemption and submits a TDAC before arrival.
- A traveller from a country that requires a visa applies for a tourist visa in advance and also submits a TDAC.
- A traveller eligible for visa on arrival obtains the visa at the airport and likewise submits a TDAC before crossing the border.
In all three cases, the immigration officer reviews the visa or exemption status, verifies the TDAC and ultimately decides whether to admit the traveller.
Related articles
- What is the Thailand Digital Arrival Card and who needs it?An overview of the Thailand Digital Arrival Card (TDAC), its purpose, the travellers it applies to and the role it plays at the Thai border.
- Entering Thailand: immigration process and what to expectA neutral walk-through of what travellers can expect when entering Thailand, from disembarking to receiving an immigration stamp.
- Travelling to Thailand: entry requirements checklist 2026A consolidated checklist of the main practical, documentary and procedural requirements for entering Thailand in 2026.