Complete Guide to Thailand Formalities 2026: Visa, Entry and Essential Advice

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Are you preparing for your trip to Thailand? Here's everything you need to know about entry requirements: passport, visa, TDA, length of stay, and important rules.


 Passport – mandatory condition

  • Valid passport at least 6 months after the entry date
  • Minimum 1 blank page

 Possible refusal of boarding if non-compliant


  Exit permit

  • May be requested at boarding or on arrival
  • You must prove you are leaving Thailand

 Tip: Flexible or temporary ticket if you haven't planned yet


 Thailand Digital Arrival Card (TDA)

 What is it?

Le TDA Thailand Digital Arrival Card is a digital entry form that replaces the old paper form.

TDAC: the mandatory form before arriving in Thailand

From 2025, foreign travellers will need to complete the TDAC (Thailand Digital Arrival Card) before arriving in Thailand. This online form will gradually replace the old paper immigration cards. It is recommended to fill it out a few days before departure via the Official TDAC Guide to avoid any problems upon arrival.


 Is it mandatory?

  • Yes, for the majority of travellers
  • To be filled in before arriving in Thailand

 Information requested

  • Passport details
  • Flight number
  • Address in Thailand
  • Length of stay

 Tip: Do it 48 to 72 hours before your departure


 Thailand Visa – Length of Stay

 Visa exemption (most common case)

  • Stay permitted: 30 days
  • Valid in many European countries
  • Potential for expansion +30 days on site

 Tourist visa

  • Duration: 60 days
  • Extension possible : +30 days

 Ideal if you stay longer


Extension of stay

  • Things to do at an immigration office
  • Cost: approximately £900

 Overstay

  • Fine 500 THB per day
  • Can lead to sanctions (blacklist)

👉 Tip: never exceed


 On arrival in Thailand: formalities

Steps:

  1. Immigration control
  2. Stamp in the passport
  3. Baggage reclaim
  4. Customs

 To be presented if requested

  • Passport
  • Return ticket
  • Hotel booking

 Important rules to know

  • Do not work on a tourist visa
  • Observe the authorised duration
  • Always keep a copy of your passport.
  • Declare certain items if necessary

 Special cases

 Long stay

  • Specific visa required (long-term tourism, education, retirement...)

 Multiple entries

  • Possible with a suitable visa
  • Otherwise, exit = new entry

 Border crossing (visa run)

  • Allowed, but increasingly controlled

 To be avoided if used excessively


Practical advice

  • Do a Paper and digital copy of passport
  • To have a hotel address for arrival
  • To prepare your documents in advance
  • Check the rules before departure (they are changing)

A question about the formalities for Thailand?

Visa, TDAC, length of stay, passport, insurance or necessary documents: rules can change depending on your nationality and type of travel. If in doubt before you leave, do not hesitate to consult our page Contact to obtain practical information and advice to help you prepare for your arrival in Thailand more smoothly.


 FAQ – Thailand Formalities

Do you need a visa for Thailand?
Not for a short stay (30 days depending on nationality).

Is the TDA mandatory?
Yes, in the majority of cases.

Can one extend their stay?
Yes, 30 additional days.

What happens in case of exceeding the limit?
Fine and risks for future travel.

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