Thailand entry requirements explained

By the Viamo editorial team · Editor Terje Moy · Last updated July 2026 · 6 min read

For most Western passport holders, getting into Thailand is simple: arrive, show your passport, and you're in for a set number of weeks without applying for anything in advance. The detail that trips people up is everything around that basic fact — how long you actually get, the digital arrival card you now need to complete, what "proof of funds" really means in practice, and how to extend once you're already there. This guide works through the practical mechanics rather than just the headline exemption.

How long you actually get, by entry method

Citizens of many countries — including the UK, most EU and EEA states, the US, Canada and Australia among many others — can currently enter Thailand visa-free for tourism, with the exemption period commonly running to 60 days for air arrivals, following an extension from the previous 30-day standard. Land border crossings have historically carried a shorter allowance than air arrivals for the same nationality, so don't assume the two are interchangeable if part of your trip involves crossing overland from Cambodia, Laos or Malaysia. The exact figure for your passport and entry method should be confirmed directly before travel, since Thailand has changed this more than once in recent years and a remembered figure from a previous trip is not a safe assumption. Our general guide to checking whether you need a visa covers the right method for verifying details like this using official sources.

The TDAC: Thailand's digital arrival card

Thailand now requires arriving travellers to complete a Thailand Digital Arrival Card (TDAC) online before entry, replacing the old paper arrival/departure card for most routes. It asks for standard information — passport details, flight or transport details, accommodation address in Thailand, and health-related questions — and is normally completed within a set window before arrival (commonly a few days ahead, rather than months in advance). Complete it using the official government portal only; as with most digital travel authorisations, unofficial sites that mimic the real form and charge extra fees have appeared, and using one adds cost without adding any actual benefit.

Keep a copy of your submitted TDAC accessible on arrival — a confirmation email or screenshot is generally sufficient — since immigration officers may ask to see it alongside your passport.

Proof of funds and onward travel — what's actually checked

Thai immigration rules have long referenced a notional minimum of funds per traveller (historically discussed as being in the region of 10,000 baht per person, or more for families), but in practice this is rarely demanded of typical short-stay tourists arriving by air with a return ticket and a hotel booking. It becomes more relevant — and more likely to be actually checked — for travellers who look like they might be planning to stay or work rather than visit, or at land borders, where scrutiny has tended to be somewhat closer. Carrying a bank card, a modest amount of cash, and being able to show a return or onward ticket if asked covers the great majority of cases. See our general guide to proof of onward travel for how this kind of check typically works in practice, including who actually asks for it (airline check-in staff, more often than border officers).

A confirmed onward or return ticket is the one document worth having ready regardless of your nationality's exemption length — travellers who arrive without one, particularly at land borders, have occasionally been refused entry or asked to buy an onward ticket on the spot.

Extending your stay from inside Thailand

If your visa-exempt period isn't quite long enough, a single extension is available at a local immigration office inside Thailand, typically adding around 30 days to a tourist stay for a fee, paid in person. The process generally involves:

1. Visiting an immigration office (Bangkok's main office and provincial offices across the country all handle this) before your current permitted stay expires — not after.
2. Bringing your passport, a passport photo, a completed application form (available at the office) and the extension fee.
3. Waiting — processing is often same-day at quieter provincial offices, but can take longer at busy locations like Bangkok's main immigration office, so don't leave this until your last available day.

This is a one-time extension for most visa-exempt stays — it doesn't reset repeatedly, and immigration officers are alert to travellers who appear to be using back-to-back extensions and short exits to effectively live in Thailand on a tourist basis. If you need longer than an exemption plus one extension allows, a proper visa arranged in advance is the more reliable route. See our guide to what happens if you overstay for what's at stake if the timing goes wrong.

Visa on arrival and full tourist visas

Travellers whose nationality isn't covered by the exemption can generally apply for a visa on arrival at major airports and some land crossings, usually granting a shorter stay than the standard exemption and requiring a fee paid in local currency. For longer trips, or where visa on arrival isn't available for your nationality, a tourist visa (TR) arranged in advance through a Thai embassy or consulate typically allows a longer single-entry stay and can itself be extended once inside the country. See our companion guide to Thailand entry requirements for the fuller picture across all these categories, including the e-visa system now used for many applications.

Land borders: a different picture

Entry by land — from Cambodia, Laos, Myanmar or Malaysia — has historically come with tighter conditions than arriving by air: shorter exemption periods for some nationalities, and in some periods, limits on how many visa-exempt land entries you can make within a year. "Border runs" — leaving and immediately re-entering purely to reset the exemption clock — have become considerably harder to rely on, with officers at busy land crossings increasingly likely to question or refuse entry to travellers with a pattern of frequent short exits and re-entries. If your plans genuinely require more time in the region, structure them around a real visa rather than a border run. Travellers moving overland through the country afterwards can find the practical route and transport detail in our Thailand overland guide and the wider South-East Asia overland guide.

Frequently asked questions

How do I complete the TDAC and when should I do it?

Complete it online through the official Thai government portal, within the window specified before your arrival (commonly a few days ahead — check the current requirement, as this has been adjusted before). Save the confirmation, since immigration may ask to see it alongside your passport.

Can I extend my visa-exempt stay more than once?

Generally no — the standard extension for a visa-exempt tourist stay is a single extension of around 30 days, applied for at a Thai immigration office before your current stay expires. Repeated extensions or exits-and-re-entries used to string together a long stay are increasingly likely to draw scrutiny.

Do I really need to show proof of funds to enter Thailand?

It's rarely demanded of typical tourists arriving with a return ticket and accommodation booked, but the rule technically exists and can be checked, particularly at land borders. Having a bank card and some cash accessible, plus a booked onward ticket, covers most situations.

Is the visa-exempt period the same whether I arrive by air or by land?

Not necessarily — land border arrivals have historically been granted a shorter stay than air arrivals for the same nationality. Confirm the current figure for your specific entry point before relying on it, especially if your trip crosses into Thailand overland from a neighbouring country.