Thailand Visa and Entry Requirements

Start with whose rule this is.

The description below is the UK Foreign, Commonwealth and Development Office's account of the rules Thailand applies, and the FCDO writes for people traveling on a full British citizen passport. What Thailand requires of you depends on the passport you hold, so treat the shape of the requirement as the useful part and confirm the detail against the authority for your own nationality before you book. Nothing on this page is a substitute for that check.

The digital arrival card applies to everyone, by every route.

The FCDO states that from 1 May 2025, all foreign nationals entering Thailand, whether by air, land or sea, must complete a digital arrival card online before arrival, and that it can be registered within 3 days before arriving.

Two things follow. The card is not an airport formality that only flyers meet: a land border crossing from a neighboring country and an arrival by sea are both covered. And the registration window is short, so it belongs on the packing checklist rather than on the booking one. The packing list puts it there.

Thirty days, for tourism, since 15 September 2026.

The source states that from 15 September 2026, a traveler entering under the visa exemption scheme can stay for up to 30 days for tourism only. It adds that visa-exempt entry does not cover business travel, including attending conferences, meetings or other business activities, and that anyone traveling for business should obtain the appropriate visa in advance.

That date is worth noticing. A great deal of guidance published before this month describes a longer allowance, and it is the kind of detail that is copied forward for years. If a source you are reading gives a different number, check when it was written.

The same page notes that anyone planning to work, study, retire or live in Thailand must get the appropriate visa before traveling. Those are different categories from a tourist visit and they are not covered here.

Passport validity, funds, and onward travel.

The FCDO states that a passport must have an expiry date at least 6 months after the date of arrival, and at least 1 blank page. Six months is measured from arrival rather than from departure, which is the direction people most often get backwards.

It also records that a traveler may be asked to show funds of at least 10,000 Thai baht per person, or 20,000 per family, together with evidence of onward or return travel, and that British nationals have been refused entry for failing to provide that evidence. It is not a formality that is always asked for, and it is one that is sometimes asked for. Carrying the evidence costs nothing.

Overstaying is expensive and the consequences are not only financial.

The source sets out a fine of 500 Thai baht a day, up to a maximum of 20,000 baht. Beyond the fine it describes being held in detention, deported at your own expense, and banned from re-entering Thailand for up to 10 years, and it says plainly that conditions in detention centers can be harsh.

That is the reason the 30-day figure above is worth treating as a hard edge rather than a guideline, and the reason a trip that might run longer is a conversation to have before you travel rather than after you arrive.

What this page cannot tell you.

Thailand's own immigration and e-Visa services could not be cited here. Their public sites return either a navigation shell with no readable content or an outright refusal to this environment, so nothing on this page is quoted from them and no fee, form or processing time is given. Where you need those, go to the Thai authority directly or to the embassy or consulate that serves you, and treat this page as the shape of the requirement rather than its detail.

Sources

• UK Foreign, Commonwealth and Development Office: the Thailand entry requirements page, which describes the rules Thailand applies and writes them for people traveling on a full British citizen passport, so the framing is the British position rather than a general one: that a passport must have an expiry date at least 6 months after the date of arrival and at least 1 blank page; that from 1 May 2025 all foreign nationals entering Thailand, whether by air, land or sea, must complete a digital arrival card online before arrival, and that it can be registered within 3 days before arrival; that from 15 September 2026 entry under the visa exemption scheme allows a stay of up to 30 days for tourism only, and that visa-exempt entry does not cover business travel including conferences and meetings; that a traveler may be asked to show funds of at least 10,000 Thai baht per person or 20,000 per family together with evidence of onward or return travel, and that British nationals have been refused entry for failing to provide it; and that overstaying carries a fine of 500 Thai baht a day up to a maximum of 20,000 baht, with detention, deportation at the traveler own expense and a ban from re-entering Thailand for up to 10 years, adding that conditions in detention centers can be harsh. Accessed 22 September 2026.
• UK Foreign, Commonwealth and Development Office: the Thailand travel advice landing page: that no travel can be guaranteed safe, and that anyone who chooses to travel should research their destination and get appropriate travel insurance. Accessed 22 September 2026.