US and UK citizens can visit Thailand without a visa for tourism, but the permitted stay is quoted differently by the two governments. The UK FCDO (updated 12 October 2026) says visa-exempt entry allows up to 30 days for tourism only from 15 September 2026. The U.S. State Department page (last updated August 20, 2026) still says fewer than 60 days. Everyone must complete the Thailand Digital Arrival Card (TDAC) online within the three days before arrival, and your passport should be valid for six months.
This guide is based on the UK FCDO (GOV.UK, updated 12 October 2026) and the U.S. Department of State (travel.state.gov, last updated August 20, 2026), checked 12 November 2026. Both governments warn that Thai entry rules change; confirm with the Royal Thai Embassy before every trip. We could not read the Thai e-visa and arrival-card sites themselves (their pages did not load in our checks), so fees and processing times for visas are not quoted here.
Safety: the U.S. Department of State advisory for Thailand is Level 1, « Exercise Normal Precautions », with some areas at increased risk (State Department advisory feed, checked 12 November 2026). See the FCDO travel advice too.
Thailand entry at a glance
- UK citizens: visa-exempt entry for tourism only, up to 30 days from 15 September 2026 (FCDO).
- US citizens: the State Department page says tourists staying fewer than 60 days do not need a visa, with pre-arrival online registration (page last updated August 20, 2026, before the 15 September change). Check the Royal Thai Embassy for the current limit.
- Passport valid at least six months after arrival with at least one blank page (FCDO); the State Department strongly recommends six months beyond arrival.
- Thailand Digital Arrival Card (TDAC): compulsory online form for all foreign nationals, within 3 days before arrival (FCDO).
- Funds: officials may ask for proof of at least 10,000 baht per person or 20,000 baht per family, and onward or return travel (FCDO).
- Land-border visa-exempt entries are normally limited to 2 per calendar year; this does not generally apply to arrivals by air (FCDO).
Do US and UK citizens need a visa for Thailand?
US citizens
According to the U.S. Department of State (travel.state.gov, last updated August 20, 2026), US citizen tourists entering Thailand for fewer than 60 days do not require a visa, but pre-arrival online registration is required. The State Department strongly recommends a passport valid for at least six months beyond your arrival date, and warns that Thai immigration officials or airline staff may ask for your onward or return ticket or proof of financial ability to stay. Business travellers, teachers, retirees and those planning to stay longer than 60 days should check visa requirements with the Royal Thai Embassy. The State Department recommends carrying a digital or physical copy of your passport identification page and your current Thai visa. Some HIV/AIDS entry restrictions exist; verify with the Royal Thai Embassy.
UK citizens
According to the FCDO (GOV.UK, updated 12 October 2026), from 15 September 2026 visa-exempt entry allows a stay of up to 30 days, for tourism only. It does not cover business travel, including conferences or meetings. If you entered before 15 September 2026, you will usually be allowed to stay for the period granted on arrival. To stay longer you must get the appropriate visa before travelling or, if eligible, apply for an extension with the Thai immigration authorities. Your passport must have an expiry date at least six months after the date you arrive and at least one blank page. Visa-exempt entry for tourism through land-border checkpoints is normally limited to two entries per calendar year, which does not generally apply to arrivals by air; frequent visitors may be asked for evidence of onward travel, accommodation or funds and can be refused entry.
The sources disagree on the length of stay (30 days from the FCDO, 60 days on the older State Department page). The FCDO page is more recent and reflects the 15 September 2026 change, but US citizens should confirm the current visa-exempt period with the Royal Thai Embassy in Washington before travelling.
| Your plan | What you need |
|---|---|
| Holiday of 30 days or fewer | No visa; passport and the TDAC |
| Holiday longer than 30 days | Check the current rules: obtain the appropriate visa before travelling, or an extension from Thai immigration if eligible (FCDO) |
| Work, study, retirement or living in Thailand | The appropriate visa before you travel (FCDO) |
| Business activities, conferences, meetings | A visa; visa-exempt entry does not cover business (FCDO) |
Funds, onward travel and overstays
- Funds and tickets: you may be asked to show you have enough money for your stay (at least 10,000 baht per person or 20,000 baht per family) and evidence of onward or return travel. British nationals have been refused entry for failing to provide this (FCDO).
- Overstays: the FCDO says the fine is 500 baht a day up to a maximum of 20,000 baht, and you risk detention, deportation at your own expense and a ban of up to 10 years.
- Dual nationals: it is best to leave Thailand on the same passport you used to enter (FCDO).
- Yellow fever: a certificate is required if you arrive from a country listed as a transmission risk (FCDO).
The TDAC: compulsory digital arrival card
According to the FCDO, since 1 May 2025 all foreign nationals entering Thailand, by air, land or sea, must complete a digital arrival card online before arrival, and can register within the 3 days before they arrive. The State Department also mentions pre-arrival online registration. Use the official Thai immigration site (tdac.immigration.go.th) or the link given by the Royal Thai Embassy, and be wary of third-party sites that charge for the service.
Staying longer: visas and extensions
For stays longer than the visa-exempt period, for work, study, retirement or any purpose other than tourism, both governments direct you to the Royal Thai Embassy and the Thai immigration authorities. The FCDO says to obtain the appropriate visa before you travel. Visa types, fees and processing times are set by the Thai authorities and change often, so check the official Thai e-Visa website or your nearest Royal Thai Embassy. For a trip that continues next door, our Vietnam visa guide explains the exemption and e-visa.
Once the paperwork is done, see our Thailand guide, when to go to Thailand and the guides to Bangkok, Chiang Mai and Phuket. Still choosing? Read Thailand or Vietnam. For local time, see the time difference with Thailand.
Frequently asked questions
How long can I stay in Thailand without a visa?
The FCDO says British citizens can stay up to 30 days for tourism from 15 September 2026. The State Department page (updated August 20, 2026) says US tourists staying fewer than 60 days need no visa; confirm the current limit with the Royal Thai Embassy.
Do I need to fill in the TDAC?
Yes. According to the FCDO, all foreign nationals entering Thailand by air, land or sea must complete the digital arrival card online, within the 3 days before arrival.
How long must my passport be valid for Thailand?
At least six months after the date you arrive, with at least one blank page (FCDO). The State Department strongly recommends six months beyond arrival.
Can I enter Thailand by land without a visa?
Yes for tourism, but the FCDO says visa-exempt entry through land-border checkpoints is normally limited to two entries per calendar year; this does not generally apply to arrivals by air.
How much money do I need to show?
Officials may ask for proof of at least 10,000 baht per person or 20,000 baht per family, and evidence of onward or return travel (FCDO).
What happens if I overstay in Thailand?
A fine of 500 baht a day up to 20,000 baht, and a risk of detention, deportation at your own expense and a re-entry ban of up to 10 years (FCDO).
Our sources
- UK FCDO, Thailand travel advice: entry requirements (GOV.UK, updated 12 October 2026), checked 12 November 2026.
- U.S. Department of State, Thailand: International Travel Country Information (last updated August 20, 2026), checked 12 November 2026.
- Our methodology
Updated November 2026.