Brunei 
Thailand
Brunei passport holders do not need a visa to visit Thailand for stays of up to 30 days.
The Royal Thai Embassy says nationals of the 60 listed countries and territories are entitled to visa exemption for tourism for a stay of up to 30 days, which can be extended for another period of up to 30 days solely at the immigration officer's discretion.
“Nationals of the following 60 countries and territories are entitled to visa exemption for the purpose of tourism for up to 30 days period of stay and can be extended for another period not exceeding 30 days. Extension of stay is solely at the discretion of the immigration officer.”
Source: Royal Thai Embassy, Washington D.C. — New Visa Exemption and Visa on Arrival to Thailand (summary adapted from the Ministry of Foreign Affairs, effective 15 September 2026, information as of 31 August 2026) · checked 13 Oct 2026
Brunei citizens can enter Thailand without a visa and stay for up to 30 days. You only need a valid Brunei passport at the border; immigration officers may still ask for a return or onward ticket, proof of accommodation and enough money for your stay. The 30-day limit usually counts calendar days from your arrival, so book your return flight inside that window.
Whatever your visa status, Thailand applies the same entry conditions to every traveller:
Thailand lets 78 passports in without a visa, offers a visa on arrival to 3, issues eVisas to 117. Brunei citizens are treated the same way as Bahrain, Bhutan, Cambodia, China and Hong Kong. Overall the Brunei passport ranks #49 in the world with 103 visa-free destinations.
Planning a longer trip in Asia? With a Brunei passport you can also visit 20 countries in the region without a visa, including China, Hong Kong, Indonesia, Iran, Japan, Kyrgyzstan, Cambodia and Laos.
In the other direction, Thailand citizens can visit Brunei visa-free for up to 14 days.
Entry requirements for ThailandThe UK government tells British nationals that to enter Thailand the passport must have an expiry date at least 6 months after the date you arrive and at least 1 blank page.
UK Foreign, Commonwealth & Development Office — Thailand entry requirements✓ Checked 13 Oct 2026
Your passport needs at least 1 blank page.
UK Foreign, Commonwealth & Development Office — Thailand entry requirements✓ Checked 13 Oct 2026
The UK government says that to enter Thailand you must have a certificate to prove you have had a yellow fever vaccination if you are coming from a country listed as a transmission risk. WHO's country list gives the requirement for travellers aged 9 months or over arriving from countries with risk of yellow fever transmission, and for travellers having transited for more than 12 hours through an airport of such a country.
UK Foreign, Commonwealth & Development Office — Thailand entry requirements✓ Checked 13 Oct 2026
No official source we could read requires travel insurance of visa-exempt visitors or tourist-visa holders. The Royal Thai Embassy in Washington says certain types of visas (O-A and O-X) require the applicant to submit a Foreign Insurance Certificate.
Royal Thai Embassy, Washington D.C. — Common Questions / FAQs (Foreign Insurance Certificate)✓ Checked 13 Oct 2026
No official source we could read states that an onward or return ticket is required of every visitor. The UK government tells British nationals they may be asked to show evidence of onward or return travel, and that British nationals have been refused entry for failing to provide this evidence. The Tourism Authority of Thailand lists evidence of onward travel where required among the entry requirements that remain unchanged.
UK Foreign, Commonwealth & Development Office — Thailand entry requirements✓ Checked 13 Oct 2026
The Tourism Authority of Thailand says visitors may be asked to show sufficient funds or equivalent documents during immigration screening. The Royal Thai Embassy in Washington says travellers entering under the Tourist Visa Exemption Scheme must have at least 20,000 THB per person (40,000 THB per family). Under the Ministry of Interior announcement, as listed by the Tourism Authority of Thailand, the amounts are 10,000 THB per person (20,000 THB per family) on a visa on arrival or a transit visa, and 20,000 THB per person (40,000 THB per family) on a tourist or non-immigrant visa. Children under 12 are exempt.
Tourism Authority of Thailand — Thailand entry reminder on proof of funds for foreign visitors✓ Checked 13 Oct 2026
The Immigration Bureau says all passengers must complete the Thailand Digital Arrival Card, and that foreigners are required to submit their arrival card information 3 days in advance of their arrival date in Thailand. It is submitted at tdac.immigration.go.th.
Thai Immigration Bureau — Thailand Digital Arrival Card (TDAC) portal, titled "No Fees Required" (all passengers must complete it, 3 days in advance of arrival)✓ Checked 13 Oct 2026
Under Section 38 of the Immigration Act 1979, the host, the house owner, or the possessor of the dwelling or the hotel accepting foreigners permitted to stay temporarily in Thailand must notify the immigration office of the area within 24 hours from the time of the foreigner's stay. Where there is no immigration office nearby, the notification goes to the local police station. The owner, landlord or operator of the place reports on Form TM.30. One way to notify is via the internet.
Government Public Relations Department (thailand.go.th) — Rules for establishments on notification of foreigners’ residence (source: Immigration Office)✓ Checked 13 Oct 2026
An overstayer who surrenders at the immigration checkpoint before leaving Thailand pays a fine of 500 baht per day, at most 20,000 baht. A foreigner who surrenders after overstaying more than 90 days is barred from re-entering for 1 year from departure; more than 1 year, for 3 years; more than 3 years, for 5 years; more than 5 years, for 10 years. A foreigner who is caught overstaying is barred for 5 years if the overstay is under 1 year, and for 10 years if it is longer.
Royal Thai Government portal — The process of imposing a fine for foreign nationals who have overstayed the permitted period✓ Checked 13 Oct 2026
Thailand's Ministry of Finance requires anyone taking out of Thailand currency notes or coins worth more than 450,000 Baht, or foreign currency notes or coins worth more than US$15,000 or its equivalent, to declare them to a Customs Officer. No official source we could read states the threshold for declaring cash on arrival.
Bank of Thailand — Notification of the Ministry of Finance on Exchange Control (No. 6), 8 February 2017 (unofficial translation)✓ Checked 13 Oct 2026
Data: TravelRequirements.info — Entry Requirements Dataset, AXG Sp. z o.o. (CC BY 4.0). Entry rules can change — confirm with official sources before travel.
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