The Royal Bhutanese Embassy in Bangkok does not issue any visa or entry permit. Bhutanese visas are only issued by the Department of Immigration, Ministry of Home and Cultural Affairs in Bhutan. With the exception of visitors from India, all other visitors to Bhutan require visas to be approved prior to the visit. Nationals of Bangladesh and the Maldives are eligible for a visa on arrival at the port of entry.
Nationals of Switzerland and Thailand holding diplomatic and official passports are eligible for visa on arrival at the port of entry
Visitors to Bhutan can process their visa online from the website of the Department of Immigration and also engage with tourism service providers (www.bhutan.travel for more details) to process the travel documents and plan a trip. Department of Tourism (https://www.tourism.gov.bt/) also offers customer service to help answer questions regarding visa applications and questions about travel within the country.