Tourist Visa in Thailand is a special type of non-immigrant visa that allows travelers to enter the country and stay for up to 90 days. This is granted to foreigners who are visiting Thailand for a variety of reasons. These reasons include personal enlightenment, sightseeing, recreation, shopping or meeting with family and friends.

A valid passport is required for all types of tourist visas in Thailand. The passport should be valid for at least six months from the date of entry into Thailand, and it should have a minimum of several spare blank pages.

In order to apply for a tourist visa, the applicant must fill in the required information on a visa application form and submit the required documents along with the required fees. These can be submitted by mail or in person to the Royal Thai embassy or consulate in the applicant's home country.

The visa process usually takes 5 to 10 business days and depends on the embassy or consulate where the application is lodged. The application fee can be paid either by cash, check or credit card.

Applicants must have a completed declaration form that states the duration of the trip, purpose of the visit, and the nature of the activities they are going to carry out in Thailand. Applicants must also provide proof of sufficient funds to cover their stay in Thailand. Financial evidence such as bank statements and a sponsorship letter with current balance not less than 200,000 Baht for the past 6 months should be presented.

Travelers should be vaccinated for yellow fever before entering Thailand. Those who have not been vaccinated are required to provide proof of having undergone an RT-PCR or Pro-ATK test at least 72 hours prior to departure from their home country. Airline staff and Immigration Officers will conduct random checks for this requirement when arriving in Thailand.

When applying for a tourist visa, the applicant should provide an invitation letter from a Thai family or friend accompanied by a copy of their passport. The letter should state the purpose of the visit, including dates and the name of the host family or friend.

It is possible to apply for a tourist visa through the eVisa service of the Royal Thai embassy in the applicant's home country. Those who have applied for a visa through the eVisa system will receive a confirmation email once their application has been approved. Upon arrival in Thailand, the eVisa number should be printed and shown to both the airline and Thai immigration officials for any necessary checks.

The application for a tourist visa should be made at least four weeks before the planned travel date. This is to ensure that the application is processed in time. If the application is submitted late, it can result in delays and additional fees. There are also agencies that can assist with the process of obtaining a tourist visa in Thailand.