The requirements for Thailand Tourist visa are as follows:
1. Passport or travel document with validity more than 6 months;
2. Visa application form completely filled out;
3. Recent( 4 x 6 cm.) photograph of the applicant;
4. Evidence of travel from Thailand (air ticket paid in full)
5. Evidence of adequate finance (10,000 Baht per person and 20,000 Baht per family)
You may required additional documents by visa officers if necessary.
Time required to issue visa is 2 days if submitted in person.