@Roberto *******
You will need more then 2K THB for an in-country Non-O visa based on marriage. Expect the following:
1. The applicant’s passport and a copy of:
a. The data “picture” page.
b. The most recent visa (if applicable).
c. The most recent entry stamp or extension of stay (if applicable).
d. The departure card (“TM 6”) stapled in the passport.
2. If entered on a tourist visa, a TM 86 visa change request form, and if entered on a visa on arrival, visa exempt, or bilateral agreement, a TM 87 visa change request form.
3. A copy of the submitted Notification of Residence of Foreigners form ("TM 30”).
4. A marriage certificate with a certified translation by the Ministry of Foreign Affairs, if the certificate was not issued in Thailand.
5. A front and back copy of the Thai spouse ID card, the original and copy of the Thai house book, and an updated Kor Ror 2 showing the marriage is still current, acquired from the local amphur office.
6. For male foreigners married to a Thai female only: Financial requirements must be met. These requirements are:
- 400,000 THB in a Thai bank account OR;
- 40,000 THB in income OR;
- A letter from the embassy saying the applicant has a monthly income of 40,000 THB or more a month. If the embassy offers the income letter, the income method can not be used.
Female foreigners married to Thai males do not need to show income or proof of savings.
7. Photographs of the applicant and the spouse outside the home with the house number visible, and throughout the home.
8. 2x passport sized (4cm by 6cm) photos.
9. A processing fee of 2,000 THB.