Foreigners entering Thailand must proceed with the correct type of visa to stay in Thailand, as each type of visa grants a different length of stay, and, when it has expired, foreigners must depart Thailand. However, if they wish to extend their stay, the application must be made on a case-by-case basis, such as applying to stay in Thailand in the case of visiting a spouse or child who is a Thai national, with the requirements as follows:
1. Proof of relationship;
2. In the case of a spouse, they must have a legal and de facto relationship; or
3. In the case of a child, adopted child, or spouse's child requesting patronage of such child, adopted child, or spouse's child, they must not be married, must live as part of that household, and must not be over 20 years of age.
Required documents
1. TM.7 form;
2. Copy of the applicant's passport;
3. Copy of house registration;
4. Copy of the national ID card of a Thai national;
5. Copy of marriage certificate or a copy of the birth certificate.
Information as of 8 February 2023
Source: Immigration Office
Tel. 1178 or +66 2572 8500
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