Thai family and dependent visas: proving the relationship with translated civil records
In short
Family-based permission to stay in Thailand turns on documentary proof of the relationship: a marriage record, a birth record, or an adoption or guardianship record. Where those records were issued abroad they usually have to be legalised by the issuing country's embassy in Thailand and then by the Department of Consular Affairs, and translated in full. Where they were issued in Thailand, a freshly issued copy is normally requested. The visa is granted by an embassy or the e-Visa system; extensions of stay on family grounds are decided by the Immigration Bureau.
Who this applies to
- • Foreign spouses of Thai nationals or of foreign nationals working in Thailand.
- • Dependent children accompanying a parent who holds permission to stay.
- • Parents joining an adult child resident in Thailand, where the category allows it.
Documents to prepare
- • Marriage certificate and marriage register record, or the equivalent foreign record
- • Birth certificates establishing the parent-child relationship
- • Passports of every family member included in the application
- • House registration or residence evidence for the family in Thailand, where held
- • Adoption, guardianship or custody orders where the relationship rests on them
- • Full translations of every document not issued in Thai
Step by step
1. Identify which relationship the application rests on
Spouse, child and parent categories carry different evidence requirements. Confirm the category with the embassy or immigration office before assembling the file.
2. Obtain freshly issued civil records
Many offices decline records issued long before submission. Request a current copy from the issuing registry rather than reusing an old one.
3. Legalise foreign records before translating for Thai use
Foreign civil records are certified by the issuing country's embassy in Thailand, then legalised by the Department of Consular Affairs.
4. Translate the complete document
Registration numbers, endorsements and seals form part of the record and are reproduced in the translation, with names matching the passports.
5. Track the extension of stay separately
The initial visa and any later extension are separate decisions. Diarise the end date of the current permission to stay and start the extension early.
Points to watch
- • Submitting a marriage certificate without the register record where the office asks for both.
- • Different spellings of a child's name across the birth record, the passport and the parent's documents.
- • Photographs of bound household records where the inner margin text is lost.
- • Assuming a dependant's permission to stay renews automatically with the main applicant's.
Frequently asked questions
Does my foreign marriage certificate need to be registered in Thailand?
That depends on what you intend to use it for. Some purposes accept a legalised and translated foreign certificate; others expect the marriage to be recorded with a Thai district office. Confirm with the office that will receive the file.
Can one translation be reused for several applications?
Usually yes, provided the underlying record has not changed and the receiving office does not set its own recency limit for supporting documents.
Do children need their own documents?
Yes. Each child normally needs a passport and a birth record establishing the relationship, translated where it is not in Thai.
What if the relationship rests on a court order?
Adoption, custody and guardianship orders are translated in full, including the court's file numbers and endorsements, and are legalised where they were issued abroad.
Related pages
Official source
Content last reviewed: August 2026