What it is
Non-Immigrant O, granted against a proven family tieOFFICIAL . single entry, valid 90 days, with a stay of up to 90 daysOFFICIAL , which is the entry, not the residence. the year is granted inside Thailand by the Immigration Bureau, not by the consulateOFFICIAL .
we confirm the family tie and the relative's current Thai status before anyone starts collecting money papersOUR TAKE That is our own sequencing rule. It exists because a perfect financial pack is worthless when the underlying status has quietly expired.
Which tie you file on
spouses, parents and children of Thai nationals, and dependants of foreigners with legal status in ThailandOFFICIAL The ground you pick decides the document set, so name it before you start collecting anything.
Married to a Thai national. The pack turns on the marriage certificate, your spouse's Thai ID and the house registration, with names matching across all three.
Parent of a Thai child. Here the birth certificate carries the case, plus the child's Thai documents, and evidence of custody or acknowledged parentage where the situation calls for it.
Spouse or child of a foreigner who holds valid status in Thailand. Two things get checked: your relationship, and that the main family member's visa or extension is genuinely current.
Documents and legalisation
The core is the marriage, birth or adoption certificate, plus the Thai relative's ID and house registrationOFFICIAL .
certificates issued outside Thailand usually need translation and legalisation before a post will look at themPRACTICE
Money
Posts set their own bar. At the London embassy it reads 40,000 THB a month in income, or 400,000 THB sitting in the accountOFFICIAL for family of a Thai national, and 30,000 THB for dependants of a foreigner working in ThailandOFFICIAL for dependants of a foreigner working in Thailand.
That is London's number, checked on London's page. Other posts publish their own, so read the page of the post you will actually use before you move any money.
Getting to the year
The consulate hands you the entry. The year is an Immigration decision inside Thailand, counted from your first entry, against that office's own criteria and its own financial evidence.
We are not printing an amount for the marriage extension here. The criteria sit in an Immigration Bureau handbook we have not been able to pull the wording from yet, and the figures circulating on forums do not agree with each other. Ask your office directly, and treat anything unsourced as unconfirmed until we publish it with a link.
Where cases fall apart
- The marriage was never registered, so there is no document to file on.
- Names do not match across the passport, the certificate and the Thai documents.
- Translation or legalisation missing for a country that requires it.
- The foreign family member's own status has lapsed, taking the dependant case with it.
- Parentage or custody assumed rather than evidenced.
- Financial evidence built for the wrong post.
Questions people actually ask
01 Does an unregistered marriage count
No. The tie has to be documented, which for a marriage means registered and certified. Living together for years, however genuinely, is not a document a consulate can act on.
02 My certificate is not in English or Thai
Then it usually needs translation, and often legalisation on top. What exactly is required depends on the country that issued it and the post you are filing at, so check that pair before you pay a translator.
03 Can I bring my children on the same basis
Children of a Thai national, and children of a foreigner with valid status in Thailand, both have a route here. Each person is a separate application with its own documents and its own fee.
04 How do I turn 90 days into a year
You do not do it at the consulate. The year is granted inside Thailand by Immigration, counted from your first entry, and their criteria are their own. Ask your office what it wants while you still have weeks, not days.