Non-Immigrant O (Marriage to a Thai National)

The Non-Immigrant "O" marriage visa lets the foreign spouse of a Thai national live in Thailand (work allowed only with a separate work permit). It requires a legally registered marriage and, for the annual extension of stay, either THB 400,000 held in a Thai bank account or a THB 40,000/month income. Granted as a 90-day entry then extended one year at a time. (Figures are consistently reported by Thai immigration specialists; the official MFA page was unavailable at the time of writing — treat the source as a reputable secondary specialist, not the primary authority.)