Dependent Visa — Non-Immigrant O (Spouse / Child of a Visa Holder)วีซ่าผู้ติดตาม (Non-Immigrant O)

A Non-Immigrant O (Dependent) visa for the spouse and children of a foreigner who holds a qualifying Thai visa (most often a Non-B work-permit holder). It lets the family stay tied to the primary applicant’s permission of stay. Distinct from the marriage-to-a-Thai-national route, where the sponsor is a Thai citizen.

Duration

Initial single-entry Non-O is 90 days from issuance. In-country, the dependant extends in line with the sponsor’s permitted stay, up to 1 year per extension.

Extensions

Extended in-country before expiry (typically 30 days in advance), granted in line with the sponsor’s permitted stay.

Financial requirement

For employment-based dependants the requirement attaches mainly to the primary (Non-B) holder’s salary/work permit. For the dependant’s own extension, offices commonly look for 400,000 THB in a Thai bank (held ~2 months), OR 40,000 THB/month, OR a combination totalling 400,000 THB/year — office-dependent; confirm with the relevant immigration office (as of 2026-05-24).

Fees

Embassy visa fees are set in local currency per post. In-country extension of stay: 1,900 THB. THB-equivalent embassy fee (~2,000 single / ~5,000 multiple) varies by post — confirm with the specific embassy.

Processing time

Embassy: several working days, varies by post. In-country extension: varies by office, commonly issued in line with the sponsor’s stay (sometimes after an “under consideration” period).

Who it’s for

• The non-Thai spouse of a foreigner working/living in Thailand on a primary visa (e.g. Non-B + work permit)
• Children (including step-children) of that primary visa holder, generally under 20
• Note: dependants of LTR holders are handled under the LTR programme itself, not this route

Key documents

• Visa application form + photo; passport (6+ months) + copies
• Proof of relationship: marriage certificate (spouse) / birth certificate (child), translated and legalised if foreign-issued
• Copy of the primary holder’s passport, visa, work permit (if applicable) and income evidence
• Financial evidence per the thresholds above
• House registration / proof of address; TM.30 on arrival

Staying compliant

• 90-day reporting (TM.47) throughout the stay; 2,000 THB fine if late
• TM.30 address notification
• Re-entry permit (1,000 THB single / 3,800 THB multiple) before departure to preserve the extension
• The dependant’s status is tied to the primary holder — if the primary visa ends, the dependant’s permission generally ends too
• A dependant who wants to work needs their own work permit + appropriate visa

Common pitfalls

• Child has reached/exceeded 20 (no longer eligible as a dependant)
• Primary holder’s visa/work permit lapses, collapsing the dependant’s status
• Relationship documents not translated/legalised
• Assuming the dependent visa grants work rights (it does not)
• Office-by-office variation in the financial test — confirm before applying