Clause 2.11(5) of Immigration Bureau Order 327/2557 requires that, in the case of parents, funds of no less than 500,000 THB are deposited in a bank in Thailand under the father's or the mother's name. For the first year, the clause asks for the amount maintained for no less than 30 days before the filing date. A longer holding period is widely quoted for renewals; we could not read that part of the official text cleanly, so treat the renewal period as a question for your Immigration office rather than a settled figure.
This order governs an extension of stay decided inside Thailand by Immigration, not an initial visa application handled by an embassy or consulate. We have not verified a generally applicable financial threshold for the initial visa application abroad. Check the requirements published by your handling embassy or consulate.
Whatever the renewal period turns out to be at your office, the direction of travel is the part people miss. The first application is the lighter one. Families who move the money out after approval, then move it back shortly before the next renewal, run into exactly the problem the clause is designed to catch.
Practical example
A family arriving for the August school year
- Child
- Enrolled, Year 5, international school
- Parent applying
- Mother, as guardian
- Deposit
- 500,000 THB, her own account
- Funded by
- Early July
- First application
- Mid-August
- Next renewal
- Balance untouched throughout
The deposit is funded a comfortable six weeks before filing, which clears the 30-day requirement without depending on a transfer landing on time. Because the balance is never drawn down, the three-month condition at the first renewal takes care of itself.