Can I use a sponsor letter from my mother to prove financial proof for a DTV visa application in Thailand?

I can't tell you whether a sponsor letter works. But I asked my agent two questions close to yours, so this may still be useful.

I applied through the Royal Thai Embassy in Tokyo — filed 23 April 2026, approved 2 June. Before filing I asked whether I could count my wife's balance, and whether I could use securities instead of cash in a bank. The answer was no to both, and my agent was firm that the funds had to sit in the applicant's own bank account.

That is my agent's position. I could not find it written in what Tokyo publishes, so treat it as one experienced opinion rather than a rule — I would put the same question to your post in Indonesia before you pay anything.

What Tokyo did accept from me: three months of statements in my own name, 2,500,000 yen (about US$15,500) sitting in a Japanese account, untouched. No baht, no Thai account. And the money was never what held me up — they rejected my application photo twice, and that is what cost me the days.

Bon chance!

I just DM'ed you.

You need to have 500k in your account under your name for more than 3 months. Good luck

Look into this Acme MTC Guild

If you do not have the money

How do you plan to come to Thailand

Not gonna work!

Not possible sorry

Your mother would need to apply as the main applicant and then you as her dependent. I think you must be 16 or younger though for the sponsor letter to work

You don't meet the requirements

Sorry but the money must be in your account. They are clear about that. Dont waste your money applying