I am just curious to know how you intend to request the extension with 30 days left on your non-O.
Thailand is very bureaucratic in each and every way and opening a bank account to deposit your money is already a challenge.
Easiest way: Book a hotel for three weeks or something. Ask the hotel for the TM30, then go to Immigration for a residence certificate for opening an account (not a permit). Finally go to a bank to open an account.
Expect this procedure to take anything between two days and two weeks.
Then deposit your money, find the place where you want to stay with your wife and start preparing for the visa extension.
During all that time two things are important:
1) Enjoy the time and enjoy what you’re doing. You’re in Thailand!
2) TIT! This Is Thailand. Everything works out differently than planned. Get used to it. Relax, stay calm and respectful. The people you’re dealing with can’t help it that their government didn’t give them sufficient training.
It’s not about incoming cash - It’s about generating more investments in Thailand rather than foreign.
So first they created tax ruling
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to impose better taxation on results from foreign investments. Then they figured the ruling had an adverse effect because investors would simply keep their money abroad rather than investing it in Thailand.
So now they relax the same ruling, but only for foreign investments, so it seems. Unfortunately leaving (some) expats like us in the middle.