How can I open a personal bank account in Thailand for a Non-O visa requirement?

Go to a bank and open an account in your name. There is nothing in thai banking laws that prohibits you from opening an account on a 30 day visa exempt entry or a tourist visa stamp.

You just have to try a few bank branches before you will find one that will do it. Some will say no, but I doubt you'd have to try more than 3 or 4 branches before you could find one that would let you open an account in your name.

First off you can't get a year-long, multi-entry Non-Immigrant Type O visa INSIDE thailand :/

You COULD get a 90 day single entry Non-O based on marraige to a thai inside the country at the immigration office

BUT

if you are using banked money for proof of funds and you have a joint account you would need DOUBLE the amount in the account to use it.

That means you'd need 800K baht in a joint savings account (half is yours and half is your wifes).

I'd say get a 90 day single entry Non-O visa from a thai consulate in another country (like Vientiane or Savannakhet Laos, OR Ho Chi Minh City Vietnam.

Then enter thailand, get stamped in for 90 days go to the bank, open an account and put the 400K baht in it. That way you will have the money 'seasoned' the required 2 months when you go to apply for your yearly extension before the 90 day stamp runs out.

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