That's a question for your immigration office. Some will require it to be in a single transfer, and some will allow multiple transfers to meet the requirement. You need to ask your immigration office.

@Dennis *********

They were already living in Thailand and decided to get a DTV while already in the region.

SunnyPhoenix2325 You apply when the money has been in your bank account long enough. You apply at an immigration office. It's called an extension, not a new visa from an embassy outside of Thailand.

@Dany *******

They would need to go stay somewhere else long enough to get a residence certificate.

@Hans ************

I've run every red light I've come to for 30 years. I've never been stopped by police so it's legal

There is no new entry rule. There have always been 3 requirements to enter Thailand as a tourist:

1) Proof of funds - 20,000 baht or equivalent in another major currency, IN CASH ONLY

2) Proof of onward travel - a ticket out of Thailand within the number of days you will be stamped into Thailand for

3) Proof of lodging - a hotel or other booking for your first few days

It's rare to be asked for any of these, but if you are asked and cannot show it, they can deny you entry.

You'll receive an "under consideration" stamp. How long that lasts will vary by immigration office. It can be anywhere from 3 weeks up to 2 months.

An extension is not any entry. You're already in Thailand. You don't need to enter Thailand.

If you want to leave during your extension, then you need to purchase a re-entry permit to keep your extension alive when you go.

The bank will want to see your non-O entry stamp in your passport.

There's no embassy to visit inside of Thailand, that wouldn't make sense.

You can get one extension each entry, in theory. But immigration doesn't want anything to do with the DTV so they purposely make it so difficult you won't want to do it. Just leave and return every 180 days.

Each bank branch manager sets the requirements for their own bank branch. So you'll need to keep trying other branches until you find one that will do it. A yellow book should not be a requirement as it's not possible for everyone to get one.

You said you got a TM30 but that doesn't do anything for a bank account. Have you gotten a residence certificate from immigration that specifically says it's for opening a bank account?